2018/11/28 - AWS Cloud Map - 2 new 5 updated api methods
Changes AWS Cloud Map lets you define friendly names for your cloud resources so that your applications can quickly and dynamically discover them. When a resource becomes available (for example, an Amazon EC2 instance running a web server), you can register a Cloud Map service instance. Then your application can discover service instances by submitting DNS queries or API calls.
Creates an HTTP namespace. Service instances that you register using an HTTP namespace can be discovered using a DiscoverInstances request but can't be discovered using DNS.
For the current limit on the number of namespaces that you can create using the same AWS account, see AWS Cloud Map Limits in the AWS Cloud Map Developer Guide .
See also: AWS API Documentation
Request Syntax
client.create_http_namespace(
Name='string',
CreatorRequestId='string',
Description='string'
)
string
[REQUIRED]
The name that you want to assign to this namespace.
string
A unique string that identifies the request and that allows failed CreateHttpNamespace requests to be retried without the risk of executing the operation twice. CreatorRequestId can be any unique string, for example, a date/time stamp.
This field is autopopulated if not provided.
string
A description for the namespace.
dict
Response Syntax
{
'OperationId': 'string'
}
Response Structure
(dict) --
OperationId (string) --
A value that you can use to determine whether the request completed successfully. To get the status of the operation, see GetOperation .
Discovers registered instances for a specified namespace and service.
See also: AWS API Documentation
Request Syntax
client.discover_instances(
NamespaceName='string',
ServiceName='string',
MaxResults=123,
QueryParameters={
'string': 'string'
},
HealthStatus='HEALTHY'|'UNHEALTHY'|'ALL'
)
string
[REQUIRED]
The name of the namespace that you specified when you registered the instance.
string
[REQUIRED]
The name of the service that you specified when you registered the instance.
integer
The maximum number of instances that you want Cloud Map to return in the response to a DiscoverInstances request. If you don't specify a value for MaxResults , Cloud Map returns up to 100 instances.
dict
A string map that contains attributes with values that you can use to filter instances by any custom attribute that you specified when you registered the instance. Only instances that match all the specified key/value pairs will be returned.
(string) --
(string) --
string
The health status of the instances that you want to discover.
dict
Response Syntax
{
'Instances': [
{
'InstanceId': 'string',
'NamespaceName': 'string',
'ServiceName': 'string',
'HealthStatus': 'HEALTHY'|'UNHEALTHY'|'UNKNOWN',
'Attributes': {
'string': 'string'
}
},
]
}
Response Structure
(dict) --
Instances (list) --
A complex type that contains one HttpInstanceSummary for each registered instance.
(dict) --
In a response to a DiscoverInstance request, HttpInstanceSummary contains information about one instance that matches the values that you specified in the request.
InstanceId (string) --
The ID of an instance that matches the values that you specified in the request.
NamespaceName (string) --
The name of the namespace that you specified when you registered the instance.
ServiceName (string) --
The name of the service that you specified when you registered the instance.
HealthStatus (string) --
If you configured health checking in the service, the current health status of the service instance.
Attributes (dict) --
If you included any attributes when you registered the instance, the values of those attributes.
(string) --
(string) --
{'NamespaceId': 'string'}
Response {'Service': {'NamespaceId': 'string'}}
Creates a service, which defines the configuration for the following entities:
For public and private DNS namespaces, one of the following combinations of DNS records in Amazon Route 53:
A
AAAA
A and AAAA
SRV
CNAME
Optionally, a health check
After you create the service, you can submit a RegisterInstance request, and AWS Cloud Map uses the values in the configuration to create the specified entities.
For the current limit on the number of instances that you can register using the same namespace and using the same service, see AWS Cloud Map Limits in the AWS Cloud Map Developer Guide .
See also: AWS API Documentation
Request Syntax
client.create_service(
Name='string',
NamespaceId='string',
CreatorRequestId='string',
Description='string',
DnsConfig={
'NamespaceId': 'string',
'RoutingPolicy': 'MULTIVALUE'|'WEIGHTED',
'DnsRecords': [
{
'Type': 'SRV'|'A'|'AAAA'|'CNAME',
'TTL': 123
},
]
},
HealthCheckConfig={
'Type': 'HTTP'|'HTTPS'|'TCP',
'ResourcePath': 'string',
'FailureThreshold': 123
},
HealthCheckCustomConfig={
'FailureThreshold': 123
}
)
string
[REQUIRED]
The name that you want to assign to the service.
string
The ID of the namespace that you want to use to create the service.
string
A unique string that identifies the request and that allows failed CreateService requests to be retried without the risk of executing the operation twice. CreatorRequestId can be any unique string, for example, a date/time stamp.
This field is autopopulated if not provided.
string
A description for the service.
dict
A complex type that contains information about the Amazon Route 53 records that you want AWS Cloud Map to create when you register an instance.
NamespaceId (string) --
The ID of the namespace to use for DNS configuration.
RoutingPolicy (string) --
The routing policy that you want to apply to all Route 53 DNS records that AWS Cloud Map creates when you register an instance and specify this service.
Note
If you want to use this service to register instances that create alias records, specify WEIGHTED for the routing policy.
You can specify the following values:
MULTIVALUE
If you define a health check for the service and the health check is healthy, Route 53 returns the applicable value for up to eight instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with IP addresses for up to eight healthy instances. If fewer than eight instances are healthy, Route 53 responds to every DNS query with the IP addresses for all of the healthy instances.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the values for up to eight instances.
For more information about the multivalue routing policy, see Multivalue Answer Routing in the Route 53 Developer Guide .
WEIGHTED
Route 53 returns the applicable value from one randomly selected instance from among the instances that you registered using the same service. Currently, all records have the same weight, so you can't route more or less traffic to any instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with the IP address for one randomly selected instance from among the healthy instances. If no instances are healthy, Route 53 responds to DNS queries as if all of the instances were healthy.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the applicable value for one randomly selected instance.
