2020/05/26 - Amazon ElastiCache - 37 updated api methods
Changes Amazon ElastiCache now allows you to use resource based policies to manage access to operations performed on ElastiCache resources. Also, Amazon ElastiCache now exposes ARN (Amazon Resource Names) for ElastiCache resources such as Cache Clusters and Parameter Groups. ARNs can be used to apply IAM policies to ElastiCache resources.
{'CacheSecurityGroup': {'ARN': 'string'}}
Allows network ingress to a cache security group. Applications using ElastiCache must be running on Amazon EC2, and Amazon EC2 security groups are used as the authorization mechanism.
Note
You cannot authorize ingress from an Amazon EC2 security group in one region to an ElastiCache cluster in another region.
See also: AWS API Documentation
Request Syntax
client.authorize_cache_security_group_ingress(
CacheSecurityGroupName='string',
EC2SecurityGroupName='string',
EC2SecurityGroupOwnerId='string'
)
string
[REQUIRED]
The cache security group that allows network ingress.
string
[REQUIRED]
The Amazon EC2 security group to be authorized for ingress to the cache security group.
string
[REQUIRED]
The AWS account number of the Amazon EC2 security group owner. Note that this is not the same thing as an AWS access key ID - you must provide a valid AWS account number for this parameter.
dict
Response Syntax
{
'CacheSecurityGroup': {
'OwnerId': 'string',
'CacheSecurityGroupName': 'string',
'Description': 'string',
'EC2SecurityGroups': [
{
'Status': 'string',
'EC2SecurityGroupName': 'string',
'EC2SecurityGroupOwnerId': 'string'
},
],
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheSecurityGroup (dict) --
Represents the output of one of the following operations:
AuthorizeCacheSecurityGroupIngress
CreateCacheSecurityGroup
RevokeCacheSecurityGroupIngress
OwnerId (string) --
The AWS account ID of the cache security group owner.
CacheSecurityGroupName (string) --
The name of the cache security group.
Description (string) --
The description of the cache security group.
EC2SecurityGroups (list) --
A list of Amazon EC2 security groups that are associated with this cache security group.
(dict) --
Provides ownership and status information for an Amazon EC2 security group.
Status (string) --
The status of the Amazon EC2 security group.
EC2SecurityGroupName (string) --
The name of the Amazon EC2 security group.
EC2SecurityGroupOwnerId (string) --
The AWS account ID of the Amazon EC2 security group owner.
ARN (string) --
The ARN (Amazon Resource Name) of the cache security group.
{'ReplicationGroup': {'ARN': 'string'}}
Complete the migration of data.
See also: AWS API Documentation
Request Syntax
client.complete_migration(
ReplicationGroupId='string',
Force=True|False
)
string
[REQUIRED]
The ID of the replication group to which data is being migrated.
boolean
Forces the migration to stop without ensuring that data is in sync. It is recommended to use this option only to abort the migration and not recommended when application wants to continue migration to ElastiCache.
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'Snapshot': {'ARN': 'string'}}
Makes a copy of an existing snapshot.
Note
This operation is valid for Redis only.
Warning
Users or groups that have permissions to use the CopySnapshot operation can create their own Amazon S3 buckets and copy snapshots to it. To control access to your snapshots, use an IAM policy to control who has the ability to use the CopySnapshot operation. For more information about using IAM to control the use of ElastiCache operations, see Exporting Snapshots and Authentication & Access Control .
You could receive the following error messages.
Error Messages
Error Message: The S3 bucket %s is outside of the region. Solution: Create an Amazon S3 bucket in the same region as your snapshot. For more information, see Step 1: Create an Amazon S3 Bucket in the ElastiCache User Guide.
Error Message: The S3 bucket %s does not exist. Solution: Create an Amazon S3 bucket in the same region as your snapshot. For more information, see Step 1: Create an Amazon S3 Bucket in the ElastiCache User Guide.
Error Message: The S3 bucket %s is not owned by the authenticated user. Solution: Create an Amazon S3 bucket in the same region as your snapshot. For more information, see Step 1: Create an Amazon S3 Bucket in the ElastiCache User Guide.
Error Message: The authenticated user does not have sufficient permissions to perform the desired activity. Solution: Contact your system administrator to get the needed permissions.
Error Message: The S3 bucket %s already contains an object with key %s. Solution: Give the TargetSnapshotName a new and unique value. If exporting a snapshot, you could alternatively create a new Amazon S3 bucket and use this same value for TargetSnapshotName .
Error Message: ElastiCache has not been granted READ permissions %s on the S3 Bucket. Solution: Add List and Read permissions on the bucket. For more information, see Step 2: Grant ElastiCache Access to Your Amazon S3 Bucket in the ElastiCache User Guide.
Error Message: ElastiCache has not been granted WRITE permissions %s on the S3 Bucket. Solution: Add Upload/Delete permissions on the bucket. For more information, see Step 2: Grant ElastiCache Access to Your Amazon S3 Bucket in the ElastiCache User Guide.
Error Message: ElastiCache has not been granted READ_ACP permissions %s on the S3 Bucket. Solution: Add View Permissions on the bucket. For more information, see Step 2: Grant ElastiCache Access to Your Amazon S3 Bucket in the ElastiCache User Guide.
See also: AWS API Documentation
Request Syntax
client.copy_snapshot(
SourceSnapshotName='string',
TargetSnapshotName='string',
TargetBucket='string',
KmsKeyId='string'
)
string
[REQUIRED]
The name of an existing snapshot from which to make a copy.
string
[REQUIRED]
A name for the snapshot copy. ElastiCache does not permit overwriting a snapshot, therefore this name must be unique within its context - ElastiCache or an Amazon S3 bucket if exporting.
string
The Amazon S3 bucket to which the snapshot is exported. This parameter is used only when exporting a snapshot for external access.
When using this parameter to export a snapshot, be sure Amazon ElastiCache has the needed permissions to this S3 bucket. For more information, see Step 2: Grant ElastiCache Access to Your Amazon S3 Bucket in the Amazon ElastiCache User Guide .
For more information, see Exporting a Snapshot in the Amazon ElastiCache User Guide .
string
The ID of the KMS key used to encrypt the target snapshot.
dict
Response Syntax
{
'Snapshot': {
'SnapshotName': 'string',
'ReplicationGroupId': 'string',
'ReplicationGroupDescription': 'string',
'CacheClusterId': 'string',
'SnapshotStatus': 'string',
'SnapshotSource': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'TopicArn': 'string',
'Port': 123,
'CacheParameterGroupName': 'string',
'CacheSubnetGroupName': 'string',
'VpcId': 'string',
'AutoMinorVersionUpgrade': True|False,
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'NumNodeGroups': 123,
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'NodeSnapshots': [
{
'CacheClusterId': 'string',
'NodeGroupId': 'string',
'CacheNodeId': 'string',
'NodeGroupConfiguration': {
'NodeGroupId': 'string',
'Slots': 'string',
'ReplicaCount': 123,
'PrimaryAvailabilityZone': 'string',
'ReplicaAvailabilityZones': [
'string',
]
},
'CacheSize': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'SnapshotCreateTime': datetime(2015, 1, 1)
},
],
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
Snapshot (dict) --
Represents a copy of an entire Redis cluster as of the time when the snapshot was taken.
SnapshotName (string) --
The name of a snapshot. For an automatic snapshot, the name is system-generated. For a manual snapshot, this is the user-provided name.
ReplicationGroupId (string) --
The unique identifier of the source replication group.
ReplicationGroupDescription (string) --
A description of the source replication group.
CacheClusterId (string) --
The user-supplied identifier of the source cluster.
SnapshotStatus (string) --
The status of the snapshot. Valid values: creating | available | restoring | copying | deleting .
SnapshotSource (string) --
Indicates whether the snapshot is from an automatic backup (automated ) or was created manually (manual ).
CacheNodeType (string) --
The name of the compute and memory capacity node type for the source cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) used by the source cluster.
EngineVersion (string) --
The version of the cache engine version that is used by the source cluster.
NumCacheNodes (integer) --
The number of cache nodes in the source cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the source cluster is located.
CacheClusterCreateTime (datetime) --
The date and time when the source cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
TopicArn (string) --
The Amazon Resource Name (ARN) for the topic used by the source cluster for publishing notifications.
Port (integer) --
The port number used by each cache nodes in the source cluster.
CacheParameterGroupName (string) --
The cache parameter group that is associated with the source cluster.
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the source cluster.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group for the source cluster.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SnapshotRetentionLimit (integer) --
For an automatic snapshot, the number of days for which ElastiCache retains the snapshot before deleting it.
For manual snapshots, this field reflects the SnapshotRetentionLimit for the source cluster when the snapshot was created. This field is otherwise ignored: Manual snapshots do not expire, and can only be deleted using the DeleteSnapshot operation.
Important If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range during which ElastiCache takes daily snapshots of the source cluster.
NumNodeGroups (integer) --
The number of node groups (shards) in this snapshot. When restoring from a snapshot, the number of node groups (shards) in the snapshot and in the restored replication group must be the same.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for the source Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
NodeSnapshots (list) --
A list of the cache nodes in the source cluster.
(dict) --
Represents an individual cache node in a snapshot of a cluster.
CacheClusterId (string) --
A unique identifier for the source cluster.
NodeGroupId (string) --
A unique identifier for the source node group (shard).
CacheNodeId (string) --
The cache node identifier for the node in the source cluster.
NodeGroupConfiguration (dict) --
The configuration for the source node group (shard).
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
Slots (string) --
A string that specifies the keyspace for a particular node group. Keyspaces range from 0 to 16,383. The string is in the format startkey-endkey .
Example: "0-3999"
ReplicaCount (integer) --
The number of read replica nodes in this node group (shard).
PrimaryAvailabilityZone (string) --
The Availability Zone where the primary node of this node group (shard) is launched.
ReplicaAvailabilityZones (list) --
A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this list must match the value of ReplicaCount or ReplicasPerNodeGroup if not specified.
(string) --
CacheSize (string) --
The size of the cache on the source cache node.
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created in the source cluster.
SnapshotCreateTime (datetime) --
The date and time when the source node's metadata and cache data set was obtained for the snapshot.
KmsKeyId (string) --
The ID of the KMS key used to encrypt the snapshot.
ARN (string) --
The ARN (Amazon Resource Name) of the snapshot.
{'CacheCluster': {'ARN': 'string'}}
Creates a cluster. All nodes in the cluster run the same protocol-compliant cache engine software, either Memcached or Redis.
This operation is not supported for Redis (cluster mode enabled) clusters.
See also: AWS API Documentation
Request Syntax
client.create_cache_cluster(
CacheClusterId='string',
ReplicationGroupId='string',
AZMode='single-az'|'cross-az',
PreferredAvailabilityZone='string',
PreferredAvailabilityZones=[
'string',
],
NumCacheNodes=123,
CacheNodeType='string',
Engine='string',
EngineVersion='string',
CacheParameterGroupName='string',
CacheSubnetGroupName='string',
CacheSecurityGroupNames=[
'string',
],
SecurityGroupIds=[
'string',
],
Tags=[
{
'Key': 'string',
'Value': 'string'
},
],
SnapshotArns=[
'string',
],
SnapshotName='string',
PreferredMaintenanceWindow='string',
Port=123,
NotificationTopicArn='string',
AutoMinorVersionUpgrade=True|False,
SnapshotRetentionLimit=123,
SnapshotWindow='string',
AuthToken='string'
)
string
[REQUIRED]
The node group (shard) identifier. This parameter is stored as a lowercase string.
Constraints:
A name must contain from 1 to 50 alphanumeric characters or hyphens.
The first character must be a letter.
A name cannot end with a hyphen or contain two consecutive hyphens.
string
The ID of the replication group to which this cluster should belong. If this parameter is specified, the cluster is added to the specified replication group as a read replica; otherwise, the cluster is a standalone primary that is not part of any replication group.
If the specified replication group is Multi-AZ enabled and the Availability Zone is not specified, the cluster is created in Availability Zones that provide the best spread of read replicas across Availability Zones.
Note
This parameter is only valid if the Engine parameter is redis .
string
Specifies whether the nodes in this Memcached cluster are created in a single Availability Zone or created across multiple Availability Zones in the cluster's region.
This parameter is only supported for Memcached clusters.
If the AZMode and PreferredAvailabilityZones are not specified, ElastiCache assumes single-az mode.
string
The EC2 Availability Zone in which the cluster is created.
All nodes belonging to this Memcached cluster are placed in the preferred Availability Zone. If you want to create your nodes across multiple Availability Zones, use PreferredAvailabilityZones .
Default: System chosen Availability Zone.
list
A list of the Availability Zones in which cache nodes are created. The order of the zones in the list is not important.
This option is only supported on Memcached.
Note
If you are creating your cluster in an Amazon VPC (recommended) you can only locate nodes in Availability Zones that are associated with the subnets in the selected subnet group.
The number of Availability Zones listed must equal the value of NumCacheNodes .
If you want all the nodes in the same Availability Zone, use PreferredAvailabilityZone instead, or repeat the Availability Zone multiple times in the list.
Default: System chosen Availability Zones.
(string) --
integer
The initial number of cache nodes that the cluster has.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
If you need more than 20 nodes for your Memcached cluster, please fill out the ElastiCache Limit Increase Request form at http://aws.amazon.com/contact-us/elasticache-node-limit-request/ .
string
The compute and memory capacity of the nodes in the node group (shard).
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
string
The name of the cache engine to be used for this cluster.
Valid values for this parameter are: memcached | redis
string
The version number of the cache engine to be used for this cluster. To view the supported cache engine versions, use the DescribeCacheEngineVersions operation.
Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version ), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster or replication group and create it anew with the earlier engine version.
string
The name of the parameter group to associate with this cluster. If this argument is omitted, the default parameter group for the specified engine is used. You cannot use any parameter group which has cluster-enabled='yes' when creating a cluster.
string
The name of the subnet group to be used for the cluster.
Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).
Warning
If you're going to launch your cluster in an Amazon VPC, you need to create a subnet group before you start creating a cluster. For more information, see Subnets and Subnet Groups .
list
A list of security group names to associate with this cluster.
Use this parameter only when you are creating a cluster outside of an Amazon Virtual Private Cloud (Amazon VPC).
(string) --
list
One or more VPC security groups associated with the cluster.
Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).
(string) --
list
A list of cost allocation tags to be added to this resource.
(dict) --
A cost allocation Tag that can be added to an ElastiCache cluster or replication group. Tags are composed of a Key/Value pair. A tag with a null Value is permitted.
Key (string) --
The key for the tag. May not be null.
Value (string) --
The tag's value. May be null.
list
A single-element string list containing an Amazon Resource Name (ARN) that uniquely identifies a Redis RDB snapshot file stored in Amazon S3. The snapshot file is used to populate the node group (shard). The Amazon S3 object name in the ARN cannot contain any commas.
Note
This parameter is only valid if the Engine parameter is redis .
Example of an Amazon S3 ARN: arn:aws:s3:::my_bucket/snapshot1.rdb
(string) --
string
The name of a Redis snapshot from which to restore data into the new node group (shard). The snapshot status changes to restoring while the new node group (shard) is being created.
Note
This parameter is only valid if the Engine parameter is redis .
string
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period. Valid values for ddd are:
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
integer
The port number on which each of the cache nodes accepts connections.
string
The Amazon Resource Name (ARN) of the Amazon Simple Notification Service (SNS) topic to which notifications are sent.
Note
The Amazon SNS topic owner must be the same as the cluster owner.
boolean
This parameter is currently disabled.
integer
The number of days for which ElastiCache retains automatic snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot taken today is retained for 5 days before being deleted.
Note
This parameter is only valid if the Engine parameter is redis .
Default: 0 (i.e., automatic backups are disabled for this cache cluster).
string
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
string
Reserved parameter. The password used to access a password protected server.
Password constraints:
Must be only printable ASCII characters.
Must be at least 16 characters and no more than 128 characters in length.
The only permitted printable special characters are !, &, #, $, ^, <, >, and -. Other printable special characters cannot be used in the AUTH token.