For more information about the weighted routing policy, see Weighted Routing in the Route 53 Developer Guide .
DnsRecords (list) -- [REQUIRED]
An array that contains one DnsRecord object for each Route 53 DNS record that you want AWS Cloud Map to create when you register an instance.
(dict) --
A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
Type (string) -- [REQUIRED]
The type of the resource, which indicates the type of value that Route 53 returns in response to DNS queries.
Note the following:
A, AAAA, and SRV records: You can specify settings for a maximum of one A, one AAAA, and one SRV record. You can specify them in any combination.
CNAME records: If you specify CNAME for Type , you can't define any other records. This is a limitation of DNS: you can't create a CNAME record and any other type of record that has the same name as a CNAME record.
Alias records: If you want AWS Cloud Map to create a Route 53 alias record when you register an instance, specify A or AAAA for Type .
All records: You specify settings other than TTL and Type when you register an instance.
The following values are supported:
A
Route 53 returns the IP address of the resource in IPv4 format, such as 192.0.2.44.
AAAA
Route 53 returns the IP address of the resource in IPv6 format, such as 2001:0db8:85a3:0000:0000:abcd:0001:2345.
CNAME
Route 53 returns the domain name of the resource, such as www.example.com. Note the following:
You specify the domain name that you want to route traffic to when you register an instance. For more information, see RegisterInstanceRequest$Attributes .
You must specify WEIGHTED for the value of RoutingPolicy .
You can't specify both CNAME for Type and settings for HealthCheckConfig . If you do, the request will fail with an InvalidInput error.
SRV
Route 53 returns the value for an SRV record. The value for an SRV record uses the following values:
priority weight port service-hostname
Note the following about the values:
The values of priority and weight are both set to 1 and can't be changed.
The value of port comes from the value that you specify for the AWS_INSTANCE_PORT attribute when you submit a RegisterInstance request.
The value of service-hostname is a concatenation of the following values:
The value that you specify for InstanceId when you register an instance.
The name of the service.
The name of the namespace.
For example, if the value of InstanceId is test , the name of the service is backend , and the name of the namespace is example.com , the value of service-hostname is:
test.backend.example.com
If you specify settings for an SRV record and if you specify values for AWS_INSTANCE_IPV4 , AWS_INSTANCE_IPV6 , or both in the RegisterInstance request, AWS Cloud Map automatically creates A and/or AAAA records that have the same name as the value of service-hostname in the SRV record. You can ignore these records.
TTL (integer) -- [REQUIRED]
The amount of time, in seconds, that you want DNS resolvers to cache the settings for this record.
Note
Alias records don't include a TTL because Route 53 uses the TTL for the AWS resource that an alias record routes traffic to. If you include the AWS_ALIAS_DNS_NAME attribute when you submit a RegisterInstance request, the TTL value is ignored. Always specify a TTL for the service; you can use a service to register instances that create either alias or non-alias records.
dict
Public DNS namespaces only. A complex type that contains settings for an optional Route 53 health check. If you specify settings for a health check, AWS Cloud Map associates the health check with all the Route 53 DNS records that you specify in DnsConfig .
Warning
If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.
For information about the charges for health checks, see AWS Cloud Map Pricing .
Type (string) -- [REQUIRED]
The type of health check that you want to create, which indicates how Route 53 determines whether an endpoint is healthy.
Warning
You can't change the value of Type after you create a health check.
You can create the following types of health checks:
HTTP : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and waits for an HTTP status code of 200 or greater and less than 400.
HTTPS : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and waits for an HTTP status code of 200 or greater and less than 400.
Warning
If you specify HTTPS for the value of Type , the endpoint must support TLS v1.0 or later.
TCP : Route 53 tries to establish a TCP connection. If you specify TCP for Type , don't specify a value for ResourcePath .
For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
ResourcePath (string) --
The path that you want Route 53 to request when performing health checks. The path can be any value for which your endpoint will return an HTTP status code of 2xx or 3xx when the endpoint is healthy, such as the file /docs/route53-health-check.html . Route 53 automatically adds the DNS name for the service. If you don't specify a value for ResourcePath , the default value is / .
If you specify TCP for Type , you must not specify a value for ResourcePath .
FailureThreshold (integer) --
The number of consecutive health checks that an endpoint must pass or fail for Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa. For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
dict
A complex type that contains information about an optional custom health check.
Warning
If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.
FailureThreshold (integer) --
The number of 30-second intervals that you want Cloud Map to wait after receiving an UpdateInstanceCustomHealthStatus request before it changes the health status of a service instance. For example, suppose you specify a value of 2 for FailureTheshold , and then your application sends an UpdateInstanceCustomHealthStatus request. Cloud Map waits for approximately 60 seconds (2 x 30) before changing the status of the service instance based on that request.
Sending a second or subsequent UpdateInstanceCustomHealthStatus request with the same value before FailureThreshold x 30 seconds has passed doesn't accelerate the change. Cloud Map still waits FailureThreshold x 30 seconds after the first request to make the change.
dict
Response Syntax
{
'Service': {
'Id': 'string',
'Arn': 'string',
'Name': 'string',
'NamespaceId': 'string',
'Description': 'string',
'InstanceCount': 123,
'DnsConfig': {
'NamespaceId': 'string',
'RoutingPolicy': 'MULTIVALUE'|'WEIGHTED',
'DnsRecords': [
{
'Type': 'SRV'|'A'|'AAAA'|'CNAME',
'TTL': 123
},
]
},
'HealthCheckConfig': {
'Type': 'HTTP'|'HTTPS'|'TCP',
'ResourcePath': 'string',
'FailureThreshold': 123
},
'HealthCheckCustomConfig': {
'FailureThreshold': 123
},
'CreateDate': datetime(2015, 1, 1),
'CreatorRequestId': 'string'
}
}
Response Structure
(dict) --
Service (dict) --
A complex type that contains information about the new service.
Id (string) --
The ID that AWS Cloud Map assigned to the service when you created it.
Arn (string) --
The Amazon Resource Name (ARN) that AWS Cloud Map assigns to the service when you create it.
Name (string) --
The name of the service.
NamespaceId (string) --
The ID of the namespace that was used to create the service.
Description (string) --
The description of the service.
InstanceCount (integer) --
The number of instances that are currently associated with the service. Instances that were previously associated with the service but that have been deleted are not included in the count.
DnsConfig (dict) --
A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
NamespaceId (string) --
The ID of the namespace to use for DNS configuration.
RoutingPolicy (string) --
The routing policy that you want to apply to all Route 53 DNS records that AWS Cloud Map creates when you register an instance and specify this service.
Note
If you want to use this service to register instances that create alias records, specify WEIGHTED for the routing policy.
You can specify the following values:
MULTIVALUE
If you define a health check for the service and the health check is healthy, Route 53 returns the applicable value for up to eight instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with IP addresses for up to eight healthy instances. If fewer than eight instances are healthy, Route 53 responds to every DNS query with the IP addresses for all of the healthy instances.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the values for up to eight instances.
For more information about the multivalue routing policy, see Multivalue Answer Routing in the Route 53 Developer Guide .
WEIGHTED
Route 53 returns the applicable value from one randomly selected instance from among the instances that you registered using the same service. Currently, all records have the same weight, so you can't route more or less traffic to any instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with the IP address for one randomly selected instance from among the healthy instances. If no instances are healthy, Route 53 responds to DNS queries as if all of the instances were healthy.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the applicable value for one randomly selected instance.
For more information about the weighted routing policy, see Weighted Routing in the Route 53 Developer Guide .
DnsRecords (list) --
An array that contains one DnsRecord object for each Route 53 DNS record that you want AWS Cloud Map to create when you register an instance.
(dict) --
A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
Type (string) --
The type of the resource, which indicates the type of value that Route 53 returns in response to DNS queries.
Note the following:
A, AAAA, and SRV records: You can specify settings for a maximum of one A, one AAAA, and one SRV record. You can specify them in any combination.
CNAME records: If you specify CNAME for Type , you can't define any other records. This is a limitation of DNS: you can't create a CNAME record and any other type of record that has the same name as a CNAME record.
Alias records: If you want AWS Cloud Map to create a Route 53 alias record when you register an instance, specify A or AAAA for Type .
All records: You specify settings other than TTL and Type when you register an instance.
The following values are supported:
A
Route 53 returns the IP address of the resource in IPv4 format, such as 192.0.2.44.
AAAA
Route 53 returns the IP address of the resource in IPv6 format, such as 2001:0db8:85a3:0000:0000:abcd:0001:2345.
CNAME
Route 53 returns the domain name of the resource, such as www.example.com. Note the following:
You specify the domain name that you want to route traffic to when you register an instance. For more information, see RegisterInstanceRequest$Attributes .
You must specify WEIGHTED for the value of RoutingPolicy .
You can't specify both CNAME for Type and settings for HealthCheckConfig . If you do, the request will fail with an InvalidInput error.
SRV
Route 53 returns the value for an SRV record. The value for an SRV record uses the following values:
priority weight port service-hostname
Note the following about the values:
The values of priority and weight are both set to 1 and can't be changed.
The value of port comes from the value that you specify for the AWS_INSTANCE_PORT attribute when you submit a RegisterInstance request.
The value of service-hostname is a concatenation of the following values:
The value that you specify for InstanceId when you register an instance.
The name of the service.
The name of the namespace.
For example, if the value of InstanceId is test , the name of the service is backend , and the name of the namespace is example.com , the value of service-hostname is:
test.backend.example.com
If you specify settings for an SRV record and if you specify values for AWS_INSTANCE_IPV4 , AWS_INSTANCE_IPV6 , or both in the RegisterInstance request, AWS Cloud Map automatically creates A and/or AAAA records that have the same name as the value of service-hostname in the SRV record. You can ignore these records.
TTL (integer) --
The amount of time, in seconds, that you want DNS resolvers to cache the settings for this record.
Note
Alias records don't include a TTL because Route 53 uses the TTL for the AWS resource that an alias record routes traffic to. If you include the AWS_ALIAS_DNS_NAME attribute when you submit a RegisterInstance request, the TTL value is ignored. Always specify a TTL for the service; you can use a service to register instances that create either alias or non-alias records.
HealthCheckConfig (dict) --
Public DNS namespaces only. A complex type that contains settings for an optional health check. If you specify settings for a health check, AWS Cloud Map associates the health check with the records that you specify in DnsConfig .
For information about the charges for health checks, see Amazon Route 53 Pricing .
Type (string) --
The type of health check that you want to create, which indicates how Route 53 determines whether an endpoint is healthy.
Warning
You can't change the value of Type after you create a health check.
You can create the following types of health checks:
HTTP : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and waits for an HTTP status code of 200 or greater and less than 400.
HTTPS : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and waits for an HTTP status code of 200 or greater and less than 400.
Warning
If you specify HTTPS for the value of Type , the endpoint must support TLS v1.0 or later.
TCP : Route 53 tries to establish a TCP connection. If you specify TCP for Type , don't specify a value for ResourcePath .
For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
ResourcePath (string) --
The path that you want Route 53 to request when performing health checks. The path can be any value for which your endpoint will return an HTTP status code of 2xx or 3xx when the endpoint is healthy, such as the file /docs/route53-health-check.html . Route 53 automatically adds the DNS name for the service. If you don't specify a value for ResourcePath , the default value is / .
If you specify TCP for Type , you must not specify a value for ResourcePath .
FailureThreshold (integer) --
The number of consecutive health checks that an endpoint must pass or fail for Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa. For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
HealthCheckCustomConfig (dict) --
A complex type that contains information about an optional custom health check.
Warning
If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.