For more information, see AUTH password at http://redis.io/commands/AUTH.
dict
Response Syntax
{
'CacheCluster': {
'CacheClusterId': 'string',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'ClientDownloadLandingPage': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'CacheClusterStatus': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'PendingModifiedValues': {
'NumCacheNodes': 123,
'CacheNodeIdsToRemove': [
'string',
],
'EngineVersion': 'string',
'CacheNodeType': 'string',
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'NotificationConfiguration': {
'TopicArn': 'string',
'TopicStatus': 'string'
},
'CacheSecurityGroups': [
{
'CacheSecurityGroupName': 'string',
'Status': 'string'
},
],
'CacheParameterGroup': {
'CacheParameterGroupName': 'string',
'ParameterApplyStatus': 'string',
'CacheNodeIdsToReboot': [
'string',
]
},
'CacheSubnetGroupName': 'string',
'CacheNodes': [
{
'CacheNodeId': 'string',
'CacheNodeStatus': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'Endpoint': {
'Address': 'string',
'Port': 123
},
'ParameterGroupStatus': 'string',
'SourceCacheNodeId': 'string',
'CustomerAvailabilityZone': 'string'
},
],
'AutoMinorVersionUpgrade': True|False,
'SecurityGroups': [
{
'SecurityGroupId': 'string',
'Status': 'string'
},
],
'ReplicationGroupId': 'string',
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheCluster (dict) --
Contains all of the attributes of a specific cluster.
CacheClusterId (string) --
The user-supplied identifier of the cluster. This identifier is a unique key that identifies a cluster.
ConfigurationEndpoint (dict) --
Represents a Memcached cluster endpoint which, if Automatic Discovery is enabled on the cluster, can be used by an application to connect to any node in the cluster. The configuration endpoint will always have .cfg in it.
Example: mem-3.9dvc4r.cfg.usw2.cache.amazonaws.com:11211
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ClientDownloadLandingPage (string) --
The URL of the web page where you can download the latest ElastiCache client library.
CacheNodeType (string) --
The name of the compute and memory capacity node type for the cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) to be used for this cluster.
EngineVersion (string) --
The version of the cache engine that is used in this cluster.
CacheClusterStatus (string) --
The current state of this cluster, one of the following values: available , creating , deleted , deleting , incompatible-network , modifying , rebooting cluster nodes , restore-failed , or snapshotting .
NumCacheNodes (integer) --
The number of cache nodes in the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the cluster is located or "Multiple" if the cache nodes are located in different Availability Zones.
CacheClusterCreateTime (datetime) --
The date and time when the cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
PendingModifiedValues (dict) --
A group of settings that are applied to the cluster in the future, or that are currently being applied.
NumCacheNodes (integer) --
The new number of cache nodes for the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
CacheNodeIdsToRemove (list) --
A list of cache node IDs that are being removed (or will be removed) from the cluster. A node ID is a 4-digit numeric identifier (0001, 0002, etc.).
(string) --
EngineVersion (string) --
The new cache engine version that the cluster runs.
CacheNodeType (string) --
The cache node type that this cluster or replication group is scaled to.
AuthTokenStatus (string) --
The auth token status
NotificationConfiguration (dict) --
Describes a notification topic and its status. Notification topics are used for publishing ElastiCache events to subscribers using Amazon Simple Notification Service (SNS).
TopicArn (string) --
The Amazon Resource Name (ARN) that identifies the topic.
TopicStatus (string) --
The current state of the topic.
CacheSecurityGroups (list) --
A list of cache security group elements, composed of name and status sub-elements.
(dict) --
Represents a cluster's status within a particular cache security group.
CacheSecurityGroupName (string) --
The name of the cache security group.
Status (string) --
The membership status in the cache security group. The status changes when a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
CacheParameterGroup (dict) --
Status of the cache parameter group.
CacheParameterGroupName (string) --
The name of the cache parameter group.
ParameterApplyStatus (string) --
The status of parameter updates.
CacheNodeIdsToReboot (list) --
A list of the cache node IDs which need to be rebooted for parameter changes to be applied. A node ID is a numeric identifier (0001, 0002, etc.).
(string) --
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the cluster.
CacheNodes (list) --
A list of cache nodes that are members of the cluster.
(dict) --
Represents an individual cache node within a cluster. Each cache node runs its own instance of the cluster's protocol-compliant caching software - either Memcached or Redis.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
CacheNodeId (string) --
The cache node identifier. A node ID is a numeric identifier (0001, 0002, etc.). The combination of cluster ID and node ID uniquely identifies every cache node used in a customer's AWS account.
CacheNodeStatus (string) --
The current state of this cache node, one of the following values: available , creating , rebooting , or deleting .
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created.
Endpoint (dict) --
The hostname for connecting to this cache node.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ParameterGroupStatus (string) --
The status of the parameter group applied to this cache node.
SourceCacheNodeId (string) --
The ID of the primary node to which this read replica node is synchronized. If this field is empty, this node is not associated with a primary cluster.
CustomerAvailabilityZone (string) --
The Availability Zone where this node was created and now resides.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SecurityGroups (list) --
A list of VPC Security Groups associated with the cluster.
(dict) --
Represents a single cache security group and its status.
SecurityGroupId (string) --
The identifier of the cache security group.
Status (string) --
The status of the cache security group membership. The status changes whenever a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
ReplicationGroupId (string) --
The replication group to which this cluster belongs. If this field is empty, the cluster is not associated with any replication group.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.
Example: 05:00-09:00
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable at-rest encryption on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
ARN (string) --
The ARN (Amazon Resource Name) of the cache cluster.
{'CacheParameterGroup': {'ARN': 'string'}}
Creates a new Amazon ElastiCache cache parameter group. An ElastiCache cache parameter group is a collection of parameters and their values that are applied to all of the nodes in any cluster or replication group using the CacheParameterGroup.
A newly created CacheParameterGroup is an exact duplicate of the default parameter group for the CacheParameterGroupFamily. To customize the newly created CacheParameterGroup you can change the values of specific parameters. For more information, see:
ModifyCacheParameterGroup in the ElastiCache API Reference.
Parameters and Parameter Groups in the ElastiCache User Guide.
See also: AWS API Documentation
Request Syntax
client.create_cache_parameter_group(
CacheParameterGroupName='string',
CacheParameterGroupFamily='string',
Description='string'
)
string
[REQUIRED]
A user-specified name for the cache parameter group.
string
[REQUIRED]
The name of the cache parameter group family that the cache parameter group can be used with.
Valid values are: memcached1.4 | memcached1.5 | redis2.6 | redis2.8 | redis3.2 | redis4.0 | redis5.0 |
string
[REQUIRED]
A user-specified description for the cache parameter group.
dict
Response Syntax
{
'CacheParameterGroup': {
'CacheParameterGroupName': 'string',
'CacheParameterGroupFamily': 'string',
'Description': 'string',
'IsGlobal': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheParameterGroup (dict) --
Represents the output of a CreateCacheParameterGroup operation.
CacheParameterGroupName (string) --
The name of the cache parameter group.
CacheParameterGroupFamily (string) --
The name of the cache parameter group family that this cache parameter group is compatible with.
Valid values are: memcached1.4 | memcached1.5 | redis2.6 | redis2.8 | redis3.2 | redis4.0 | redis5.0 |
Description (string) --
The description for this cache parameter group.
IsGlobal (boolean) --
Indicates whether the parameter group is associated with a Global Datastore
ARN (string) --
The ARN (Amazon Resource Name) of the cache parameter group.
{'CacheSecurityGroup': {'ARN': 'string'}}
Creates a new cache security group. Use a cache security group to control access to one or more clusters.
Cache security groups are only used when you are creating a cluster outside of an Amazon Virtual Private Cloud (Amazon VPC). If you are creating a cluster inside of a VPC, use a cache subnet group instead. For more information, see CreateCacheSubnetGroup .
See also: AWS API Documentation
Request Syntax
client.create_cache_security_group(
CacheSecurityGroupName='string',
Description='string'
)
string
[REQUIRED]
A name for the cache security group. This value is stored as a lowercase string.
Constraints: Must contain no more than 255 alphanumeric characters. Cannot be the word "Default".
Example: mysecuritygroup
string
[REQUIRED]
A description for the cache security group.
dict
Response Syntax
{
'CacheSecurityGroup': {
'OwnerId': 'string',
'CacheSecurityGroupName': 'string',
'Description': 'string',
'EC2SecurityGroups': [
{
'Status': 'string',
'EC2SecurityGroupName': 'string',
'EC2SecurityGroupOwnerId': 'string'
},
],
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheSecurityGroup (dict) --
Represents the output of one of the following operations:
AuthorizeCacheSecurityGroupIngress
CreateCacheSecurityGroup
RevokeCacheSecurityGroupIngress
OwnerId (string) --
The AWS account ID of the cache security group owner.
CacheSecurityGroupName (string) --
The name of the cache security group.
Description (string) --
The description of the cache security group.
EC2SecurityGroups (list) --
A list of Amazon EC2 security groups that are associated with this cache security group.
(dict) --
Provides ownership and status information for an Amazon EC2 security group.
Status (string) --
The status of the Amazon EC2 security group.
EC2SecurityGroupName (string) --
The name of the Amazon EC2 security group.
EC2SecurityGroupOwnerId (string) --
The AWS account ID of the Amazon EC2 security group owner.
ARN (string) --
The ARN (Amazon Resource Name) of the cache security group.
{'CacheSubnetGroup': {'ARN': 'string'}}
Creates a new cache subnet group.
Use this parameter only when you are creating a cluster in an Amazon Virtual Private Cloud (Amazon VPC).
See also: AWS API Documentation
Request Syntax
client.create_cache_subnet_group(
CacheSubnetGroupName='string',
CacheSubnetGroupDescription='string',
SubnetIds=[
'string',
]
)
string
[REQUIRED]
A name for the cache subnet group. This value is stored as a lowercase string.
Constraints: Must contain no more than 255 alphanumeric characters or hyphens.
Example: mysubnetgroup
string
[REQUIRED]
A description for the cache subnet group.
list
[REQUIRED]
A list of VPC subnet IDs for the cache subnet group.
(string) --
dict
Response Syntax
{
'CacheSubnetGroup': {
'CacheSubnetGroupName': 'string',
'CacheSubnetGroupDescription': 'string',
'VpcId': 'string',
'Subnets': [
{
'SubnetIdentifier': 'string',
'SubnetAvailabilityZone': {
'Name': 'string'
}
},
],
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheSubnetGroup (dict) --
Represents the output of one of the following operations:
CreateCacheSubnetGroup
ModifyCacheSubnetGroup
CacheSubnetGroupName (string) --
The name of the cache subnet group.
CacheSubnetGroupDescription (string) --
The description of the cache subnet group.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group.
Subnets (list) --
A list of subnets associated with the cache subnet group.
(dict) --
Represents the subnet associated with a cluster. This parameter refers to subnets defined in Amazon Virtual Private Cloud (Amazon VPC) and used with ElastiCache.
SubnetIdentifier (string) --
The unique identifier for the subnet.
SubnetAvailabilityZone (dict) --
The Availability Zone associated with the subnet.
Name (string) --
The name of the Availability Zone.
ARN (string) --
The ARN (Amazon Resource Name) of the cache subnet group.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Global Datastore for Redis offers fully managed, fast, reliable and secure cross-region replication. Using Global Datastore for Redis, you can create cross-region read replica clusters for ElastiCache for Redis to enable low-latency reads and disaster recovery across regions. For more information, see Replication Across Regions Using Global Datastore .
The GlobalReplicationGroupIdSuffix is the name of the Global Datastore.
The PrimaryReplicationGroupId represents the name of the primary cluster that accepts writes and will replicate updates to the secondary cluster.
See also: AWS API Documentation
Request Syntax
client.create_global_replication_group(
GlobalReplicationGroupIdSuffix='string',
GlobalReplicationGroupDescription='string',
PrimaryReplicationGroupId='string'
)
string
[REQUIRED]
The suffix name of a Global Datastore. The suffix guarantees uniqueness of the Global Datastore name across multiple regions.
string
Provides details of the Global Datastore
string
[REQUIRED]
The name of the primary cluster that accepts writes and will replicate updates to the secondary cluster.
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Creates a Redis (cluster mode disabled) or a Redis (cluster mode enabled) replication group.
This API can be used to create a standalone regional replication group or a secondary replication group associated with a Global Datastore.
A Redis (cluster mode disabled) replication group is a collection of clusters, where one of the clusters is a read/write primary and the others are read-only replicas. Writes to the primary are asynchronously propagated to the replicas.
A Redis (cluster mode enabled) replication group is a collection of 1 to 90 node groups (shards). Each node group (shard) has one read/write primary node and up to 5 read-only replica nodes. Writes to the primary are asynchronously propagated to the replicas. Redis (cluster mode enabled) replication groups partition the data across node groups (shards).
When a Redis (cluster mode disabled) replication group has been successfully created, you can add one or more read replicas to it, up to a total of 5 read replicas. You cannot alter a Redis (cluster mode enabled) replication group after it has been created. However, if you need to increase or decrease the number of node groups (console: shards), you can avail yourself of ElastiCache for Redis' enhanced backup and restore. For more information, see Restoring From a Backup with Cluster Resizing in the ElastiCache User Guide .
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.create_replication_group(
ReplicationGroupId='string',
ReplicationGroupDescription='string',
GlobalReplicationGroupId='string',
PrimaryClusterId='string',
AutomaticFailoverEnabled=True|False,
NumCacheClusters=123,
PreferredCacheClusterAZs=[
'string',
],
NumNodeGroups=123,
ReplicasPerNodeGroup=123,
NodeGroupConfiguration=[
{
'NodeGroupId': 'string',
'Slots': 'string',
'ReplicaCount': 123,
'PrimaryAvailabilityZone': 'string',
'ReplicaAvailabilityZones': [
'string',
]
},
],
CacheNodeType='string',
Engine='string',
EngineVersion='string',
CacheParameterGroupName='string',
CacheSubnetGroupName='string',
CacheSecurityGroupNames=[
'string',
],
SecurityGroupIds=[
'string',
],
Tags=[
{
'Key': 'string',
'Value': 'string'
},
],
SnapshotArns=[
'string',
],
SnapshotName='string',
PreferredMaintenanceWindow='string',
Port=123,
NotificationTopicArn='string',
AutoMinorVersionUpgrade=True|False,
SnapshotRetentionLimit=123,
SnapshotWindow='string',
AuthToken='string',
TransitEncryptionEnabled=True|False,
AtRestEncryptionEnabled=True|False,
KmsKeyId='string'
)
string
[REQUIRED]
The replication group identifier. This parameter is stored as a lowercase string.
Constraints:
A name must contain from 1 to 40 alphanumeric characters or hyphens.
The first character must be a letter.
A name cannot end with a hyphen or contain two consecutive hyphens.
string
[REQUIRED]
A user-created description for the replication group.
string
The name of the Global Datastore
string
The identifier of the cluster that serves as the primary for this replication group. This cluster must already exist and have a status of available .
This parameter is not required if NumCacheClusters , NumNodeGroups , or ReplicasPerNodeGroup is specified.
boolean
Specifies whether a read-only replica is automatically promoted to read/write primary if the existing primary fails.
If true , Multi-AZ is enabled for this replication group. If false , Multi-AZ is disabled for this replication group.
AutomaticFailoverEnabled must be enabled for Redis (cluster mode enabled) replication groups.
Default: false
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
integer
The number of nodes in the cluster.
This parameter is not used if there is more than one node group (shard). You should use ReplicasPerNodeGroup instead.
If AutomaticFailoverEnabled is true , the value of this parameter must be at least 2. If AutomaticFailoverEnabled is false you can omit this parameter (it will default to 1), or you can explicitly set it to a value between 2 and 6.
The maximum permitted value for NumCacheClusters is 6 (1 primary plus 5 replicas).
list
A list of EC2 Availability Zones in which the replication group's clusters are created. The order of the Availability Zones in the list is the order in which clusters are allocated. The primary cluster is created in the first AZ in the list.
This parameter is not used if there is more than one node group (shard). You should use NodeGroupConfiguration instead.
Note
If you are creating your replication group in an Amazon VPC (recommended), you can only locate clusters in Availability Zones associated with the subnets in the selected subnet group.
The number of Availability Zones listed must equal the value of NumCacheClusters .
Default: system chosen Availability Zones.
(string) --
integer
An optional parameter that specifies the number of node groups (shards) for this Redis (cluster mode enabled) replication group. For Redis (cluster mode disabled) either omit this parameter or set it to 1.
Default: 1
integer
An optional parameter that specifies the number of replica nodes in each node group (shard). Valid values are 0 to 5.
list
A list of node group (shard) configuration options. Each node group (shard) configuration has the following members: PrimaryAvailabilityZone , ReplicaAvailabilityZones , ReplicaCount , and Slots .
If you're creating a Redis (cluster mode disabled) or a Redis (cluster mode enabled) replication group, you can use this parameter to individually configure each node group (shard), or you can omit this parameter. However, it is required when seeding a Redis (cluster mode enabled) cluster from a S3 rdb file. You must configure each node group (shard) using this parameter because you must specify the slots for each node group.
(dict) --
Node group (shard) configuration options. Each node group (shard) configuration has the following: Slots , PrimaryAvailabilityZone , ReplicaAvailabilityZones , ReplicaCount .
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
Slots (string) --
A string that specifies the keyspace for a particular node group. Keyspaces range from 0 to 16,383. The string is in the format startkey-endkey .
Example: "0-3999"
ReplicaCount (integer) --
The number of read replica nodes in this node group (shard).
PrimaryAvailabilityZone (string) --
The Availability Zone where the primary node of this node group (shard) is launched.
ReplicaAvailabilityZones (list) --
A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this list must match the value of ReplicaCount or ReplicasPerNodeGroup if not specified.
(string) --
string
The compute and memory capacity of the nodes in the node group (shard).
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
string
The name of the cache engine to be used for the clusters in this replication group.
string
The version number of the cache engine to be used for the clusters in this replication group. To view the supported cache engine versions, use the DescribeCacheEngineVersions operation.
Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version ) in the ElastiCache User Guide , but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster or replication group and create it anew with the earlier engine version.
string
The name of the parameter group to associate with this replication group. If this argument is omitted, the default cache parameter group for the specified engine is used.
Note
If you are restoring to an engine version that is different than the original, you must specify the default version of that version. For example, CacheParameterGroupName=default.redis4.0 .
If you are running Redis version 3.2.4 or later, only one node group (shard), and want to use a default parameter group, we recommend that you specify the parameter group by name.
To create a Redis (cluster mode disabled) replication group, use CacheParameterGroupName=default.redis3.2 .
To create a Redis (cluster mode enabled) replication group, use CacheParameterGroupName=default.redis3.2.cluster.on .
string
The name of the cache subnet group to be used for the replication group.
Warning
If you're going to launch your cluster in an Amazon VPC, you need to create a subnet group before you start creating a cluster. For more information, see Subnets and Subnet Groups .
list
A list of cache security group names to associate with this replication group.
(string) --
list
One or more Amazon VPC security groups associated with this replication group.
Use this parameter only when you are creating a replication group in an Amazon Virtual Private Cloud (Amazon VPC).
(string) --
list
A list of cost allocation tags to be added to this resource. Tags are comma-separated key,value pairs (e.g. Key=``myKey`` , Value=``myKeyValue`` . You can include multiple tags as shown following: Key=``myKey`` , Value=``myKeyValue`` Key=``mySecondKey`` , Value=``mySecondKeyValue`` .
(dict) --
A cost allocation Tag that can be added to an ElastiCache cluster or replication group. Tags are composed of a Key/Value pair. A tag with a null Value is permitted.
Key (string) --
The key for the tag. May not be null.
Value (string) --
The tag's value. May be null.
list
A list of Amazon Resource Names (ARN) that uniquely identify the Redis RDB snapshot files stored in Amazon S3. The snapshot files are used to populate the new replication group. The Amazon S3 object name in the ARN cannot contain any commas. The new replication group will have the number of node groups (console: shards) specified by the parameter NumNodeGroups or the number of node groups configured by NodeGroupConfiguration regardless of the number of ARNs specified here.
Example of an Amazon S3 ARN: arn:aws:s3:::my_bucket/snapshot1.rdb
(string) --
string
The name of a snapshot from which to restore data into the new replication group. The snapshot status changes to restoring while the new replication group is being created.
string
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period. Valid values for ddd are:
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
integer
The port number on which each member of the replication group accepts connections.
string
The Amazon Resource Name (ARN) of the Amazon Simple Notification Service (SNS) topic to which notifications are sent.
Note
The Amazon SNS topic owner must be the same as the cluster owner.
boolean
This parameter is currently disabled.
integer
The number of days for which ElastiCache retains automatic snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Default: 0 (i.e., automatic backups are disabled for this cluster).
string
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
string
Reserved parameter. The password used to access a password protected server.
AuthToken can be specified only on replication groups where TransitEncryptionEnabled is true .
Warning
For HIPAA compliance, you must specify TransitEncryptionEnabled as true , an AuthToken , and a CacheSubnetGroup .
Password constraints:
Must be only printable ASCII characters.
Must be at least 16 characters and no more than 128 characters in length.
The only permitted printable special characters are !, &, #, $, ^, <, >, and -. Other printable special characters cannot be used in the AUTH token.
For more information, see AUTH password at http://redis.io/commands/AUTH.
boolean
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
This parameter is valid only if the Engine parameter is redis , the EngineVersion parameter is 3.2.6 , 4.x or later, and the cluster is being created in an Amazon VPC.
If you enable in-transit encryption, you must also specify a value for CacheSubnetGroup .
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
Warning
For HIPAA compliance, you must specify TransitEncryptionEnabled as true , an AuthToken , and a CacheSubnetGroup .
boolean
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
string
The ID of the KMS key used to encrypt the disk in the cluster.
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'Snapshot': {'ARN': 'string'}}
Creates a copy of an entire cluster or replication group at a specific moment in time.
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.create_snapshot(
ReplicationGroupId='string',
CacheClusterId='string',
SnapshotName='string',
KmsKeyId='string'
)
string
The identifier of an existing replication group. The snapshot is created from this replication group.
string
The identifier of an existing cluster. The snapshot is created from this cluster.
string
[REQUIRED]
A name for the snapshot being created.
string
The ID of the KMS key used to encrypt the snapshot.
dict
Response Syntax
{
'Snapshot': {
'SnapshotName': 'string',
'ReplicationGroupId': 'string',
'ReplicationGroupDescription': 'string',
'CacheClusterId': 'string',
'SnapshotStatus': 'string',
'SnapshotSource': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'TopicArn': 'string',
'Port': 123,
'CacheParameterGroupName': 'string',
'CacheSubnetGroupName': 'string',
'VpcId': 'string',
'AutoMinorVersionUpgrade': True|False,
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'NumNodeGroups': 123,
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'NodeSnapshots': [
{
'CacheClusterId': 'string',
'NodeGroupId': 'string',
'CacheNodeId': 'string',
'NodeGroupConfiguration': {
'NodeGroupId': 'string',
'Slots': 'string',
'ReplicaCount': 123,
'PrimaryAvailabilityZone': 'string',
'ReplicaAvailabilityZones': [
'string',
]
},
'CacheSize': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'SnapshotCreateTime': datetime(2015, 1, 1)
},
],
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
Snapshot (dict) --
Represents a copy of an entire Redis cluster as of the time when the snapshot was taken.
SnapshotName (string) --
The name of a snapshot. For an automatic snapshot, the name is system-generated. For a manual snapshot, this is the user-provided name.
ReplicationGroupId (string) --
The unique identifier of the source replication group.
ReplicationGroupDescription (string) --
A description of the source replication group.
CacheClusterId (string) --
The user-supplied identifier of the source cluster.
SnapshotStatus (string) --
The status of the snapshot. Valid values: creating | available | restoring | copying | deleting .
SnapshotSource (string) --
Indicates whether the snapshot is from an automatic backup (automated ) or was created manually (manual ).
CacheNodeType (string) --
The name of the compute and memory capacity node type for the source cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) used by the source cluster.
EngineVersion (string) --
The version of the cache engine version that is used by the source cluster.
NumCacheNodes (integer) --
The number of cache nodes in the source cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the source cluster is located.
CacheClusterCreateTime (datetime) --
The date and time when the source cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
TopicArn (string) --
The Amazon Resource Name (ARN) for the topic used by the source cluster for publishing notifications.
Port (integer) --
The port number used by each cache nodes in the source cluster.
CacheParameterGroupName (string) --
The cache parameter group that is associated with the source cluster.
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the source cluster.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group for the source cluster.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SnapshotRetentionLimit (integer) --
For an automatic snapshot, the number of days for which ElastiCache retains the snapshot before deleting it.
For manual snapshots, this field reflects the SnapshotRetentionLimit for the source cluster when the snapshot was created. This field is otherwise ignored: Manual snapshots do not expire, and can only be deleted using the DeleteSnapshot operation.
Important If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range during which ElastiCache takes daily snapshots of the source cluster.
NumNodeGroups (integer) --
The number of node groups (shards) in this snapshot. When restoring from a snapshot, the number of node groups (shards) in the snapshot and in the restored replication group must be the same.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for the source Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
NodeSnapshots (list) --
A list of the cache nodes in the source cluster.
(dict) --
Represents an individual cache node in a snapshot of a cluster.
CacheClusterId (string) --
A unique identifier for the source cluster.
NodeGroupId (string) --
A unique identifier for the source node group (shard).
CacheNodeId (string) --
The cache node identifier for the node in the source cluster.
NodeGroupConfiguration (dict) --
The configuration for the source node group (shard).
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
Slots (string) --
A string that specifies the keyspace for a particular node group. Keyspaces range from 0 to 16,383. The string is in the format startkey-endkey .
Example: "0-3999"
ReplicaCount (integer) --
The number of read replica nodes in this node group (shard).
PrimaryAvailabilityZone (string) --
The Availability Zone where the primary node of this node group (shard) is launched.
ReplicaAvailabilityZones (list) --
A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this list must match the value of ReplicaCount or ReplicasPerNodeGroup if not specified.
(string) --
CacheSize (string) --
The size of the cache on the source cache node.
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created in the source cluster.
SnapshotCreateTime (datetime) --
The date and time when the source node's metadata and cache data set was obtained for the snapshot.
KmsKeyId (string) --
The ID of the KMS key used to encrypt the snapshot.
ARN (string) --
The ARN (Amazon Resource Name) of the snapshot.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Decreases the number of node groups in a Global Datastore
See also: AWS API Documentation
Request Syntax
client.decrease_node_groups_in_global_replication_group(
GlobalReplicationGroupId='string',
NodeGroupCount=123,
GlobalNodeGroupsToRemove=[
'string',
],
GlobalNodeGroupsToRetain=[
'string',
],
ApplyImmediately=True|False
)
string
[REQUIRED]
The name of the Global Datastore
integer
[REQUIRED]
The number of node groups (shards) that results from the modification of the shard configuration
list
If the value of NodeGroupCount is less than the current number of node groups (shards), then either NodeGroupsToRemove or NodeGroupsToRetain is required. NodeGroupsToRemove is a list of NodeGroupIds to remove from the cluster. ElastiCache for Redis will attempt to remove all node groups listed by NodeGroupsToRemove from the cluster.
(string) --
list
If the value of NodeGroupCount is less than the current number of node groups (shards), then either NodeGroupsToRemove or NodeGroupsToRetain is required. NodeGroupsToRemove is a list of NodeGroupIds to remove from the cluster. ElastiCache for Redis will attempt to remove all node groups listed by NodeGroupsToRemove from the cluster.
(string) --
boolean
[REQUIRED]
Indicates that the shard reconfiguration process begins immediately. At present, the only permitted value for this parameter is true.
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Dynamically decreases the number of replicas in a Redis (cluster mode disabled) replication group or the number of replica nodes in one or more node groups (shards) of a Redis (cluster mode enabled) replication group. This operation is performed with no cluster down time.
See also: AWS API Documentation
Request Syntax
client.decrease_replica_count(
ReplicationGroupId='string',
NewReplicaCount=123,
ReplicaConfiguration=[
{
'NodeGroupId': 'string',
'NewReplicaCount': 123,
'PreferredAvailabilityZones': [
'string',
]
},
],
ReplicasToRemove=[
'string',
],
ApplyImmediately=True|False
)
string
[REQUIRED]
The id of the replication group from which you want to remove replica nodes.
integer
The number of read replica nodes you want at the completion of this operation. For Redis (cluster mode disabled) replication groups, this is the number of replica nodes in the replication group. For Redis (cluster mode enabled) replication groups, this is the number of replica nodes in each of the replication group's node groups.
The minimum number of replicas in a shard or replication group is:
Redis (cluster mode disabled)
If Multi-AZ with Automatic Failover is enabled: 1
If Multi-AZ with Automatic Failover is not enabled: 0
Redis (cluster mode enabled): 0 (though you will not be able to failover to a replica if your primary node fails)
list
A list of ConfigureShard objects that can be used to configure each shard in a Redis (cluster mode enabled) replication group. The ConfigureShard has three members: NewReplicaCount , NodeGroupId , and PreferredAvailabilityZones .
(dict) --
Node group (shard) configuration options when adding or removing replicas. Each node group (shard) configuration has the following members: NodeGroupId, NewReplicaCount, and PreferredAvailabilityZones.
NodeGroupId (string) -- [REQUIRED]
The 4-digit id for the node group you are configuring. For Redis (cluster mode disabled) replication groups, the node group id is always 0001. To find a Redis (cluster mode enabled)'s node group's (shard's) id, see Finding a Shard's Id .
NewReplicaCount (integer) -- [REQUIRED]
The number of replicas you want in this node group at the end of this operation. The maximum value for NewReplicaCount is 5. The minimum value depends upon the type of Redis replication group you are working with.
The minimum number of replicas in a shard or replication group is:
Redis (cluster mode disabled)
If Multi-AZ with Automatic Failover is enabled: 1
If Multi-AZ with Automatic Failover is not enable: 0
Redis (cluster mode enabled): 0 (though you will not be able to failover to a replica if your primary node fails)
PreferredAvailabilityZones (list) --
A list of PreferredAvailabilityZone strings that specify which availability zones the replication group's nodes are to be in. The nummber of PreferredAvailabilityZone values must equal the value of NewReplicaCount plus 1 to account for the primary node. If this member of ReplicaConfiguration is omitted, ElastiCache for Redis selects the availability zone for each of the replicas.
(string) --
list
A list of the node ids to remove from the replication group or node group (shard).
(string) --
boolean
[REQUIRED]
If True , the number of replica nodes is decreased immediately. ApplyImmediately=False is not currently supported.
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'CacheCluster': {'ARN': 'string'}}
Deletes a previously provisioned cluster. DeleteCacheCluster deletes all associated cache nodes, node endpoints and the cluster itself. When you receive a successful response from this operation, Amazon ElastiCache immediately begins deleting the cluster; you cannot cancel or revert this operation.
This operation is not valid for:
Redis (cluster mode enabled) clusters
A cluster that is the last read replica of a replication group
A node group (shard) that has Multi-AZ mode enabled
A cluster from a Redis (cluster mode enabled) replication group
A cluster that is not in the available state
See also: AWS API Documentation
Request Syntax
client.delete_cache_cluster(
CacheClusterId='string',
FinalSnapshotIdentifier='string'
)
string
[REQUIRED]
The cluster identifier for the cluster to be deleted. This parameter is not case sensitive.
string
The user-supplied name of a final cluster snapshot. This is the unique name that identifies the snapshot. ElastiCache creates the snapshot, and then deletes the cluster immediately afterward.
dict
Response Syntax
{
'CacheCluster': {
'CacheClusterId': 'string',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'ClientDownloadLandingPage': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'CacheClusterStatus': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'PendingModifiedValues': {
'NumCacheNodes': 123,
'CacheNodeIdsToRemove': [
'string',
],
'EngineVersion': 'string',
'CacheNodeType': 'string',
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'NotificationConfiguration': {
'TopicArn': 'string',
'TopicStatus': 'string'
},
'CacheSecurityGroups': [
{
'CacheSecurityGroupName': 'string',
'Status': 'string'
},
],
'CacheParameterGroup': {
'CacheParameterGroupName': 'string',
'ParameterApplyStatus': 'string',
'CacheNodeIdsToReboot': [
'string',
]
},
'CacheSubnetGroupName': 'string',
'CacheNodes': [
{
'CacheNodeId': 'string',
'CacheNodeStatus': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'Endpoint': {
'Address': 'string',
'Port': 123
},
'ParameterGroupStatus': 'string',
'SourceCacheNodeId': 'string',
'CustomerAvailabilityZone': 'string'
},
],
'AutoMinorVersionUpgrade': True|False,
'SecurityGroups': [
{
'SecurityGroupId': 'string',
'Status': 'string'
},
],
'ReplicationGroupId': 'string',
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheCluster (dict) --
Contains all of the attributes of a specific cluster.