FailureThreshold (integer) --
The number of 30-second intervals that you want Cloud Map to wait after receiving an UpdateInstanceCustomHealthStatus request before it changes the health status of a service instance. For example, suppose you specify a value of 2 for FailureTheshold , and then your application sends an UpdateInstanceCustomHealthStatus request. Cloud Map waits for approximately 60 seconds (2 x 30) before changing the status of the service instance based on that request.
Sending a second or subsequent UpdateInstanceCustomHealthStatus request with the same value before FailureThreshold x 30 seconds has passed doesn't accelerate the change. Cloud Map still waits FailureThreshold x 30 seconds after the first request to make the change.
CreateDate (datetime) --
The date and time that the service was created, in Unix format and Coordinated Universal Time (UTC). The value of CreateDate is accurate to milliseconds. For example, the value 1516925490.087 represents Friday, January 26, 2018 12:11:30.087 AM.
CreatorRequestId (string) --
A unique string that identifies the request and that allows failed requests to be retried without the risk of executing the operation twice. CreatorRequestId can be any unique string, for example, a date/time stamp.
{'Namespace': {'Properties': {'HttpProperties': {'HttpName': 'string'}},
'Type': ['HTTP']}}
Gets information about a namespace.
See also: AWS API Documentation
Request Syntax
client.get_namespace(
Id='string'
)
string
[REQUIRED]
The ID of the namespace that you want to get information about.
dict
Response Syntax
{
'Namespace': {
'Id': 'string',
'Arn': 'string',
'Name': 'string',
'Type': 'DNS_PUBLIC'|'DNS_PRIVATE'|'HTTP',
'Description': 'string',
'ServiceCount': 123,
'Properties': {
'DnsProperties': {
'HostedZoneId': 'string'
},
'HttpProperties': {
'HttpName': 'string'
}
},
'CreateDate': datetime(2015, 1, 1),
'CreatorRequestId': 'string'
}
}
Response Structure
(dict) --
Namespace (dict) --
A complex type that contains information about the specified namespace.
Id (string) --
The ID of a namespace.
Arn (string) --
The Amazon Resource Name (ARN) that AWS Cloud Map assigns to the namespace when you create it.
Name (string) --
The name of the namespace, such as example.com .
Type (string) --
The type of the namespace. Valid values are DNS_PUBLIC and DNS_PRIVATE .
Description (string) --
The description that you specify for the namespace when you create it.
ServiceCount (integer) --
The number of services that are associated with the namespace.
Properties (dict) --
A complex type that contains information that's specific to the type of the namespace.
DnsProperties (dict) --
A complex type that contains the ID for the Route 53 hosted zone that AWS Cloud Map creates when you create a namespace.
HostedZoneId (string) --
The ID for the Route 53 hosted zone that AWS Cloud Map creates when you create a namespace.
HttpProperties (dict) --
A complex type that contains the name of an HTTP namespace.
HttpName (string) --
The name of an HTTP namespace.
CreateDate (datetime) --
The date that the namespace was created, in Unix date/time format and Coordinated Universal Time (UTC). The value of CreateDate is accurate to milliseconds. For example, the value 1516925490.087 represents Friday, January 26, 2018 12:11:30.087 AM.
CreatorRequestId (string) --
A unique string that identifies the request and that allows failed requests to be retried without the risk of executing an operation twice.
{'Service': {'NamespaceId': 'string'}}
Gets the settings for a specified service.
See also: AWS API Documentation
Request Syntax
client.get_service(
Id='string'
)
string
[REQUIRED]
The ID of the service that you want to get settings for.
dict
Response Syntax
{
'Service': {
'Id': 'string',
'Arn': 'string',
'Name': 'string',
'NamespaceId': 'string',
'Description': 'string',
'InstanceCount': 123,
'DnsConfig': {
'NamespaceId': 'string',
'RoutingPolicy': 'MULTIVALUE'|'WEIGHTED',
'DnsRecords': [
{
'Type': 'SRV'|'A'|'AAAA'|'CNAME',
'TTL': 123
},
]
},
'HealthCheckConfig': {
'Type': 'HTTP'|'HTTPS'|'TCP',
'ResourcePath': 'string',
'FailureThreshold': 123
},
'HealthCheckCustomConfig': {
'FailureThreshold': 123
},
'CreateDate': datetime(2015, 1, 1),
'CreatorRequestId': 'string'
}
}
Response Structure
(dict) --
Service (dict) --
A complex type that contains information about the service.
Id (string) --
The ID that AWS Cloud Map assigned to the service when you created it.
Arn (string) --
The Amazon Resource Name (ARN) that AWS Cloud Map assigns to the service when you create it.
Name (string) --
The name of the service.
NamespaceId (string) --
The ID of the namespace that was used to create the service.
Description (string) --
The description of the service.
InstanceCount (integer) --
The number of instances that are currently associated with the service. Instances that were previously associated with the service but that have been deleted are not included in the count.
DnsConfig (dict) --
A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
NamespaceId (string) --
The ID of the namespace to use for DNS configuration.
RoutingPolicy (string) --
The routing policy that you want to apply to all Route 53 DNS records that AWS Cloud Map creates when you register an instance and specify this service.
Note
If you want to use this service to register instances that create alias records, specify WEIGHTED for the routing policy.
You can specify the following values:
MULTIVALUE
If you define a health check for the service and the health check is healthy, Route 53 returns the applicable value for up to eight instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with IP addresses for up to eight healthy instances. If fewer than eight instances are healthy, Route 53 responds to every DNS query with the IP addresses for all of the healthy instances.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the values for up to eight instances.
For more information about the multivalue routing policy, see Multivalue Answer Routing in the Route 53 Developer Guide .
WEIGHTED
Route 53 returns the applicable value from one randomly selected instance from among the instances that you registered using the same service. Currently, all records have the same weight, so you can't route more or less traffic to any instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with the IP address for one randomly selected instance from among the healthy instances. If no instances are healthy, Route 53 responds to DNS queries as if all of the instances were healthy.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the applicable value for one randomly selected instance.