CacheClusterId (string) --
The user-supplied identifier of the cluster. This identifier is a unique key that identifies a cluster.
ConfigurationEndpoint (dict) --
Represents a Memcached cluster endpoint which, if Automatic Discovery is enabled on the cluster, can be used by an application to connect to any node in the cluster. The configuration endpoint will always have .cfg in it.
Example: mem-3.9dvc4r.cfg.usw2.cache.amazonaws.com:11211
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ClientDownloadLandingPage (string) --
The URL of the web page where you can download the latest ElastiCache client library.
CacheNodeType (string) --
The name of the compute and memory capacity node type for the cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) to be used for this cluster.
EngineVersion (string) --
The version of the cache engine that is used in this cluster.
CacheClusterStatus (string) --
The current state of this cluster, one of the following values: available , creating , deleted , deleting , incompatible-network , modifying , rebooting cluster nodes , restore-failed , or snapshotting .
NumCacheNodes (integer) --
The number of cache nodes in the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the cluster is located or "Multiple" if the cache nodes are located in different Availability Zones.
CacheClusterCreateTime (datetime) --
The date and time when the cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
PendingModifiedValues (dict) --
A group of settings that are applied to the cluster in the future, or that are currently being applied.
NumCacheNodes (integer) --
The new number of cache nodes for the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
CacheNodeIdsToRemove (list) --
A list of cache node IDs that are being removed (or will be removed) from the cluster. A node ID is a 4-digit numeric identifier (0001, 0002, etc.).
(string) --
EngineVersion (string) --
The new cache engine version that the cluster runs.
CacheNodeType (string) --
The cache node type that this cluster or replication group is scaled to.
AuthTokenStatus (string) --
The auth token status
NotificationConfiguration (dict) --
Describes a notification topic and its status. Notification topics are used for publishing ElastiCache events to subscribers using Amazon Simple Notification Service (SNS).
TopicArn (string) --
The Amazon Resource Name (ARN) that identifies the topic.
TopicStatus (string) --
The current state of the topic.
CacheSecurityGroups (list) --
A list of cache security group elements, composed of name and status sub-elements.
(dict) --
Represents a cluster's status within a particular cache security group.
CacheSecurityGroupName (string) --
The name of the cache security group.
Status (string) --
The membership status in the cache security group. The status changes when a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
CacheParameterGroup (dict) --
Status of the cache parameter group.
CacheParameterGroupName (string) --
The name of the cache parameter group.
ParameterApplyStatus (string) --
The status of parameter updates.
CacheNodeIdsToReboot (list) --
A list of the cache node IDs which need to be rebooted for parameter changes to be applied. A node ID is a numeric identifier (0001, 0002, etc.).
(string) --
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the cluster.
CacheNodes (list) --
A list of cache nodes that are members of the cluster.
(dict) --
Represents an individual cache node within a cluster. Each cache node runs its own instance of the cluster's protocol-compliant caching software - either Memcached or Redis.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
CacheNodeId (string) --
The cache node identifier. A node ID is a numeric identifier (0001, 0002, etc.). The combination of cluster ID and node ID uniquely identifies every cache node used in a customer's AWS account.
CacheNodeStatus (string) --
The current state of this cache node, one of the following values: available , creating , rebooting , or deleting .
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created.
Endpoint (dict) --
The hostname for connecting to this cache node.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ParameterGroupStatus (string) --
The status of the parameter group applied to this cache node.
SourceCacheNodeId (string) --
The ID of the primary node to which this read replica node is synchronized. If this field is empty, this node is not associated with a primary cluster.
CustomerAvailabilityZone (string) --
The Availability Zone where this node was created and now resides.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SecurityGroups (list) --
A list of VPC Security Groups associated with the cluster.
(dict) --
Represents a single cache security group and its status.
SecurityGroupId (string) --
The identifier of the cache security group.
Status (string) --
The status of the cache security group membership. The status changes whenever a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
ReplicationGroupId (string) --
The replication group to which this cluster belongs. If this field is empty, the cluster is not associated with any replication group.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.
Example: 05:00-09:00
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable at-rest encryption on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
ARN (string) --
The ARN (Amazon Resource Name) of the cache cluster.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Deleting a Global Datastore is a two-step process:
First, you must DisassociateGlobalReplicationGroup to remove the secondary clusters in the Global Datastore.
Once the Global Datastore contains only the primary cluster, you can use DeleteGlobalReplicationGroup API to delete the Global Datastore while retainining the primary cluster using Retain…= true.
Since the Global Datastore has only a primary cluster, you can delete the Global Datastore while retaining the primary by setting RetainPrimaryCluster=true .
When you receive a successful response from this operation, Amazon ElastiCache immediately begins deleting the selected resources; you cannot cancel or revert this operation.
See also: AWS API Documentation
Request Syntax
client.delete_global_replication_group(
GlobalReplicationGroupId='string',
RetainPrimaryReplicationGroup=True|False
)
string
[REQUIRED]
The name of the Global Datastore
boolean
[REQUIRED]
The primary replication group is retained as a standalone replication group.
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Deletes an existing replication group. By default, this operation deletes the entire replication group, including the primary/primaries and all of the read replicas. If the replication group has only one primary, you can optionally delete only the read replicas, while retaining the primary by setting RetainPrimaryCluster=true .
When you receive a successful response from this operation, Amazon ElastiCache immediately begins deleting the selected resources; you cannot cancel or revert this operation.
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.delete_replication_group(
ReplicationGroupId='string',
RetainPrimaryCluster=True|False,
FinalSnapshotIdentifier='string'
)
string
[REQUIRED]
The identifier for the cluster to be deleted. This parameter is not case sensitive.
boolean
If set to true , all of the read replicas are deleted, but the primary node is retained.
string
The name of a final node group (shard) snapshot. ElastiCache creates the snapshot from the primary node in the cluster, rather than one of the replicas; this is to ensure that it captures the freshest data. After the final snapshot is taken, the replication group is immediately deleted.
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'Snapshot': {'ARN': 'string'}}
Deletes an existing snapshot. When you receive a successful response from this operation, ElastiCache immediately begins deleting the snapshot; you cannot cancel or revert this operation.
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.delete_snapshot(
SnapshotName='string'
)
string
[REQUIRED]
The name of the snapshot to be deleted.
dict
Response Syntax
{
'Snapshot': {
'SnapshotName': 'string',
'ReplicationGroupId': 'string',
'ReplicationGroupDescription': 'string',
'CacheClusterId': 'string',
'SnapshotStatus': 'string',
'SnapshotSource': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'TopicArn': 'string',
'Port': 123,
'CacheParameterGroupName': 'string',
'CacheSubnetGroupName': 'string',
'VpcId': 'string',
'AutoMinorVersionUpgrade': True|False,
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'NumNodeGroups': 123,
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'NodeSnapshots': [
{
'CacheClusterId': 'string',
'NodeGroupId': 'string',
'CacheNodeId': 'string',
'NodeGroupConfiguration': {
'NodeGroupId': 'string',
'Slots': 'string',
'ReplicaCount': 123,
'PrimaryAvailabilityZone': 'string',
'ReplicaAvailabilityZones': [
'string',
]
},
'CacheSize': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'SnapshotCreateTime': datetime(2015, 1, 1)
},
],
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
Snapshot (dict) --
Represents a copy of an entire Redis cluster as of the time when the snapshot was taken.
SnapshotName (string) --
The name of a snapshot. For an automatic snapshot, the name is system-generated. For a manual snapshot, this is the user-provided name.
ReplicationGroupId (string) --
The unique identifier of the source replication group.
ReplicationGroupDescription (string) --
A description of the source replication group.
CacheClusterId (string) --
The user-supplied identifier of the source cluster.
SnapshotStatus (string) --
The status of the snapshot. Valid values: creating | available | restoring | copying | deleting .
SnapshotSource (string) --
Indicates whether the snapshot is from an automatic backup (automated ) or was created manually (manual ).
CacheNodeType (string) --
The name of the compute and memory capacity node type for the source cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) used by the source cluster.
EngineVersion (string) --
The version of the cache engine version that is used by the source cluster.
NumCacheNodes (integer) --
The number of cache nodes in the source cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the source cluster is located.
CacheClusterCreateTime (datetime) --
The date and time when the source cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
TopicArn (string) --
The Amazon Resource Name (ARN) for the topic used by the source cluster for publishing notifications.
Port (integer) --
The port number used by each cache nodes in the source cluster.
CacheParameterGroupName (string) --
The cache parameter group that is associated with the source cluster.
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the source cluster.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group for the source cluster.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SnapshotRetentionLimit (integer) --
For an automatic snapshot, the number of days for which ElastiCache retains the snapshot before deleting it.
For manual snapshots, this field reflects the SnapshotRetentionLimit for the source cluster when the snapshot was created. This field is otherwise ignored: Manual snapshots do not expire, and can only be deleted using the DeleteSnapshot operation.
Important If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range during which ElastiCache takes daily snapshots of the source cluster.
NumNodeGroups (integer) --
The number of node groups (shards) in this snapshot. When restoring from a snapshot, the number of node groups (shards) in the snapshot and in the restored replication group must be the same.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for the source Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
NodeSnapshots (list) --
A list of the cache nodes in the source cluster.
(dict) --
Represents an individual cache node in a snapshot of a cluster.
CacheClusterId (string) --
A unique identifier for the source cluster.
NodeGroupId (string) --
A unique identifier for the source node group (shard).
CacheNodeId (string) --
The cache node identifier for the node in the source cluster.
NodeGroupConfiguration (dict) --
The configuration for the source node group (shard).
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
Slots (string) --
A string that specifies the keyspace for a particular node group. Keyspaces range from 0 to 16,383. The string is in the format startkey-endkey .
Example: "0-3999"
ReplicaCount (integer) --
The number of read replica nodes in this node group (shard).
PrimaryAvailabilityZone (string) --
The Availability Zone where the primary node of this node group (shard) is launched.
ReplicaAvailabilityZones (list) --
A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this list must match the value of ReplicaCount or ReplicasPerNodeGroup if not specified.
(string) --
CacheSize (string) --
The size of the cache on the source cache node.
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created in the source cluster.
SnapshotCreateTime (datetime) --
The date and time when the source node's metadata and cache data set was obtained for the snapshot.
KmsKeyId (string) --
The ID of the KMS key used to encrypt the snapshot.
ARN (string) --
The ARN (Amazon Resource Name) of the snapshot.
{'CacheClusters': {'ARN': 'string'}}
Returns information about all provisioned clusters if no cluster identifier is specified, or about a specific cache cluster if a cluster identifier is supplied.
By default, abbreviated information about the clusters is returned. You can use the optional ShowCacheNodeInfo flag to retrieve detailed information about the cache nodes associated with the clusters. These details include the DNS address and port for the cache node endpoint.
If the cluster is in the creating state, only cluster-level information is displayed until all of the nodes are successfully provisioned.
If the cluster is in the deleting state, only cluster-level information is displayed.
If cache nodes are currently being added to the cluster, node endpoint information and creation time for the additional nodes are not displayed until they are completely provisioned. When the cluster state is available , the cluster is ready for use.
If cache nodes are currently being removed from the cluster, no endpoint information for the removed nodes is displayed.
See also: AWS API Documentation
Request Syntax
client.describe_cache_clusters(
CacheClusterId='string',
MaxRecords=123,
Marker='string',
ShowCacheNodeInfo=True|False,
ShowCacheClustersNotInReplicationGroups=True|False
)
string
The user-supplied cluster identifier. If this parameter is specified, only information about that specific cluster is returned. This parameter isn't case sensitive.
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
Default: 100
Constraints: minimum 20; maximum 100.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
boolean
An optional flag that can be included in the DescribeCacheCluster request to retrieve information about the individual cache nodes.
boolean
An optional flag that can be included in the DescribeCacheCluster request to show only nodes (API/CLI: clusters) that are not members of a replication group. In practice, this mean Memcached and single node Redis clusters.
dict
Response Syntax
{
'Marker': 'string',
'CacheClusters': [
{
'CacheClusterId': 'string',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'ClientDownloadLandingPage': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'CacheClusterStatus': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'PendingModifiedValues': {
'NumCacheNodes': 123,
'CacheNodeIdsToRemove': [
'string',
],
'EngineVersion': 'string',
'CacheNodeType': 'string',
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'NotificationConfiguration': {
'TopicArn': 'string',
'TopicStatus': 'string'
},
'CacheSecurityGroups': [
{
'CacheSecurityGroupName': 'string',
'Status': 'string'
},
],
'CacheParameterGroup': {
'CacheParameterGroupName': 'string',
'ParameterApplyStatus': 'string',
'CacheNodeIdsToReboot': [
'string',
]
},
'CacheSubnetGroupName': 'string',
'CacheNodes': [
{
'CacheNodeId': 'string',
'CacheNodeStatus': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'Endpoint': {
'Address': 'string',
'Port': 123
},
'ParameterGroupStatus': 'string',
'SourceCacheNodeId': 'string',
'CustomerAvailabilityZone': 'string'
},
],
'AutoMinorVersionUpgrade': True|False,
'SecurityGroups': [
{
'SecurityGroupId': 'string',
'Status': 'string'
},
],
'ReplicationGroupId': 'string',
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Represents the output of a DescribeCacheClusters operation.
Marker (string) --
Provides an identifier to allow retrieval of paginated results.
CacheClusters (list) --
A list of clusters. Each item in the list contains detailed information about one cluster.
(dict) --
Contains all of the attributes of a specific cluster.
CacheClusterId (string) --
The user-supplied identifier of the cluster. This identifier is a unique key that identifies a cluster.
ConfigurationEndpoint (dict) --
Represents a Memcached cluster endpoint which, if Automatic Discovery is enabled on the cluster, can be used by an application to connect to any node in the cluster. The configuration endpoint will always have .cfg in it.
Example: mem-3.9dvc4r.cfg.usw2.cache.amazonaws.com:11211
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ClientDownloadLandingPage (string) --
The URL of the web page where you can download the latest ElastiCache client library.
CacheNodeType (string) --
The name of the compute and memory capacity node type for the cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) to be used for this cluster.
EngineVersion (string) --
The version of the cache engine that is used in this cluster.
CacheClusterStatus (string) --
The current state of this cluster, one of the following values: available , creating , deleted , deleting , incompatible-network , modifying , rebooting cluster nodes , restore-failed , or snapshotting .
NumCacheNodes (integer) --
The number of cache nodes in the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the cluster is located or "Multiple" if the cache nodes are located in different Availability Zones.
CacheClusterCreateTime (datetime) --
The date and time when the cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
PendingModifiedValues (dict) --
A group of settings that are applied to the cluster in the future, or that are currently being applied.
NumCacheNodes (integer) --
The new number of cache nodes for the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
CacheNodeIdsToRemove (list) --
A list of cache node IDs that are being removed (or will be removed) from the cluster. A node ID is a 4-digit numeric identifier (0001, 0002, etc.).
(string) --
EngineVersion (string) --
The new cache engine version that the cluster runs.
CacheNodeType (string) --
The cache node type that this cluster or replication group is scaled to.
AuthTokenStatus (string) --
The auth token status
NotificationConfiguration (dict) --
Describes a notification topic and its status. Notification topics are used for publishing ElastiCache events to subscribers using Amazon Simple Notification Service (SNS).
TopicArn (string) --
The Amazon Resource Name (ARN) that identifies the topic.
TopicStatus (string) --
The current state of the topic.
CacheSecurityGroups (list) --
A list of cache security group elements, composed of name and status sub-elements.
(dict) --
Represents a cluster's status within a particular cache security group.
CacheSecurityGroupName (string) --
The name of the cache security group.
Status (string) --
The membership status in the cache security group. The status changes when a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
CacheParameterGroup (dict) --
Status of the cache parameter group.
CacheParameterGroupName (string) --
The name of the cache parameter group.
ParameterApplyStatus (string) --
The status of parameter updates.
CacheNodeIdsToReboot (list) --
A list of the cache node IDs which need to be rebooted for parameter changes to be applied. A node ID is a numeric identifier (0001, 0002, etc.).
(string) --
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the cluster.
CacheNodes (list) --
A list of cache nodes that are members of the cluster.
(dict) --
Represents an individual cache node within a cluster. Each cache node runs its own instance of the cluster's protocol-compliant caching software - either Memcached or Redis.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
CacheNodeId (string) --
The cache node identifier. A node ID is a numeric identifier (0001, 0002, etc.). The combination of cluster ID and node ID uniquely identifies every cache node used in a customer's AWS account.
CacheNodeStatus (string) --
The current state of this cache node, one of the following values: available , creating , rebooting , or deleting .
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created.
Endpoint (dict) --
The hostname for connecting to this cache node.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ParameterGroupStatus (string) --
The status of the parameter group applied to this cache node.
SourceCacheNodeId (string) --
The ID of the primary node to which this read replica node is synchronized. If this field is empty, this node is not associated with a primary cluster.
CustomerAvailabilityZone (string) --
The Availability Zone where this node was created and now resides.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SecurityGroups (list) --
A list of VPC Security Groups associated with the cluster.
(dict) --
Represents a single cache security group and its status.
SecurityGroupId (string) --
The identifier of the cache security group.
Status (string) --
The status of the cache security group membership. The status changes whenever a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
ReplicationGroupId (string) --
The replication group to which this cluster belongs. If this field is empty, the cluster is not associated with any replication group.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.
Example: 05:00-09:00
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable at-rest encryption on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
ARN (string) --
The ARN (Amazon Resource Name) of the cache cluster.
{'CacheParameterGroups': {'ARN': 'string'}}
Returns a list of cache parameter group descriptions. If a cache parameter group name is specified, the list contains only the descriptions for that group.
See also: AWS API Documentation
Request Syntax
client.describe_cache_parameter_groups(
CacheParameterGroupName='string',
MaxRecords=123,
Marker='string'
)
string
The name of a specific cache parameter group to return details for.
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
Default: 100
Constraints: minimum 20; maximum 100.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
dict
Response Syntax
{
'Marker': 'string',
'CacheParameterGroups': [
{
'CacheParameterGroupName': 'string',
'CacheParameterGroupFamily': 'string',
'Description': 'string',
'IsGlobal': True|False,
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Represents the output of a DescribeCacheParameterGroups operation.
Marker (string) --
Provides an identifier to allow retrieval of paginated results.
CacheParameterGroups (list) --
A list of cache parameter groups. Each element in the list contains detailed information about one cache parameter group.
(dict) --
Represents the output of a CreateCacheParameterGroup operation.
CacheParameterGroupName (string) --
The name of the cache parameter group.
CacheParameterGroupFamily (string) --
The name of the cache parameter group family that this cache parameter group is compatible with.
Valid values are: memcached1.4 | memcached1.5 | redis2.6 | redis2.8 | redis3.2 | redis4.0 | redis5.0 |
Description (string) --
The description for this cache parameter group.
IsGlobal (boolean) --
Indicates whether the parameter group is associated with a Global Datastore
ARN (string) --
The ARN (Amazon Resource Name) of the cache parameter group.
{'CacheSecurityGroups': {'ARN': 'string'}}
Returns a list of cache security group descriptions. If a cache security group name is specified, the list contains only the description of that group. This applicable only when you have ElastiCache in Classic setup
See also: AWS API Documentation
Request Syntax
client.describe_cache_security_groups(
CacheSecurityGroupName='string',
MaxRecords=123,
Marker='string'
)
string
The name of the cache security group to return details for.
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
Default: 100
Constraints: minimum 20; maximum 100.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
dict
Response Syntax
{
'Marker': 'string',
'CacheSecurityGroups': [
{
'OwnerId': 'string',
'CacheSecurityGroupName': 'string',
'Description': 'string',
'EC2SecurityGroups': [
{
'Status': 'string',
'EC2SecurityGroupName': 'string',
'EC2SecurityGroupOwnerId': 'string'
},
],
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Represents the output of a DescribeCacheSecurityGroups operation.
Marker (string) --
Provides an identifier to allow retrieval of paginated results.
CacheSecurityGroups (list) --
A list of cache security groups. Each element in the list contains detailed information about one group.
(dict) --
Represents the output of one of the following operations:
AuthorizeCacheSecurityGroupIngress
CreateCacheSecurityGroup
RevokeCacheSecurityGroupIngress
OwnerId (string) --
The AWS account ID of the cache security group owner.
CacheSecurityGroupName (string) --
The name of the cache security group.
Description (string) --
The description of the cache security group.
EC2SecurityGroups (list) --
A list of Amazon EC2 security groups that are associated with this cache security group.
(dict) --
Provides ownership and status information for an Amazon EC2 security group.
Status (string) --
The status of the Amazon EC2 security group.
EC2SecurityGroupName (string) --
The name of the Amazon EC2 security group.
EC2SecurityGroupOwnerId (string) --
The AWS account ID of the Amazon EC2 security group owner.
ARN (string) --
The ARN (Amazon Resource Name) of the cache security group.
{'CacheSubnetGroups': {'ARN': 'string'}}
Returns a list of cache subnet group descriptions. If a subnet group name is specified, the list contains only the description of that group. This is applicable only when you have ElastiCache in VPC setup. All ElastiCache clusters now launch in VPC by default.
See also: AWS API Documentation
Request Syntax
client.describe_cache_subnet_groups(
CacheSubnetGroupName='string',
MaxRecords=123,
Marker='string'
)
string
The name of the cache subnet group to return details for.
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
Default: 100
Constraints: minimum 20; maximum 100.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
dict
Response Syntax
{
'Marker': 'string',
'CacheSubnetGroups': [
{
'CacheSubnetGroupName': 'string',
'CacheSubnetGroupDescription': 'string',
'VpcId': 'string',
'Subnets': [
{
'SubnetIdentifier': 'string',
'SubnetAvailabilityZone': {
'Name': 'string'
}
},
],
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Represents the output of a DescribeCacheSubnetGroups operation.
Marker (string) --
Provides an identifier to allow retrieval of paginated results.
CacheSubnetGroups (list) --
A list of cache subnet groups. Each element in the list contains detailed information about one group.
(dict) --
Represents the output of one of the following operations:
CreateCacheSubnetGroup
ModifyCacheSubnetGroup
CacheSubnetGroupName (string) --
The name of the cache subnet group.
CacheSubnetGroupDescription (string) --
The description of the cache subnet group.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group.
Subnets (list) --
A list of subnets associated with the cache subnet group.
(dict) --
Represents the subnet associated with a cluster. This parameter refers to subnets defined in Amazon Virtual Private Cloud (Amazon VPC) and used with ElastiCache.
SubnetIdentifier (string) --
The unique identifier for the subnet.
SubnetAvailabilityZone (dict) --
The Availability Zone associated with the subnet.
Name (string) --
The name of the Availability Zone.
ARN (string) --
The ARN (Amazon Resource Name) of the cache subnet group.
{'GlobalReplicationGroups': {'ARN': 'string'}}
Returns information about a particular global replication group. If no identifier is specified, returns information about all Global Datastores.
See also: AWS API Documentation
Request Syntax
client.describe_global_replication_groups(
GlobalReplicationGroupId='string',
MaxRecords=123,
Marker='string',
ShowMemberInfo=True|False
)
string
The name of the Global Datastore
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
boolean
Returns the list of members that comprise the Global Datastore.
dict
Response Syntax
{
'Marker': 'string',
'GlobalReplicationGroups': [
{
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Marker (string) --
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords. >
GlobalReplicationGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'ReplicationGroups': {'ARN': 'string'}}
Returns information about a particular replication group. If no identifier is specified, DescribeReplicationGroups returns information about all replication groups.
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.describe_replication_groups(
ReplicationGroupId='string',
MaxRecords=123,
Marker='string'
)
string
The identifier for the replication group to be described. This parameter is not case sensitive.
If you do not specify this parameter, information about all replication groups is returned.
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
Default: 100
Constraints: minimum 20; maximum 100.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
dict
Response Syntax
{
'Marker': 'string',
'ReplicationGroups': [
{
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Represents the output of a DescribeReplicationGroups operation.
Marker (string) --
Provides an identifier to allow retrieval of paginated results.
ReplicationGroups (list) --
A list of replication groups. Each item in the list contains detailed information about one replication group.
(dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'Snapshots': {'ARN': 'string'}}
Returns information about cluster or replication group snapshots. By default, DescribeSnapshots lists all of your snapshots; it can optionally describe a single snapshot, or just the snapshots associated with a particular cache cluster.
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.describe_snapshots(
ReplicationGroupId='string',
CacheClusterId='string',
SnapshotName='string',
SnapshotSource='string',
Marker='string',
MaxRecords=123,
ShowNodeGroupConfig=True|False
)
string
A user-supplied replication group identifier. If this parameter is specified, only snapshots associated with that specific replication group are described.
string
A user-supplied cluster identifier. If this parameter is specified, only snapshots associated with that specific cluster are described.
string
A user-supplied name of the snapshot. If this parameter is specified, only this snapshot are described.
string
If set to system , the output shows snapshots that were automatically created by ElastiCache. If set to user the output shows snapshots that were manually created. If omitted, the output shows both automatically and manually created snapshots.
string
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
integer
The maximum number of records to include in the response. If more records exist than the specified MaxRecords value, a marker is included in the response so that the remaining results can be retrieved.
Default: 50
Constraints: minimum 20; maximum 50.
boolean
A Boolean value which if true, the node group (shard) configuration is included in the snapshot description.
dict
Response Syntax
{
'Marker': 'string',
'Snapshots': [
{
'SnapshotName': 'string',
'ReplicationGroupId': 'string',
'ReplicationGroupDescription': 'string',
'CacheClusterId': 'string',
'SnapshotStatus': 'string',
'SnapshotSource': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'TopicArn': 'string',
'Port': 123,
'CacheParameterGroupName': 'string',
'CacheSubnetGroupName': 'string',
'VpcId': 'string',
'AutoMinorVersionUpgrade': True|False,
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'NumNodeGroups': 123,
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'NodeSnapshots': [
{
'CacheClusterId': 'string',
'NodeGroupId': 'string',
'CacheNodeId': 'string',
'NodeGroupConfiguration': {
'NodeGroupId': 'string',
'Slots': 'string',
'ReplicaCount': 123,
'PrimaryAvailabilityZone': 'string',
'ReplicaAvailabilityZones': [
'string',
]
},
'CacheSize': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'SnapshotCreateTime': datetime(2015, 1, 1)
},
],
'KmsKeyId': 'string',
'ARN': 'string'
},
]
}
Response Structure
(dict) --
Represents the output of a DescribeSnapshots operation.
Marker (string) --
An optional marker returned from a prior request. Use this marker for pagination of results from this operation. If this parameter is specified, the response includes only records beyond the marker, up to the value specified by MaxRecords .
Snapshots (list) --
A list of snapshots. Each item in the list contains detailed information about one snapshot.
(dict) --
Represents a copy of an entire Redis cluster as of the time when the snapshot was taken.
SnapshotName (string) --
The name of a snapshot. For an automatic snapshot, the name is system-generated. For a manual snapshot, this is the user-provided name.
ReplicationGroupId (string) --
The unique identifier of the source replication group.
ReplicationGroupDescription (string) --
A description of the source replication group.
CacheClusterId (string) --
The user-supplied identifier of the source cluster.
SnapshotStatus (string) --
The status of the snapshot. Valid values: creating | available | restoring | copying | deleting .
SnapshotSource (string) --
Indicates whether the snapshot is from an automatic backup (automated ) or was created manually (manual ).
CacheNodeType (string) --
The name of the compute and memory capacity node type for the source cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) used by the source cluster.
EngineVersion (string) --
The version of the cache engine version that is used by the source cluster.
NumCacheNodes (integer) --
The number of cache nodes in the source cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the source cluster is located.
CacheClusterCreateTime (datetime) --
The date and time when the source cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
TopicArn (string) --
The Amazon Resource Name (ARN) for the topic used by the source cluster for publishing notifications.
Port (integer) --
The port number used by each cache nodes in the source cluster.
CacheParameterGroupName (string) --
The cache parameter group that is associated with the source cluster.
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the source cluster.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group for the source cluster.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SnapshotRetentionLimit (integer) --
For an automatic snapshot, the number of days for which ElastiCache retains the snapshot before deleting it.
For manual snapshots, this field reflects the SnapshotRetentionLimit for the source cluster when the snapshot was created. This field is otherwise ignored: Manual snapshots do not expire, and can only be deleted using the DeleteSnapshot operation.
Important If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range during which ElastiCache takes daily snapshots of the source cluster.
NumNodeGroups (integer) --
The number of node groups (shards) in this snapshot. When restoring from a snapshot, the number of node groups (shards) in the snapshot and in the restored replication group must be the same.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for the source Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
NodeSnapshots (list) --
A list of the cache nodes in the source cluster.
(dict) --
Represents an individual cache node in a snapshot of a cluster.
CacheClusterId (string) --
A unique identifier for the source cluster.
NodeGroupId (string) --
A unique identifier for the source node group (shard).
CacheNodeId (string) --
The cache node identifier for the node in the source cluster.
NodeGroupConfiguration (dict) --
The configuration for the source node group (shard).
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
Slots (string) --
A string that specifies the keyspace for a particular node group. Keyspaces range from 0 to 16,383. The string is in the format startkey-endkey .
Example: "0-3999"
ReplicaCount (integer) --
The number of read replica nodes in this node group (shard).
PrimaryAvailabilityZone (string) --
The Availability Zone where the primary node of this node group (shard) is launched.
ReplicaAvailabilityZones (list) --
A list of Availability Zones to be used for the read replicas. The number of Availability Zones in this list must match the value of ReplicaCount or ReplicasPerNodeGroup if not specified.
(string) --
CacheSize (string) --
The size of the cache on the source cache node.
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created in the source cluster.
SnapshotCreateTime (datetime) --
The date and time when the source node's metadata and cache data set was obtained for the snapshot.
KmsKeyId (string) --
The ID of the KMS key used to encrypt the snapshot.
ARN (string) --
The ARN (Amazon Resource Name) of the snapshot.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Remove a secondary cluster from the Global Datastore using the Global Datastore name. The secondary cluster will no longer receive updates from the primary cluster, but will remain as a standalone cluster in that AWS region.
See also: AWS API Documentation
Request Syntax
client.disassociate_global_replication_group(
GlobalReplicationGroupId='string',
ReplicationGroupId='string',
ReplicationGroupRegion='string'
)
string
[REQUIRED]
The name of the Global Datastore
string
[REQUIRED]
The name of the secondary cluster you wish to remove from the Global Datastore
string
[REQUIRED]
The AWS region of secondary cluster you wish to remove from the Global Datastore
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Used to failover the primary region to a selected secondary region. The selected secondary region will be come primary, and all other clusters will become secondary.
See also: AWS API Documentation
Request Syntax
client.failover_global_replication_group(
GlobalReplicationGroupId='string',
PrimaryRegion='string',
PrimaryReplicationGroupId='string'
)
string
[REQUIRED]
The name of the Global Datastore
string
[REQUIRED]
The AWS region of the primary cluster of the Global Datastore
string
[REQUIRED]
The name of the primary replication group
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Increase the number of node groups in the Global Datastore
See also: AWS API Documentation
Request Syntax
client.increase_node_groups_in_global_replication_group(
GlobalReplicationGroupId='string',
NodeGroupCount=123,
RegionalConfigurations=[
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'ReshardingConfiguration': [
{
'NodeGroupId': 'string',
'PreferredAvailabilityZones': [
'string',
]
},
]
},
],
ApplyImmediately=True|False
)
string
[REQUIRED]
The name of the Global Datastore
integer
[REQUIRED]
The number of node groups you wish to add
list
Describes the replication group IDs, the AWS regions where they are stored and the shard configuration for each that comprise the Global Datastore
(dict) --
A list of the replication groups
ReplicationGroupId (string) -- [REQUIRED]
The name of the secondary cluster
ReplicationGroupRegion (string) -- [REQUIRED]
The AWS region where the cluster is stored
ReshardingConfiguration (list) -- [REQUIRED]
A list of PreferredAvailabilityZones objects that specifies the configuration of a node group in the resharded cluster.