For more information about the weighted routing policy, see Weighted Routing in the Route 53 Developer Guide .
DnsRecords (list) --
An array that contains one DnsRecord object for each Route 53 DNS record that you want AWS Cloud Map to create when you register an instance.
(dict) --
A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
Type (string) --
The type of the resource, which indicates the type of value that Route 53 returns in response to DNS queries.
Note the following:
A, AAAA, and SRV records: You can specify settings for a maximum of one A, one AAAA, and one SRV record. You can specify them in any combination.
CNAME records: If you specify CNAME for Type , you can't define any other records. This is a limitation of DNS: you can't create a CNAME record and any other type of record that has the same name as a CNAME record.
Alias records: If you want AWS Cloud Map to create a Route 53 alias record when you register an instance, specify A or AAAA for Type .
All records: You specify settings other than TTL and Type when you register an instance.
The following values are supported:
A
Route 53 returns the IP address of the resource in IPv4 format, such as 192.0.2.44.
AAAA
Route 53 returns the IP address of the resource in IPv6 format, such as 2001:0db8:85a3:0000:0000:abcd:0001:2345.
CNAME
Route 53 returns the domain name of the resource, such as www.example.com. Note the following:
You specify the domain name that you want to route traffic to when you register an instance. For more information, see RegisterInstanceRequest$Attributes .
You must specify WEIGHTED for the value of RoutingPolicy .
You can't specify both CNAME for Type and settings for HealthCheckConfig . If you do, the request will fail with an InvalidInput error.
SRV
Route 53 returns the value for an SRV record. The value for an SRV record uses the following values:
priority weight port service-hostname
Note the following about the values:
The values of priority and weight are both set to 1 and can't be changed.
The value of port comes from the value that you specify for the AWS_INSTANCE_PORT attribute when you submit a RegisterInstance request.
The value of service-hostname is a concatenation of the following values:
The value that you specify for InstanceId when you register an instance.
The name of the service.
The name of the namespace.
For example, if the value of InstanceId is test , the name of the service is backend , and the name of the namespace is example.com , the value of service-hostname is:
test.backend.example.com
If you specify settings for an SRV record and if you specify values for AWS_INSTANCE_IPV4 , AWS_INSTANCE_IPV6 , or both in the RegisterInstance request, AWS Cloud Map automatically creates A and/or AAAA records that have the same name as the value of service-hostname in the SRV record. You can ignore these records.
TTL (integer) --
The amount of time, in seconds, that you want DNS resolvers to cache the settings for this record.
Note
Alias records don't include a TTL because Route 53 uses the TTL for the AWS resource that an alias record routes traffic to. If you include the AWS_ALIAS_DNS_NAME attribute when you submit a RegisterInstance request, the TTL value is ignored. Always specify a TTL for the service; you can use a service to register instances that create either alias or non-alias records.
HealthCheckConfig (dict) --
Public DNS namespaces only. A complex type that contains settings for an optional health check. If you specify settings for a health check, AWS Cloud Map associates the health check with the records that you specify in DnsConfig .
For information about the charges for health checks, see Amazon Route 53 Pricing .
Type (string) --
The type of health check that you want to create, which indicates how Route 53 determines whether an endpoint is healthy.
Warning
You can't change the value of Type after you create a health check.
You can create the following types of health checks:
HTTP : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and waits for an HTTP status code of 200 or greater and less than 400.
HTTPS : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and waits for an HTTP status code of 200 or greater and less than 400.
Warning
If you specify HTTPS for the value of Type , the endpoint must support TLS v1.0 or later.
TCP : Route 53 tries to establish a TCP connection. If you specify TCP for Type , don't specify a value for ResourcePath .
For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
ResourcePath (string) --
The path that you want Route 53 to request when performing health checks. The path can be any value for which your endpoint will return an HTTP status code of 2xx or 3xx when the endpoint is healthy, such as the file /docs/route53-health-check.html . Route 53 automatically adds the DNS name for the service. If you don't specify a value for ResourcePath , the default value is / .
If you specify TCP for Type , you must not specify a value for ResourcePath .
FailureThreshold (integer) --
The number of consecutive health checks that an endpoint must pass or fail for Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa. For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
HealthCheckCustomConfig (dict) --
A complex type that contains information about an optional custom health check.
Warning
If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.
FailureThreshold (integer) --
The number of 30-second intervals that you want Cloud Map to wait after receiving an UpdateInstanceCustomHealthStatus request before it changes the health status of a service instance. For example, suppose you specify a value of 2 for FailureTheshold , and then your application sends an UpdateInstanceCustomHealthStatus request. Cloud Map waits for approximately 60 seconds (2 x 30) before changing the status of the service instance based on that request.
Sending a second or subsequent UpdateInstanceCustomHealthStatus request with the same value before FailureThreshold x 30 seconds has passed doesn't accelerate the change. Cloud Map still waits FailureThreshold x 30 seconds after the first request to make the change.
CreateDate (datetime) --
The date and time that the service was created, in Unix format and Coordinated Universal Time (UTC). The value of CreateDate is accurate to milliseconds. For example, the value 1516925490.087 represents Friday, January 26, 2018 12:11:30.087 AM.
CreatorRequestId (string) --
A unique string that identifies the request and that allows failed requests to be retried without the risk of executing the operation twice. CreatorRequestId can be any unique string, for example, a date/time stamp.
{'Namespaces': {'CreateDate': 'timestamp',
'Description': 'string',
'Properties': {'DnsProperties': {'HostedZoneId': 'string'},
'HttpProperties': {'HttpName': 'string'}},
'ServiceCount': 'integer',
'Type': ['HTTP']}}
Lists summary information about the namespaces that were created by the current AWS account.