(dict) --
A list of PreferredAvailabilityZones objects that specifies the configuration of a node group in the resharded cluster.
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
PreferredAvailabilityZones (list) --
A list of preferred availability zones for the nodes in this cluster.
(string) --
boolean
[REQUIRED]
Indicates that the process begins immediately. At present, the only permitted value for this parameter is true.
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Dynamically increases the number of replics in a Redis (cluster mode disabled) replication group or the number of replica nodes in one or more node groups (shards) of a Redis (cluster mode enabled) replication group. This operation is performed with no cluster down time.
See also: AWS API Documentation
Request Syntax
client.increase_replica_count(
ReplicationGroupId='string',
NewReplicaCount=123,
ReplicaConfiguration=[
{
'NodeGroupId': 'string',
'NewReplicaCount': 123,
'PreferredAvailabilityZones': [
'string',
]
},
],
ApplyImmediately=True|False
)
string
[REQUIRED]
The id of the replication group to which you want to add replica nodes.
integer
The number of read replica nodes you want at the completion of this operation. For Redis (cluster mode disabled) replication groups, this is the number of replica nodes in the replication group. For Redis (cluster mode enabled) replication groups, this is the number of replica nodes in each of the replication group's node groups.
list
A list of ConfigureShard objects that can be used to configure each shard in a Redis (cluster mode enabled) replication group. The ConfigureShard has three members: NewReplicaCount , NodeGroupId , and PreferredAvailabilityZones .
(dict) --
Node group (shard) configuration options when adding or removing replicas. Each node group (shard) configuration has the following members: NodeGroupId, NewReplicaCount, and PreferredAvailabilityZones.
NodeGroupId (string) -- [REQUIRED]
The 4-digit id for the node group you are configuring. For Redis (cluster mode disabled) replication groups, the node group id is always 0001. To find a Redis (cluster mode enabled)'s node group's (shard's) id, see Finding a Shard's Id .
NewReplicaCount (integer) -- [REQUIRED]
The number of replicas you want in this node group at the end of this operation. The maximum value for NewReplicaCount is 5. The minimum value depends upon the type of Redis replication group you are working with.
The minimum number of replicas in a shard or replication group is:
Redis (cluster mode disabled)
If Multi-AZ with Automatic Failover is enabled: 1
If Multi-AZ with Automatic Failover is not enable: 0
Redis (cluster mode enabled): 0 (though you will not be able to failover to a replica if your primary node fails)
PreferredAvailabilityZones (list) --
A list of PreferredAvailabilityZone strings that specify which availability zones the replication group's nodes are to be in. The nummber of PreferredAvailabilityZone values must equal the value of NewReplicaCount plus 1 to account for the primary node. If this member of ReplicaConfiguration is omitted, ElastiCache for Redis selects the availability zone for each of the replicas.
(string) --
boolean
[REQUIRED]
If True , the number of replica nodes is increased immediately. ApplyImmediately=False is not currently supported.
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'CacheCluster': {'ARN': 'string'}}
Modifies the settings for a cluster. You can use this operation to change one or more cluster configuration parameters by specifying the parameters and the new values.
See also: AWS API Documentation
Request Syntax
client.modify_cache_cluster(
CacheClusterId='string',
NumCacheNodes=123,
CacheNodeIdsToRemove=[
'string',
],
AZMode='single-az'|'cross-az',
NewAvailabilityZones=[
'string',
],
CacheSecurityGroupNames=[
'string',
],
SecurityGroupIds=[
'string',
],
PreferredMaintenanceWindow='string',
NotificationTopicArn='string',
CacheParameterGroupName='string',
NotificationTopicStatus='string',
ApplyImmediately=True|False,
EngineVersion='string',
AutoMinorVersionUpgrade=True|False,
SnapshotRetentionLimit=123,
SnapshotWindow='string',
CacheNodeType='string',
AuthToken='string',
AuthTokenUpdateStrategy='SET'|'ROTATE'
)
string
[REQUIRED]
The cluster identifier. This value is stored as a lowercase string.
integer
The number of cache nodes that the cluster should have. If the value for NumCacheNodes is greater than the sum of the number of current cache nodes and the number of cache nodes pending creation (which may be zero), more nodes are added. If the value is less than the number of existing cache nodes, nodes are removed. If the value is equal to the number of current cache nodes, any pending add or remove requests are canceled.
If you are removing cache nodes, you must use the CacheNodeIdsToRemove parameter to provide the IDs of the specific cache nodes to remove.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
Note
Adding or removing Memcached cache nodes can be applied immediately or as a pending operation (see ApplyImmediately ).
A pending operation to modify the number of cache nodes in a cluster during its maintenance window, whether by adding or removing nodes in accordance with the scale out architecture, is not queued. The customer's latest request to add or remove nodes to the cluster overrides any previous pending operations to modify the number of cache nodes in the cluster. For example, a request to remove 2 nodes would override a previous pending operation to remove 3 nodes. Similarly, a request to add 2 nodes would override a previous pending operation to remove 3 nodes and vice versa. As Memcached cache nodes may now be provisioned in different Availability Zones with flexible cache node placement, a request to add nodes does not automatically override a previous pending operation to add nodes. The customer can modify the previous pending operation to add more nodes or explicitly cancel the pending request and retry the new request. To cancel pending operations to modify the number of cache nodes in a cluster, use the ModifyCacheCluster request and set NumCacheNodes equal to the number of cache nodes currently in the cluster.
list
A list of cache node IDs to be removed. A node ID is a numeric identifier (0001, 0002, etc.). This parameter is only valid when NumCacheNodes is less than the existing number of cache nodes. The number of cache node IDs supplied in this parameter must match the difference between the existing number of cache nodes in the cluster or pending cache nodes, whichever is greater, and the value of NumCacheNodes in the request.
For example: If you have 3 active cache nodes, 7 pending cache nodes, and the number of cache nodes in this ModifyCacheCluster call is 5, you must list 2 (7 - 5) cache node IDs to remove.
(string) --
string
Specifies whether the new nodes in this Memcached cluster are all created in a single Availability Zone or created across multiple Availability Zones.
Valid values: single-az | cross-az .
This option is only supported for Memcached clusters.
Note
You cannot specify single-az if the Memcached cluster already has cache nodes in different Availability Zones. If cross-az is specified, existing Memcached nodes remain in their current Availability Zone.
Only newly created nodes are located in different Availability Zones.
list
The list of Availability Zones where the new Memcached cache nodes are created.
This parameter is only valid when NumCacheNodes in the request is greater than the sum of the number of active cache nodes and the number of cache nodes pending creation (which may be zero). The number of Availability Zones supplied in this list must match the cache nodes being added in this request.
This option is only supported on Memcached clusters.
Scenarios:
Scenario 1: You have 3 active nodes and wish to add 2 nodes. Specify NumCacheNodes=5 (3 + 2) and optionally specify two Availability Zones for the two new nodes.
Scenario 2: You have 3 active nodes and 2 nodes pending creation (from the scenario 1 call) and want to add 1 more node. Specify NumCacheNodes=6 ((3 + 2) + 1) and optionally specify an Availability Zone for the new node.
Scenario 3: You want to cancel all pending operations. Specify NumCacheNodes=3 to cancel all pending operations.
The Availability Zone placement of nodes pending creation cannot be modified. If you wish to cancel any nodes pending creation, add 0 nodes by setting NumCacheNodes to the number of current nodes.
If cross-az is specified, existing Memcached nodes remain in their current Availability Zone. Only newly created nodes can be located in different Availability Zones. For guidance on how to move existing Memcached nodes to different Availability Zones, see the Availability Zone Considerations section of Cache Node Considerations for Memcached .
Impact of new add/remove requests upon pending requests
Scenario-1
Pending Action: Delete
New Request: Delete
Result: The new delete, pending or immediate, replaces the pending delete.
Scenario-2
Pending Action: Delete
New Request: Create
Result: The new create, pending or immediate, replaces the pending delete.
Scenario-3
Pending Action: Create
New Request: Delete
Result: The new delete, pending or immediate, replaces the pending create.
Scenario-4
Pending Action: Create
New Request: Create
Result: The new create is added to the pending create.
Warning
Important: If the new create request is Apply Immediately - Yes , all creates are performed immediately. If the new create request is Apply Immediately - No , all creates are pending.
(string) --
list
A list of cache security group names to authorize on this cluster. This change is asynchronously applied as soon as possible.
You can use this parameter only with clusters that are created outside of an Amazon Virtual Private Cloud (Amazon VPC).
Constraints: Must contain no more than 255 alphanumeric characters. Must not be "Default".
(string) --
list
Specifies the VPC Security Groups associated with the cluster.
This parameter can be used only with clusters that are created in an Amazon Virtual Private Cloud (Amazon VPC).
(string) --
string
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
string
The Amazon Resource Name (ARN) of the Amazon SNS topic to which notifications are sent.
Note
The Amazon SNS topic owner must be same as the cluster owner.
string
The name of the cache parameter group to apply to this cluster. This change is asynchronously applied as soon as possible for parameters when the ApplyImmediately parameter is specified as true for this request.
string
The status of the Amazon SNS notification topic. Notifications are sent only if the status is active .
Valid values: active | inactive
boolean
If true , this parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible, regardless of the PreferredMaintenanceWindow setting for the cluster.
If false , changes to the cluster are applied on the next maintenance reboot, or the next failure reboot, whichever occurs first.
Warning
If you perform a ModifyCacheCluster before a pending modification is applied, the pending modification is replaced by the newer modification.
Valid values: true | false
Default: false
string
The upgraded version of the cache engine to be run on the cache nodes.
Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version ), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing cluster and create it anew with the earlier engine version.
boolean
This parameter is currently disabled.
integer
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Note
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
string
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.
string
A valid cache node type that you want to scale this cluster up to.
string
Reserved parameter. The password used to access a password protected server. This parameter must be specified with the auth-token-update parameter. Password constraints:
Must be only printable ASCII characters
Must be at least 16 characters and no more than 128 characters in length
Cannot contain any of the following characters: '/', '"', or '@', '%'
For more information, see AUTH password at AUTH .
string
Specifies the strategy to use to update the AUTH token. This parameter must be specified with the auth-token parameter. Possible values:
Rotate
Set
For more information, see Authenticating Users with Redis AUTH
dict
Response Syntax
{
'CacheCluster': {
'CacheClusterId': 'string',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'ClientDownloadLandingPage': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'CacheClusterStatus': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'PendingModifiedValues': {
'NumCacheNodes': 123,
'CacheNodeIdsToRemove': [
'string',
],
'EngineVersion': 'string',
'CacheNodeType': 'string',
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'NotificationConfiguration': {
'TopicArn': 'string',
'TopicStatus': 'string'
},
'CacheSecurityGroups': [
{
'CacheSecurityGroupName': 'string',
'Status': 'string'
},
],
'CacheParameterGroup': {
'CacheParameterGroupName': 'string',
'ParameterApplyStatus': 'string',
'CacheNodeIdsToReboot': [
'string',
]
},
'CacheSubnetGroupName': 'string',
'CacheNodes': [
{
'CacheNodeId': 'string',
'CacheNodeStatus': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'Endpoint': {
'Address': 'string',
'Port': 123
},
'ParameterGroupStatus': 'string',
'SourceCacheNodeId': 'string',
'CustomerAvailabilityZone': 'string'
},
],
'AutoMinorVersionUpgrade': True|False,
'SecurityGroups': [
{
'SecurityGroupId': 'string',
'Status': 'string'
},
],
'ReplicationGroupId': 'string',
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheCluster (dict) --
Contains all of the attributes of a specific cluster.
CacheClusterId (string) --
The user-supplied identifier of the cluster. This identifier is a unique key that identifies a cluster.
ConfigurationEndpoint (dict) --
Represents a Memcached cluster endpoint which, if Automatic Discovery is enabled on the cluster, can be used by an application to connect to any node in the cluster. The configuration endpoint will always have .cfg in it.
Example: mem-3.9dvc4r.cfg.usw2.cache.amazonaws.com:11211
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ClientDownloadLandingPage (string) --
The URL of the web page where you can download the latest ElastiCache client library.
CacheNodeType (string) --
The name of the compute and memory capacity node type for the cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) to be used for this cluster.
EngineVersion (string) --
The version of the cache engine that is used in this cluster.
CacheClusterStatus (string) --
The current state of this cluster, one of the following values: available , creating , deleted , deleting , incompatible-network , modifying , rebooting cluster nodes , restore-failed , or snapshotting .
NumCacheNodes (integer) --
The number of cache nodes in the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the cluster is located or "Multiple" if the cache nodes are located in different Availability Zones.
CacheClusterCreateTime (datetime) --
The date and time when the cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
PendingModifiedValues (dict) --
A group of settings that are applied to the cluster in the future, or that are currently being applied.
NumCacheNodes (integer) --
The new number of cache nodes for the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
CacheNodeIdsToRemove (list) --
A list of cache node IDs that are being removed (or will be removed) from the cluster. A node ID is a 4-digit numeric identifier (0001, 0002, etc.).
(string) --
EngineVersion (string) --
The new cache engine version that the cluster runs.
CacheNodeType (string) --
The cache node type that this cluster or replication group is scaled to.
AuthTokenStatus (string) --
The auth token status
NotificationConfiguration (dict) --
Describes a notification topic and its status. Notification topics are used for publishing ElastiCache events to subscribers using Amazon Simple Notification Service (SNS).
TopicArn (string) --
The Amazon Resource Name (ARN) that identifies the topic.
TopicStatus (string) --
The current state of the topic.
CacheSecurityGroups (list) --
A list of cache security group elements, composed of name and status sub-elements.
(dict) --
Represents a cluster's status within a particular cache security group.
CacheSecurityGroupName (string) --
The name of the cache security group.
Status (string) --
The membership status in the cache security group. The status changes when a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
CacheParameterGroup (dict) --
Status of the cache parameter group.
CacheParameterGroupName (string) --
The name of the cache parameter group.
ParameterApplyStatus (string) --
The status of parameter updates.
CacheNodeIdsToReboot (list) --
A list of the cache node IDs which need to be rebooted for parameter changes to be applied. A node ID is a numeric identifier (0001, 0002, etc.).
(string) --
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the cluster.
CacheNodes (list) --
A list of cache nodes that are members of the cluster.
(dict) --
Represents an individual cache node within a cluster. Each cache node runs its own instance of the cluster's protocol-compliant caching software - either Memcached or Redis.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
CacheNodeId (string) --
The cache node identifier. A node ID is a numeric identifier (0001, 0002, etc.). The combination of cluster ID and node ID uniquely identifies every cache node used in a customer's AWS account.
CacheNodeStatus (string) --
The current state of this cache node, one of the following values: available , creating , rebooting , or deleting .
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created.
Endpoint (dict) --
The hostname for connecting to this cache node.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ParameterGroupStatus (string) --
The status of the parameter group applied to this cache node.
SourceCacheNodeId (string) --
The ID of the primary node to which this read replica node is synchronized. If this field is empty, this node is not associated with a primary cluster.
CustomerAvailabilityZone (string) --
The Availability Zone where this node was created and now resides.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SecurityGroups (list) --
A list of VPC Security Groups associated with the cluster.
(dict) --
Represents a single cache security group and its status.
SecurityGroupId (string) --
The identifier of the cache security group.
Status (string) --
The status of the cache security group membership. The status changes whenever a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
ReplicationGroupId (string) --
The replication group to which this cluster belongs. If this field is empty, the cluster is not associated with any replication group.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.
Example: 05:00-09:00
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable at-rest encryption on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
ARN (string) --
The ARN (Amazon Resource Name) of the cache cluster.
{'CacheSubnetGroup': {'ARN': 'string'}}
Modifies an existing cache subnet group.
See also: AWS API Documentation
Request Syntax
client.modify_cache_subnet_group(
CacheSubnetGroupName='string',
CacheSubnetGroupDescription='string',
SubnetIds=[
'string',
]
)
string
[REQUIRED]
The name for the cache subnet group. This value is stored as a lowercase string.
Constraints: Must contain no more than 255 alphanumeric characters or hyphens.
Example: mysubnetgroup
string
A description of the cache subnet group.
list
The EC2 subnet IDs for the cache subnet group.
(string) --
dict
Response Syntax
{
'CacheSubnetGroup': {
'CacheSubnetGroupName': 'string',
'CacheSubnetGroupDescription': 'string',
'VpcId': 'string',
'Subnets': [
{
'SubnetIdentifier': 'string',
'SubnetAvailabilityZone': {
'Name': 'string'
}
},
],
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheSubnetGroup (dict) --
Represents the output of one of the following operations:
CreateCacheSubnetGroup
ModifyCacheSubnetGroup
CacheSubnetGroupName (string) --
The name of the cache subnet group.
CacheSubnetGroupDescription (string) --
The description of the cache subnet group.
VpcId (string) --
The Amazon Virtual Private Cloud identifier (VPC ID) of the cache subnet group.
Subnets (list) --
A list of subnets associated with the cache subnet group.
(dict) --
Represents the subnet associated with a cluster. This parameter refers to subnets defined in Amazon Virtual Private Cloud (Amazon VPC) and used with ElastiCache.
SubnetIdentifier (string) --
The unique identifier for the subnet.
SubnetAvailabilityZone (dict) --
The Availability Zone associated with the subnet.
Name (string) --
The name of the Availability Zone.
ARN (string) --
The ARN (Amazon Resource Name) of the cache subnet group.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Modifies the settings for a Global Datastore.
See also: AWS API Documentation
Request Syntax
client.modify_global_replication_group(
GlobalReplicationGroupId='string',
ApplyImmediately=True|False,
CacheNodeType='string',
EngineVersion='string',
GlobalReplicationGroupDescription='string',
AutomaticFailoverEnabled=True|False
)
string
[REQUIRED]
The name of the Global Datastore
boolean
[REQUIRED]
This parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible. Modifications to Global Replication Groups cannot be requested to be applied in PreferredMaintenceWindow.
string
A valid cache node type that you want to scale this Global Datastore to.
string
The upgraded version of the cache engine to be run on the clusters in the Global Datastore.
string
A description of the Global Datastore
boolean
Determines whether a read replica is automatically promoted to read/write primary if the existing primary encounters a failure.
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Modifies the settings for a replication group.
Scaling for Amazon ElastiCache for Redis (cluster mode enabled) in the ElastiCache User Guide
ModifyReplicationGroupShardConfiguration in the ElastiCache API Reference
Note
This operation is valid for Redis only.
See also: AWS API Documentation
Request Syntax
client.modify_replication_group(
ReplicationGroupId='string',
ReplicationGroupDescription='string',
PrimaryClusterId='string',
SnapshottingClusterId='string',
AutomaticFailoverEnabled=True|False,
NodeGroupId='string',
CacheSecurityGroupNames=[
'string',
],
SecurityGroupIds=[
'string',
],
PreferredMaintenanceWindow='string',
NotificationTopicArn='string',
CacheParameterGroupName='string',
NotificationTopicStatus='string',
ApplyImmediately=True|False,
EngineVersion='string',
AutoMinorVersionUpgrade=True|False,
SnapshotRetentionLimit=123,
SnapshotWindow='string',
CacheNodeType='string',
AuthToken='string',
AuthTokenUpdateStrategy='SET'|'ROTATE'
)
string
[REQUIRED]
The identifier of the replication group to modify.
string
A description for the replication group. Maximum length is 255 characters.
string
For replication groups with a single primary, if this parameter is specified, ElastiCache promotes the specified cluster in the specified replication group to the primary role. The nodes of all other clusters in the replication group are read replicas.
string
The cluster ID that is used as the daily snapshot source for the replication group. This parameter cannot be set for Redis (cluster mode enabled) replication groups.
boolean
Determines whether a read replica is automatically promoted to read/write primary if the existing primary encounters a failure.
Valid values: true | false
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
string
Deprecated. This parameter is not used.
list
A list of cache security group names to authorize for the clusters in this replication group. This change is asynchronously applied as soon as possible.
This parameter can be used only with replication group containing clusters running outside of an Amazon Virtual Private Cloud (Amazon VPC).
Constraints: Must contain no more than 255 alphanumeric characters. Must not be Default .
(string) --
list
Specifies the VPC Security Groups associated with the clusters in the replication group.
This parameter can be used only with replication group containing clusters running in an Amazon Virtual Private Cloud (Amazon VPC).
(string) --
string
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
string
The Amazon Resource Name (ARN) of the Amazon SNS topic to which notifications are sent.
Note
The Amazon SNS topic owner must be same as the replication group owner.
string
The name of the cache parameter group to apply to all of the clusters in this replication group. This change is asynchronously applied as soon as possible for parameters when the ApplyImmediately parameter is specified as true for this request.
string
The status of the Amazon SNS notification topic for the replication group. Notifications are sent only if the status is active .
Valid values: active | inactive
boolean
If true , this parameter causes the modifications in this request and any pending modifications to be applied, asynchronously and as soon as possible, regardless of the PreferredMaintenanceWindow setting for the replication group.
If false , changes to the nodes in the replication group are applied on the next maintenance reboot, or the next failure reboot, whichever occurs first.
Valid values: true | false
Default: false
string
The upgraded version of the cache engine to be run on the clusters in the replication group.
Important: You can upgrade to a newer engine version (see Selecting a Cache Engine and Version ), but you cannot downgrade to an earlier engine version. If you want to use an earlier engine version, you must delete the existing replication group and create it anew with the earlier engine version.
boolean
This parameter is currently disabled.
integer
The number of days for which ElastiCache retains automatic node group (shard) snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Important If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
string
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of the node group (shard) specified by SnapshottingClusterId .
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
string
A valid cache node type that you want to scale this replication group to.
string
Reserved parameter. The password used to access a password protected server. This parameter must be specified with the auth-token-update-strategy parameter. Password constraints:
Must be only printable ASCII characters
Must be at least 16 characters and no more than 128 characters in length
Cannot contain any of the following characters: '/', '"', or '@', '%'
For more information, see AUTH password at AUTH .
string
Specifies the strategy to use to update the AUTH token. This parameter must be specified with the auth-token parameter. Possible values:
Rotate
Set
For more information, see Authenticating Users with Redis AUTH
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Modifies a replication group's shards (node groups) by allowing you to add shards, remove shards, or rebalance the keyspaces among exisiting shards.
See also: AWS API Documentation
Request Syntax
client.modify_replication_group_shard_configuration(
ReplicationGroupId='string',
NodeGroupCount=123,
ApplyImmediately=True|False,
ReshardingConfiguration=[
{
'NodeGroupId': 'string',
'PreferredAvailabilityZones': [
'string',
]
},
],
NodeGroupsToRemove=[
'string',
],
NodeGroupsToRetain=[
'string',
]
)
string
[REQUIRED]
The name of the Redis (cluster mode enabled) cluster (replication group) on which the shards are to be configured.
integer
[REQUIRED]
The number of node groups (shards) that results from the modification of the shard configuration.
boolean
[REQUIRED]
Indicates that the shard reconfiguration process begins immediately. At present, the only permitted value for this parameter is true .
Value: true
list
Specifies the preferred availability zones for each node group in the cluster. If the value of NodeGroupCount is greater than the current number of node groups (shards), you can use this parameter to specify the preferred availability zones of the cluster's shards. If you omit this parameter ElastiCache selects availability zones for you.
You can specify this parameter only if the value of NodeGroupCount is greater than the current number of node groups (shards).
(dict) --
A list of PreferredAvailabilityZones objects that specifies the configuration of a node group in the resharded cluster.
NodeGroupId (string) --
Either the ElastiCache for Redis supplied 4-digit id or a user supplied id for the node group these configuration values apply to.
PreferredAvailabilityZones (list) --
A list of preferred availability zones for the nodes in this cluster.
(string) --
list
If the value of NodeGroupCount is less than the current number of node groups (shards), then either NodeGroupsToRemove or NodeGroupsToRetain is required. NodeGroupsToRemove is a list of NodeGroupId s to remove from the cluster.
ElastiCache for Redis will attempt to remove all node groups listed by NodeGroupsToRemove from the cluster.
(string) --
list
If the value of NodeGroupCount is less than the current number of node groups (shards), then either NodeGroupsToRemove or NodeGroupsToRetain is required. NodeGroupsToRetain is a list of NodeGroupId s to retain in the cluster.
ElastiCache for Redis will attempt to remove all node groups except those listed by NodeGroupsToRetain from the cluster.
(string) --
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'GlobalReplicationGroup': {'ARN': 'string'}}
Redistribute slots to ensure uniform distribution across existing shards in the cluster.
See also: AWS API Documentation
Request Syntax
client.rebalance_slots_in_global_replication_group(
GlobalReplicationGroupId='string',
ApplyImmediately=True|False
)
string
[REQUIRED]
The name of the Global Datastore
boolean
[REQUIRED]
If True , redistribution is applied immediately.
dict
Response Syntax
{
'GlobalReplicationGroup': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupDescription': 'string',
'Status': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'Members': [
{
'ReplicationGroupId': 'string',
'ReplicationGroupRegion': 'string',
'Role': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'Status': 'string'
},
],
'ClusterEnabled': True|False,
'GlobalNodeGroups': [
{
'GlobalNodeGroupId': 'string',
'Slots': 'string'
},
],
'AuthTokenEnabled': True|False,
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
GlobalReplicationGroup (dict) --
Consists of a primary cluster that accepts writes and an associated secondary cluster that resides in a different AWS region. The secondary cluster accepts only reads. The primary cluster automatically replicates updates to the secondary cluster.
The GlobalReplicationGroupIdSuffix represents the name of the Global Datastore, which is what you use to associate a secondary cluster.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupDescription (string) --
The optional description of the Global Datastore
Status (string) --
The status of the Global Datastore
CacheNodeType (string) --
The cache node type of the Global Datastore
Engine (string) --
The Elasticache engine. For Redis only.
EngineVersion (string) --
The Elasticache Redis engine version. For preview, it is Redis version 5.0.5 only.
Members (list) --
The replication groups that comprise the Global Datastore.
(dict) --
A member of a Global Datastore. It contains the Replication Group Id, the AWS region and the role of the replication group.
ReplicationGroupId (string) --
The replication group id of the Global Datastore member.
ReplicationGroupRegion (string) --
The AWS region of the Global Datastore member.
Role (string) --
Indicates the role of the replication group, primary or secondary.
AutomaticFailover (string) --
Indicates whether automatic failover is enabled for the replication group.
Status (string) --
The status of the membership of the replication group.
ClusterEnabled (boolean) --
A flag that indicates whether the Global Datastore is cluster enabled.
GlobalNodeGroups (list) --
Indicates the slot configuration and global identifier for each slice group.
(dict) --
Indicates the slot configuration and global identifier for a slice group.
GlobalNodeGroupId (string) --
The name of the global node group
Slots (string) --
The keyspace for this node group
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true. You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the replication group is created. To enable encryption at rest on a replication group you must set AtRestEncryptionEnabled to true when you create the replication group.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
ARN (string) --
The ARN (Amazon Resource Name) of the global replication group.
{'CacheCluster': {'ARN': 'string'}}
Reboots some, or all, of the cache nodes within a provisioned cluster. This operation applies any modified cache parameter groups to the cluster. The reboot operation takes place as soon as possible, and results in a momentary outage to the cluster. During the reboot, the cluster status is set to REBOOTING.
The reboot causes the contents of the cache (for each cache node being rebooted) to be lost.
When the reboot is complete, a cluster event is created.
Rebooting a cluster is currently supported on Memcached and Redis (cluster mode disabled) clusters. Rebooting is not supported on Redis (cluster mode enabled) clusters.
If you make changes to parameters that require a Redis (cluster mode enabled) cluster reboot for the changes to be applied, see Rebooting a Cluster for an alternate process.
See also: AWS API Documentation
Request Syntax
client.reboot_cache_cluster(
CacheClusterId='string',
CacheNodeIdsToReboot=[
'string',
]
)
string
[REQUIRED]
The cluster identifier. This parameter is stored as a lowercase string.
list
[REQUIRED]
A list of cache node IDs to reboot. A node ID is a numeric identifier (0001, 0002, etc.). To reboot an entire cluster, specify all of the cache node IDs.
(string) --
dict
Response Syntax
{
'CacheCluster': {
'CacheClusterId': 'string',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'ClientDownloadLandingPage': 'string',
'CacheNodeType': 'string',
'Engine': 'string',
'EngineVersion': 'string',
'CacheClusterStatus': 'string',
'NumCacheNodes': 123,
'PreferredAvailabilityZone': 'string',
'CacheClusterCreateTime': datetime(2015, 1, 1),
'PreferredMaintenanceWindow': 'string',
'PendingModifiedValues': {
'NumCacheNodes': 123,
'CacheNodeIdsToRemove': [
'string',
],
'EngineVersion': 'string',
'CacheNodeType': 'string',
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'NotificationConfiguration': {
'TopicArn': 'string',
'TopicStatus': 'string'
},
'CacheSecurityGroups': [
{
'CacheSecurityGroupName': 'string',
'Status': 'string'
},
],
'CacheParameterGroup': {
'CacheParameterGroupName': 'string',
'ParameterApplyStatus': 'string',
'CacheNodeIdsToReboot': [
'string',
]
},
'CacheSubnetGroupName': 'string',
'CacheNodes': [
{
'CacheNodeId': 'string',
'CacheNodeStatus': 'string',
'CacheNodeCreateTime': datetime(2015, 1, 1),
'Endpoint': {
'Address': 'string',
'Port': 123
},
'ParameterGroupStatus': 'string',
'SourceCacheNodeId': 'string',
'CustomerAvailabilityZone': 'string'
},
],
'AutoMinorVersionUpgrade': True|False,
'SecurityGroups': [
{
'SecurityGroupId': 'string',
'Status': 'string'
},
],
'ReplicationGroupId': 'string',
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheCluster (dict) --
Contains all of the attributes of a specific cluster.
CacheClusterId (string) --
The user-supplied identifier of the cluster. This identifier is a unique key that identifies a cluster.
ConfigurationEndpoint (dict) --
Represents a Memcached cluster endpoint which, if Automatic Discovery is enabled on the cluster, can be used by an application to connect to any node in the cluster. The configuration endpoint will always have .cfg in it.
Example: mem-3.9dvc4r.cfg.usw2.cache.amazonaws.com:11211
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ClientDownloadLandingPage (string) --
The URL of the web page where you can download the latest ElastiCache client library.
CacheNodeType (string) --
The name of the compute and memory capacity node type for the cluster.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
Engine (string) --
The name of the cache engine (memcached or redis ) to be used for this cluster.
EngineVersion (string) --
The version of the cache engine that is used in this cluster.
CacheClusterStatus (string) --
The current state of this cluster, one of the following values: available , creating , deleted , deleting , incompatible-network , modifying , rebooting cluster nodes , restore-failed , or snapshotting .
NumCacheNodes (integer) --
The number of cache nodes in the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the cluster is located or "Multiple" if the cache nodes are located in different Availability Zones.
CacheClusterCreateTime (datetime) --
The date and time when the cluster was created.
PreferredMaintenanceWindow (string) --
Specifies the weekly time range during which maintenance on the cluster is performed. It is specified as a range in the format ddd:hh24:mi-ddd:hh24:mi (24H Clock UTC). The minimum maintenance window is a 60 minute period.
Valid values for ddd are:
sun
mon
tue
wed
thu
fri
sat
Example: sun:23:00-mon:01:30
PendingModifiedValues (dict) --
A group of settings that are applied to the cluster in the future, or that are currently being applied.
NumCacheNodes (integer) --
The new number of cache nodes for the cluster.
For clusters running Redis, this value must be 1. For clusters running Memcached, this value must be between 1 and 20.
CacheNodeIdsToRemove (list) --
A list of cache node IDs that are being removed (or will be removed) from the cluster. A node ID is a 4-digit numeric identifier (0001, 0002, etc.).
(string) --
EngineVersion (string) --
The new cache engine version that the cluster runs.
CacheNodeType (string) --
The cache node type that this cluster or replication group is scaled to.