See also: AWS API Documentation
Request Syntax
client.list_namespaces(
NextToken='string',
MaxResults=123,
Filters=[
{
'Name': 'TYPE',
'Values': [
'string',
],
'Condition': 'EQ'|'IN'|'BETWEEN'
},
]
)
string
For the first ListNamespaces request, omit this value.
If the response contains NextToken , submit another ListNamespaces request to get the next group of results. Specify the value of NextToken from the previous response in the next request.
Note
AWS Cloud Map gets MaxResults namespaces and then filters them based on the specified criteria. It's possible that no namespaces in the first MaxResults namespaces matched the specified criteria but that subsequent groups of MaxResults namespaces do contain namespaces that match the criteria.
integer
The maximum number of namespaces that you want AWS Cloud Map to return in the response to a ListNamespaces request. If you don't specify a value for MaxResults , AWS Cloud Map returns up to 100 namespaces.
list
A complex type that contains specifications for the namespaces that you want to list.
If you specify more than one filter, a namespace must match all filters to be returned by ListNamespaces .
(dict) --
A complex type that identifies the namespaces that you want to list. You can choose to list public or private namespaces.
Name (string) -- [REQUIRED]
Specify TYPE .
Values (list) -- [REQUIRED]
If you specify EQ for Condition , specify either DNS_PUBLIC or DNS_PRIVATE .
If you specify IN for Condition , you can specify DNS_PUBLIC , DNS_PRIVATE , or both.
(string) --
Condition (string) --
The operator that you want to use to determine whether ListNamespaces returns a namespace. Valid values for condition include:
EQ : When you specify EQ for the condition, you can choose to list only public namespaces or private namespaces, but not both. EQ is the default condition and can be omitted.
IN : When you specify IN for the condition, you can choose to list public namespaces, private namespaces, or both.
BETWEEN : Not applicable
dict
Response Syntax
{
'Namespaces': [
{
'Id': 'string',
'Arn': 'string',
'Name': 'string',
'Type': 'DNS_PUBLIC'|'DNS_PRIVATE'|'HTTP',
'Description': 'string',
'ServiceCount': 123,
'Properties': {
'DnsProperties': {
'HostedZoneId': 'string'
},
'HttpProperties': {
'HttpName': 'string'
}
},
'CreateDate': datetime(2015, 1, 1)
},
],
'NextToken': 'string'
}
Response Structure
(dict) --
Namespaces (list) --
An array that contains one NamespaceSummary object for each namespace that matches the specified filter criteria.
(dict) --
A complex type that contains information about a namespace.
Id (string) --
The ID of the namespace.
Arn (string) --
The Amazon Resource Name (ARN) that AWS Cloud Map assigns to the namespace when you create it.
Name (string) --
The name of the namespace. When you create a namespace, AWS Cloud Map automatically creates a Route 53 hosted zone that has the same name as the namespace.
Type (string) --
The type of the namespace, either public or private.
Description (string) --
A description for the namespace.
ServiceCount (integer) --
The number of services that were created using the namespace.
Properties (dict) --
A complex type that contains information that is specific to the namespace type.
DnsProperties (dict) --
A complex type that contains the ID for the Route 53 hosted zone that AWS Cloud Map creates when you create a namespace.
HostedZoneId (string) --
The ID for the Route 53 hosted zone that AWS Cloud Map creates when you create a namespace.
HttpProperties (dict) --
A complex type that contains the name of an HTTP namespace.
HttpName (string) --
The name of an HTTP namespace.
CreateDate (datetime) --
The date and time that the namespace was created.
NextToken (string) --
If the response contains NextToken , submit another ListNamespaces request to get the next group of results. Specify the value of NextToken from the previous response in the next request.
Note
AWS Cloud Map gets MaxResults namespaces and then filters them based on the specified criteria. It's possible that no namespaces in the first MaxResults namespaces matched the specified criteria but that subsequent groups of MaxResults namespaces do contain namespaces that match the criteria.
{'Services': {'CreateDate': 'timestamp',
'DnsConfig': {'DnsRecords': [{'TTL': 'long',
'Type': 'SRV | A | AAAA | CNAME'}],
'NamespaceId': 'string',
'RoutingPolicy': 'MULTIVALUE | WEIGHTED'},
'HealthCheckConfig': {'FailureThreshold': 'integer',
'ResourcePath': 'string',
'Type': 'HTTP | HTTPS | TCP'},
'HealthCheckCustomConfig': {'FailureThreshold': 'integer'}}}
Lists summary information for all the services that are associated with one or more specified namespaces.
See also: AWS API Documentation
Request Syntax
client.list_services(
NextToken='string',
MaxResults=123,
Filters=[
{
'Name': 'NAMESPACE_ID',
'Values': [
'string',
],
'Condition': 'EQ'|'IN'|'BETWEEN'
},
]
)
string
For the first ListServices request, omit this value.
If the response contains NextToken , submit another ListServices request to get the next group of results. Specify the value of NextToken from the previous response in the next request.
Note
AWS Cloud Map gets MaxResults services and then filters them based on the specified criteria. It's possible that no services in the first MaxResults services matched the specified criteria but that subsequent groups of MaxResults services do contain services that match the criteria.
integer
The maximum number of services that you want AWS Cloud Map to return in the response to a ListServices request. If you don't specify a value for MaxResults , AWS Cloud Map returns up to 100 services.
list
A complex type that contains specifications for the namespaces that you want to list services for.
If you specify more than one filter, an operation must match all filters to be returned by ListServices .
(dict) --
A complex type that lets you specify the namespaces that you want to list services for.
Name (string) -- [REQUIRED]
Specify NAMESPACE_ID .
Values (list) -- [REQUIRED]
The values that are applicable to the value that you specify for Condition to filter the list of services.
(string) --
Condition (string) --
The operator that you want to use to determine whether a service is returned by ListServices . Valid values for Condition include the following:
EQ : When you specify EQ , specify one namespace ID for Values . EQ is the default condition and can be omitted.
IN : When you specify IN , specify a list of the IDs for the namespaces that you want ListServices to return a list of services for.
BETWEEN : Not applicable.
dict
Response Syntax
{
'Services': [
{
'Id': 'string',
'Arn': 'string',
'Name': 'string',
'Description': 'string',
'InstanceCount': 123,
'DnsConfig': {
'NamespaceId': 'string',
'RoutingPolicy': 'MULTIVALUE'|'WEIGHTED',
'DnsRecords': [
{
'Type': 'SRV'|'A'|'AAAA'|'CNAME',
'TTL': 123
},
]
},
'HealthCheckConfig': {
'Type': 'HTTP'|'HTTPS'|'TCP',
'ResourcePath': 'string',
'FailureThreshold': 123
},
'HealthCheckCustomConfig': {
'FailureThreshold': 123
},
'CreateDate': datetime(2015, 1, 1)
},
],
'NextToken': 'string'
}
Response Structure
(dict) --
Services (list) --
An array that contains one ServiceSummary object for each service that matches the specified filter criteria.
(dict) --
A complex type that contains information about a specified service.
Id (string) --
The ID that AWS Cloud Map assigned to the service when you created it.
Arn (string) --
The Amazon Resource Name (ARN) that AWS Cloud Map assigns to the service when you create it.
Name (string) --
The name of the service.
Description (string) --
The description that you specify when you create the service.
InstanceCount (integer) --
The number of instances that are currently associated with the service. Instances that were previously associated with the service but that have been deleted are not included in the count.
DnsConfig (dict) --
A complex type that contains information about the Amazon Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
NamespaceId (string) --
The ID of the namespace to use for DNS configuration.
RoutingPolicy (string) --
The routing policy that you want to apply to all Route 53 DNS records that AWS Cloud Map creates when you register an instance and specify this service.
Note
If you want to use this service to register instances that create alias records, specify WEIGHTED for the routing policy.
You can specify the following values:
MULTIVALUE
If you define a health check for the service and the health check is healthy, Route 53 returns the applicable value for up to eight instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with IP addresses for up to eight healthy instances. If fewer than eight instances are healthy, Route 53 responds to every DNS query with the IP addresses for all of the healthy instances.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the values for up to eight instances.
For more information about the multivalue routing policy, see Multivalue Answer Routing in the Route 53 Developer Guide .
WEIGHTED
Route 53 returns the applicable value from one randomly selected instance from among the instances that you registered using the same service. Currently, all records have the same weight, so you can't route more or less traffic to any instances.
For example, suppose the service includes configurations for one A record and a health check, and you use the service to register 10 instances. Route 53 responds to DNS queries with the IP address for one randomly selected instance from among the healthy instances. If no instances are healthy, Route 53 responds to DNS queries as if all of the instances were healthy.
If you don't define a health check for the service, Route 53 assumes that all instances are healthy and returns the applicable value for one randomly selected instance.
For more information about the weighted routing policy, see Weighted Routing in the Route 53 Developer Guide .
DnsRecords (list) --
An array that contains one DnsRecord object for each Route 53 DNS record that you want AWS Cloud Map to create when you register an instance.
(dict) --
A complex type that contains information about the Route 53 DNS records that you want AWS Cloud Map to create when you register an instance.
Type (string) --
The type of the resource, which indicates the type of value that Route 53 returns in response to DNS queries.
Note the following:
A, AAAA, and SRV records: You can specify settings for a maximum of one A, one AAAA, and one SRV record. You can specify them in any combination.
CNAME records: If you specify CNAME for Type , you can't define any other records. This is a limitation of DNS: you can't create a CNAME record and any other type of record that has the same name as a CNAME record.
Alias records: If you want AWS Cloud Map to create a Route 53 alias record when you register an instance, specify A or AAAA for Type .
All records: You specify settings other than TTL and Type when you register an instance.
The following values are supported:
A
Route 53 returns the IP address of the resource in IPv4 format, such as 192.0.2.44.
AAAA
Route 53 returns the IP address of the resource in IPv6 format, such as 2001:0db8:85a3:0000:0000:abcd:0001:2345.
CNAME
Route 53 returns the domain name of the resource, such as www.example.com. Note the following:
You specify the domain name that you want to route traffic to when you register an instance. For more information, see RegisterInstanceRequest$Attributes .
You must specify WEIGHTED for the value of RoutingPolicy .
You can't specify both CNAME for Type and settings for HealthCheckConfig . If you do, the request will fail with an InvalidInput error.
SRV
Route 53 returns the value for an SRV record. The value for an SRV record uses the following values:
priority weight port service-hostname
Note the following about the values:
The values of priority and weight are both set to 1 and can't be changed.
The value of port comes from the value that you specify for the AWS_INSTANCE_PORT attribute when you submit a RegisterInstance request.
The value of service-hostname is a concatenation of the following values:
The value that you specify for InstanceId when you register an instance.
The name of the service.
The name of the namespace.
For example, if the value of InstanceId is test , the name of the service is backend , and the name of the namespace is example.com , the value of service-hostname is:
test.backend.example.com
If you specify settings for an SRV record and if you specify values for AWS_INSTANCE_IPV4 , AWS_INSTANCE_IPV6 , or both in the RegisterInstance request, AWS Cloud Map automatically creates A and/or AAAA records that have the same name as the value of service-hostname in the SRV record. You can ignore these records.
TTL (integer) --
The amount of time, in seconds, that you want DNS resolvers to cache the settings for this record.
Note
Alias records don't include a TTL because Route 53 uses the TTL for the AWS resource that an alias record routes traffic to. If you include the AWS_ALIAS_DNS_NAME attribute when you submit a RegisterInstance request, the TTL value is ignored. Always specify a TTL for the service; you can use a service to register instances that create either alias or non-alias records.