AuthTokenStatus (string) --
The auth token status
NotificationConfiguration (dict) --
Describes a notification topic and its status. Notification topics are used for publishing ElastiCache events to subscribers using Amazon Simple Notification Service (SNS).
TopicArn (string) --
The Amazon Resource Name (ARN) that identifies the topic.
TopicStatus (string) --
The current state of the topic.
CacheSecurityGroups (list) --
A list of cache security group elements, composed of name and status sub-elements.
(dict) --
Represents a cluster's status within a particular cache security group.
CacheSecurityGroupName (string) --
The name of the cache security group.
Status (string) --
The membership status in the cache security group. The status changes when a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
CacheParameterGroup (dict) --
Status of the cache parameter group.
CacheParameterGroupName (string) --
The name of the cache parameter group.
ParameterApplyStatus (string) --
The status of parameter updates.
CacheNodeIdsToReboot (list) --
A list of the cache node IDs which need to be rebooted for parameter changes to be applied. A node ID is a numeric identifier (0001, 0002, etc.).
(string) --
CacheSubnetGroupName (string) --
The name of the cache subnet group associated with the cluster.
CacheNodes (list) --
A list of cache nodes that are members of the cluster.
(dict) --
Represents an individual cache node within a cluster. Each cache node runs its own instance of the cluster's protocol-compliant caching software - either Memcached or Redis.
The following node types are supported by ElastiCache. Generally speaking, the current generation types provide more memory and computational power at lower cost when compared to their equivalent previous generation counterparts.
General purpose:
Current generation: M5 node types: cache.m5.large , cache.m5.xlarge , cache.m5.2xlarge , cache.m5.4xlarge , cache.m5.12xlarge , cache.m5.24xlarge M4 node types: cache.m4.large , cache.m4.xlarge , cache.m4.2xlarge , cache.m4.4xlarge , cache.m4.10xlarge T3 node types: cache.t3.micro , cache.t3.small , cache.t3.medium T2 node types: cache.t2.micro , cache.t2.small , cache.t2.medium
Previous generation: (not recommended) T1 node types: cache.t1.micro M1 node types: cache.m1.small , cache.m1.medium , cache.m1.large , cache.m1.xlarge M3 node types: cache.m3.medium , cache.m3.large , cache.m3.xlarge , cache.m3.2xlarge
Compute optimized:
Previous generation: (not recommended) C1 node types: cache.c1.xlarge
Memory optimized:
Current generation: R5 node types: cache.r5.large , cache.r5.xlarge , cache.r5.2xlarge , cache.r5.4xlarge , cache.r5.12xlarge , cache.r5.24xlarge R4 node types: cache.r4.large , cache.r4.xlarge , cache.r4.2xlarge , cache.r4.4xlarge , cache.r4.8xlarge , cache.r4.16xlarge
Previous generation: (not recommended) M2 node types: cache.m2.xlarge , cache.m2.2xlarge , cache.m2.4xlarge R3 node types: cache.r3.large , cache.r3.xlarge , cache.r3.2xlarge , cache.r3.4xlarge , cache.r3.8xlarge
Additional node type info
All current generation instance types are created in Amazon VPC by default.
Redis append-only files (AOF) are not supported for T1 or T2 instances.
Redis Multi-AZ with automatic failover is not supported on T1 instances.
Redis configuration variables appendonly and appendfsync are not supported on Redis version 2.8.22 and later.
CacheNodeId (string) --
The cache node identifier. A node ID is a numeric identifier (0001, 0002, etc.). The combination of cluster ID and node ID uniquely identifies every cache node used in a customer's AWS account.
CacheNodeStatus (string) --
The current state of this cache node, one of the following values: available , creating , rebooting , or deleting .
CacheNodeCreateTime (datetime) --
The date and time when the cache node was created.
Endpoint (dict) --
The hostname for connecting to this cache node.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ParameterGroupStatus (string) --
The status of the parameter group applied to this cache node.
SourceCacheNodeId (string) --
The ID of the primary node to which this read replica node is synchronized. If this field is empty, this node is not associated with a primary cluster.
CustomerAvailabilityZone (string) --
The Availability Zone where this node was created and now resides.
AutoMinorVersionUpgrade (boolean) --
This parameter is currently disabled.
SecurityGroups (list) --
A list of VPC Security Groups associated with the cluster.
(dict) --
Represents a single cache security group and its status.
SecurityGroupId (string) --
The identifier of the cache security group.
Status (string) --
The status of the cache security group membership. The status changes whenever a cache security group is modified, or when the cache security groups assigned to a cluster are modified.
ReplicationGroupId (string) --
The replication group to which this cluster belongs. If this field is empty, the cluster is not associated with any replication group.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your cluster.
Example: 05:00-09:00
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable at-rest encryption on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
ARN (string) --
The ARN (Amazon Resource Name) of the cache cluster.
{'CacheSecurityGroup': {'ARN': 'string'}}
Revokes ingress from a cache security group. Use this operation to disallow access from an Amazon EC2 security group that had been previously authorized.
See also: AWS API Documentation
Request Syntax
client.revoke_cache_security_group_ingress(
CacheSecurityGroupName='string',
EC2SecurityGroupName='string',
EC2SecurityGroupOwnerId='string'
)
string
[REQUIRED]
The name of the cache security group to revoke ingress from.
string
[REQUIRED]
The name of the Amazon EC2 security group to revoke access from.
string
[REQUIRED]
The AWS account number of the Amazon EC2 security group owner. Note that this is not the same thing as an AWS access key ID - you must provide a valid AWS account number for this parameter.
dict
Response Syntax
{
'CacheSecurityGroup': {
'OwnerId': 'string',
'CacheSecurityGroupName': 'string',
'Description': 'string',
'EC2SecurityGroups': [
{
'Status': 'string',
'EC2SecurityGroupName': 'string',
'EC2SecurityGroupOwnerId': 'string'
},
],
'ARN': 'string'
}
}
Response Structure
(dict) --
CacheSecurityGroup (dict) --
Represents the output of one of the following operations:
AuthorizeCacheSecurityGroupIngress
CreateCacheSecurityGroup
RevokeCacheSecurityGroupIngress
OwnerId (string) --
The AWS account ID of the cache security group owner.
CacheSecurityGroupName (string) --
The name of the cache security group.
Description (string) --
The description of the cache security group.
EC2SecurityGroups (list) --
A list of Amazon EC2 security groups that are associated with this cache security group.
(dict) --
Provides ownership and status information for an Amazon EC2 security group.
Status (string) --
The status of the Amazon EC2 security group.
EC2SecurityGroupName (string) --
The name of the Amazon EC2 security group.
EC2SecurityGroupOwnerId (string) --
The AWS account ID of the Amazon EC2 security group owner.
ARN (string) --
The ARN (Amazon Resource Name) of the cache security group.
{'ReplicationGroup': {'ARN': 'string'}}
Start the migration of data.
See also: AWS API Documentation
Request Syntax
client.start_migration(
ReplicationGroupId='string',
CustomerNodeEndpointList=[
{
'Address': 'string',
'Port': 123
},
]
)
string
[REQUIRED]
The ID of the replication group to which data should be migrated.
list
[REQUIRED]
List of endpoints from which data should be migrated. For Redis (cluster mode disabled), list should have only one element.
(dict) --
The endpoint from which data should be migrated.
Address (string) --
The address of the node endpoint
Port (integer) --
The port of the node endpoint
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.
{'ReplicationGroup': {'ARN': 'string'}}
Represents the input of a TestFailover operation which test automatic failover on a specified node group (called shard in the console) in a replication group (called cluster in the console).
Note the following
A customer can use this operation to test automatic failover on up to 5 shards (called node groups in the ElastiCache API and AWS CLI) in any rolling 24-hour period.
If calling this operation on shards in different clusters (called replication groups in the API and CLI), the calls can be made concurrently.
If calling this operation multiple times on different shards in the same Redis (cluster mode enabled) replication group, the first node replacement must complete before a subsequent call can be made.
To determine whether the node replacement is complete you can check Events using the Amazon ElastiCache console, the AWS CLI, or the ElastiCache API. Look for the following automatic failover related events, listed here in order of occurrance:
Replication group message: Test Failover API called for node group <node-group-id>
Cache cluster message: Failover from master node <primary-node-id> to replica node <node-id> completed
Replication group message: Failover from master node <primary-node-id> to replica node <node-id> completed
Cache cluster message: Recovering cache nodes <node-id>
Cache cluster message: Finished recovery for cache nodes <node-id>
For more information see:
Viewing ElastiCache Events in the ElastiCache User Guide
DescribeEvents in the ElastiCache API Reference
Also see, Testing Multi-AZ with Automatic Failover in the ElastiCache User Guide .
See also: AWS API Documentation
Request Syntax
client.test_failover(
ReplicationGroupId='string',
NodeGroupId='string'
)
string
[REQUIRED]
The name of the replication group (console: cluster) whose automatic failover is being tested by this operation.
string
[REQUIRED]
The name of the node group (called shard in the console) in this replication group on which automatic failover is to be tested. You may test automatic failover on up to 5 node groups in any rolling 24-hour period.
dict
Response Syntax
{
'ReplicationGroup': {
'ReplicationGroupId': 'string',
'Description': 'string',
'GlobalReplicationGroupInfo': {
'GlobalReplicationGroupId': 'string',
'GlobalReplicationGroupMemberRole': 'string'
},
'Status': 'string',
'PendingModifiedValues': {
'PrimaryClusterId': 'string',
'AutomaticFailoverStatus': 'enabled'|'disabled',
'Resharding': {
'SlotMigration': {
'ProgressPercentage': 123.0
}
},
'AuthTokenStatus': 'SETTING'|'ROTATING'
},
'MemberClusters': [
'string',
],
'NodeGroups': [
{
'NodeGroupId': 'string',
'Status': 'string',
'PrimaryEndpoint': {
'Address': 'string',
'Port': 123
},
'ReaderEndpoint': {
'Address': 'string',
'Port': 123
},
'Slots': 'string',
'NodeGroupMembers': [
{
'CacheClusterId': 'string',
'CacheNodeId': 'string',
'ReadEndpoint': {
'Address': 'string',
'Port': 123
},
'PreferredAvailabilityZone': 'string',
'CurrentRole': 'string'
},
]
},
],
'SnapshottingClusterId': 'string',
'AutomaticFailover': 'enabled'|'disabled'|'enabling'|'disabling',
'ConfigurationEndpoint': {
'Address': 'string',
'Port': 123
},
'SnapshotRetentionLimit': 123,
'SnapshotWindow': 'string',
'ClusterEnabled': True|False,
'CacheNodeType': 'string',
'AuthTokenEnabled': True|False,
'AuthTokenLastModifiedDate': datetime(2015, 1, 1),
'TransitEncryptionEnabled': True|False,
'AtRestEncryptionEnabled': True|False,
'KmsKeyId': 'string',
'ARN': 'string'
}
}
Response Structure
(dict) --
ReplicationGroup (dict) --
Contains all of the attributes of a specific Redis replication group.
ReplicationGroupId (string) --
The identifier for the replication group.
Description (string) --
The user supplied description of the replication group.
GlobalReplicationGroupInfo (dict) --
The name of the Global Datastore and role of this replication group in the Global Datastore.
GlobalReplicationGroupId (string) --
The name of the Global Datastore
GlobalReplicationGroupMemberRole (string) --
The role of the replication group in a Global Datastore. Can be primary or secondary.
Status (string) --
The current state of this replication group - creating , available , modifying , deleting , create-failed , snapshotting .
PendingModifiedValues (dict) --
A group of settings to be applied to the replication group, either immediately or during the next maintenance window.
PrimaryClusterId (string) --
The primary cluster ID that is applied immediately (if --apply-immediately was specified), or during the next maintenance window.
AutomaticFailoverStatus (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
Resharding (dict) --
The status of an online resharding operation.
SlotMigration (dict) --
Represents the progress of an online resharding operation.
ProgressPercentage (float) --
The percentage of the slot migration that is complete.
AuthTokenStatus (string) --
The auth token status
MemberClusters (list) --
The names of all the cache clusters that are part of this replication group.
(string) --
NodeGroups (list) --
A list of node groups in this replication group. For Redis (cluster mode disabled) replication groups, this is a single-element list. For Redis (cluster mode enabled) replication groups, the list contains an entry for each node group (shard).
(dict) --
Represents a collection of cache nodes in a replication group. One node in the node group is the read/write primary node. All the other nodes are read-only Replica nodes.
NodeGroupId (string) --
The identifier for the node group (shard). A Redis (cluster mode disabled) replication group contains only 1 node group; therefore, the node group ID is 0001. A Redis (cluster mode enabled) replication group contains 1 to 90 node groups numbered 0001 to 0090. Optionally, the user can provide the id for a node group.
Status (string) --
The current state of this replication group - creating , available , etc.
PrimaryEndpoint (dict) --
The endpoint of the primary node in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
ReaderEndpoint (dict) --
The endpoint of the replica nodes in this node group (shard).
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
Slots (string) --
The keyspace for this node group (shard).
NodeGroupMembers (list) --
A list containing information about individual nodes within the node group (shard).
(dict) --
Represents a single node within a node group (shard).
CacheClusterId (string) --
The ID of the cluster to which the node belongs.
CacheNodeId (string) --
The ID of the node within its cluster. A node ID is a numeric identifier (0001, 0002, etc.).
ReadEndpoint (dict) --
The information required for client programs to connect to a node for read operations. The read endpoint is only applicable on Redis (cluster mode disabled) clusters.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
PreferredAvailabilityZone (string) --
The name of the Availability Zone in which the node is located.
CurrentRole (string) --
The role that is currently assigned to the node - primary or replica . This member is only applicable for Redis (cluster mode disabled) replication groups.
SnapshottingClusterId (string) --
The cluster ID that is used as the daily snapshot source for the replication group.
AutomaticFailover (string) --
Indicates the status of Multi-AZ with automatic failover for this Redis replication group.
Amazon ElastiCache for Redis does not support Multi-AZ with automatic failover on:
Redis versions earlier than 2.8.6.
Redis (cluster mode disabled): T1 node types.
Redis (cluster mode enabled): T1 node types.
ConfigurationEndpoint (dict) --
The configuration endpoint for this replication group. Use the configuration endpoint to connect to this replication group.
Address (string) --
The DNS hostname of the cache node.
Port (integer) --
The port number that the cache engine is listening on.
SnapshotRetentionLimit (integer) --
The number of days for which ElastiCache retains automatic cluster snapshots before deleting them. For example, if you set SnapshotRetentionLimit to 5, a snapshot that was taken today is retained for 5 days before being deleted.
Warning
If the value of SnapshotRetentionLimit is set to zero (0), backups are turned off.
SnapshotWindow (string) --
The daily time range (in UTC) during which ElastiCache begins taking a daily snapshot of your node group (shard).
Example: 05:00-09:00
If you do not specify this parameter, ElastiCache automatically chooses an appropriate time range.
Note
This parameter is only valid if the Engine parameter is redis .
ClusterEnabled (boolean) --
A flag indicating whether or not this replication group is cluster enabled; i.e., whether its data can be partitioned across multiple shards (API/CLI: node groups).
Valid values: true | false
CacheNodeType (string) --
The name of the compute and memory capacity node type for each node in the replication group.
AuthTokenEnabled (boolean) --
A flag that enables using an AuthToken (password) when issuing Redis commands.
Default: false
AuthTokenLastModifiedDate (datetime) --
The date the auth token was last modified
TransitEncryptionEnabled (boolean) --
A flag that enables in-transit encryption when set to true .
You cannot modify the value of TransitEncryptionEnabled after the cluster is created. To enable in-transit encryption on a cluster you must set TransitEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
AtRestEncryptionEnabled (boolean) --
A flag that enables encryption at-rest when set to true .
You cannot modify the value of AtRestEncryptionEnabled after the cluster is created. To enable encryption at-rest on a cluster you must set AtRestEncryptionEnabled to true when you create a cluster.
Required: Only available when creating a replication group in an Amazon VPC using redis version 3.2.6 , 4.x or later.
Default: false
KmsKeyId (string) --
The ID of the KMS key used to encrypt the disk in the cluster.
ARN (string) --
The ARN (Amazon Resource Name) of the replication group.