HealthCheckConfig (dict) --
Public DNS namespaces only. A complex type that contains settings for an optional health check. If you specify settings for a health check, AWS Cloud Map associates the health check with the records that you specify in DnsConfig .
Warning
If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.
Health checks are basic Route 53 health checks that monitor an AWS endpoint. For information about pricing for health checks, see Amazon Route 53 Pricing .
Note the following about configuring health checks.
A and AAAA records
If DnsConfig includes configurations for both A and AAAA records, AWS Cloud Map creates a health check that uses the IPv4 address to check the health of the resource. If the endpoint that is specified by the IPv4 address is unhealthy, Route 53 considers both the A and AAAA records to be unhealthy.
CNAME records
You can't specify settings for HealthCheckConfig when the DNSConfig includes CNAME for the value of Type . If you do, the CreateService request will fail with an InvalidInput error.
Request interval
A Route 53 health checker in each health-checking region sends a health check request to an endpoint every 30 seconds. On average, your endpoint receives a health check request about every two seconds. However, health checkers don't coordinate with one another, so you'll sometimes see several requests per second followed by a few seconds with no health checks at all.
Health checking regions
Health checkers perform checks from all Route 53 health-checking regions. For a list of the current regions, see Regions .
Alias records
When you register an instance, if you include the AWS_ALIAS_DNS_NAME attribute, AWS Cloud Map creates a Route 53 alias record. Note the following:
Route 53 automatically sets EvaluateTargetHealth to true for alias records. When EvaluateTargetHealth is true, the alias record inherits the health of the referenced AWS resource. such as an ELB load balancer. For more information, see EvaluateTargetHealth .
If you include HealthCheckConfig and then use the service to register an instance that creates an alias record, Route 53 doesn't create the health check.
Charges for health checks
Health checks are basic Route 53 health checks that monitor an AWS endpoint. For information about pricing for health checks, see Amazon Route 53 Pricing .
Type (string) --
The type of health check that you want to create, which indicates how Route 53 determines whether an endpoint is healthy.
Warning
You can't change the value of Type after you create a health check.
You can create the following types of health checks:
HTTP : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTP request and waits for an HTTP status code of 200 or greater and less than 400.
HTTPS : Route 53 tries to establish a TCP connection. If successful, Route 53 submits an HTTPS request and waits for an HTTP status code of 200 or greater and less than 400.
Warning
If you specify HTTPS for the value of Type , the endpoint must support TLS v1.0 or later.
TCP : Route 53 tries to establish a TCP connection. If you specify TCP for Type , don't specify a value for ResourcePath .
For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
ResourcePath (string) --
The path that you want Route 53 to request when performing health checks. The path can be any value for which your endpoint will return an HTTP status code of 2xx or 3xx when the endpoint is healthy, such as the file /docs/route53-health-check.html . Route 53 automatically adds the DNS name for the service. If you don't specify a value for ResourcePath , the default value is / .
If you specify TCP for Type , you must not specify a value for ResourcePath .
FailureThreshold (integer) --
The number of consecutive health checks that an endpoint must pass or fail for Route 53 to change the current status of the endpoint from unhealthy to healthy or vice versa. For more information, see How Route 53 Determines Whether an Endpoint Is Healthy in the Route 53 Developer Guide .
HealthCheckCustomConfig (dict) --
A complex type that contains information about an optional custom health check. A custom health check, which requires that you use a third-party health checker to evaluate the health of your resources, is useful in the following circumstances:
You can't use a health check that is defined by HealthCheckConfig because the resource isn't available over the internet. For example, you can use a custom health check when the instance is in an Amazon VPC. (To check the health of resources in a VPC, the health checker must also be in the VPC.)
You want to use a third-party health checker regardless of where your resources are.
Warning
If you specify a health check configuration, you can specify either HealthCheckCustomConfig or HealthCheckConfig but not both.
To change the status of a custom health check, submit an UpdateInstanceCustomHealthStatus request. Cloud Map doesn't monitor the status of the resource, it just keeps a record of the status specified in the most recent UpdateInstanceCustomHealthStatus request.
Here's how custom health checks work:
You create a service and specify a value for FailureThreshold . The failure threshold indicates the number of 30-second intervals you want AWS Cloud Map to wait between the time that your application sends an UpdateInstanceCustomHealthStatus request and the time that AWS Cloud Map stops routing internet traffic to the corresponding resource.
You register an instance.
You configure a third-party health checker to monitor the resource that is associated with the new instance.
Note
AWS Cloud Map doesn't check the health of the resource directly.
The third-party health-checker determines that the resource is unhealthy and notifies your application.
Your application submits an UpdateInstanceCustomHealthStatus request.
AWS Cloud Map waits for (FailureThreshold x 30) seconds.
If another UpdateInstanceCustomHealthStatus request doesn't arrive during that time to change the status back to healthy, AWS Cloud Map stops routing traffic to the resource.
Note the following about configuring custom health checks.
FailureThreshold (integer) --
The number of 30-second intervals that you want Cloud Map to wait after receiving an UpdateInstanceCustomHealthStatus request before it changes the health status of a service instance. For example, suppose you specify a value of 2 for FailureTheshold , and then your application sends an UpdateInstanceCustomHealthStatus request. Cloud Map waits for approximately 60 seconds (2 x 30) before changing the status of the service instance based on that request.
Sending a second or subsequent UpdateInstanceCustomHealthStatus request with the same value before FailureThreshold x 30 seconds has passed doesn't accelerate the change. Cloud Map still waits FailureThreshold x 30 seconds after the first request to make the change.
CreateDate (datetime) --
The date and time that the service was created.
NextToken (string) --
If the response contains NextToken , submit another ListServices request to get the next group of results. Specify the value of NextToken from the previous response in the next request.
Note
AWS Cloud Map gets MaxResults services and then filters them based on the specified criteria. It's possible that no services in the first MaxResults services matched the specified criteria but that subsequent groups of MaxResults services do contain services that match the criteria.