Application Auto Scaling

2023/01/04 - Application Auto Scaling - 1 updated api methods

Changes  Customers can now use the existing DescribeScalingActivities API to also see the detailed and machine-readable reasons for Application Auto Scaling not scaling their resources and, if needed, take the necessary corrective actions.

DescribeScalingActivities (updated) Link ΒΆ
Changes (request, response)
Request 
{'IncludeNotScaledActivities': 'boolean'}
Response 
{'ScalingActivities': {'NotScaledReasons': [{'Code': 'string',
                                             'CurrentCapacity': 'integer',
                                             'MaxCapacity': 'integer',
                                             'MinCapacity': 'integer'}]}}

Provides descriptive information about the scaling activities in the specified namespace from the previous six weeks.

You can filter the results using ResourceId and ScalableDimension .

For information about viewing scaling activities using the Amazon Web Services CLI, see Scaling activities for Application Auto Scaling .

See also: AWS API Documentation

Request Syntax

client.describe_scaling_activities(
    ServiceNamespace='ecs'|'elasticmapreduce'|'ec2'|'appstream'|'dynamodb'|'rds'|'sagemaker'|'custom-resource'|'comprehend'|'lambda'|'cassandra'|'kafka'|'elasticache'|'neptune',
    ResourceId='string',
    ScalableDimension='ecs:service:DesiredCount'|'ec2:spot-fleet-request:TargetCapacity'|'elasticmapreduce:instancegroup:InstanceCount'|'appstream:fleet:DesiredCapacity'|'dynamodb:table:ReadCapacityUnits'|'dynamodb:table:WriteCapacityUnits'|'dynamodb:index:ReadCapacityUnits'|'dynamodb:index:WriteCapacityUnits'|'rds:cluster:ReadReplicaCount'|'sagemaker:variant:DesiredInstanceCount'|'custom-resource:ResourceType:Property'|'comprehend:document-classifier-endpoint:DesiredInferenceUnits'|'comprehend:entity-recognizer-endpoint:DesiredInferenceUnits'|'lambda:function:ProvisionedConcurrency'|'cassandra:table:ReadCapacityUnits'|'cassandra:table:WriteCapacityUnits'|'kafka:broker-storage:VolumeSize'|'elasticache:replication-group:NodeGroups'|'elasticache:replication-group:Replicas'|'neptune:cluster:ReadReplicaCount',
    MaxResults=123,
    NextToken='string',
    IncludeNotScaledActivities=True|False
)
type ServiceNamespace

string

param ServiceNamespace

[REQUIRED]

The namespace of the Amazon Web Services service that provides the resource. For a resource provided by your own application or service, use custom-resource instead.

type ResourceId

string

param ResourceId

The identifier of the resource associated with the scaling activity. This string consists of the resource type and unique identifier.

  • ECS service - The resource type is service and the unique identifier is the cluster name and service name. Example: service/default/sample-webapp .

  • Spot Fleet - The resource type is spot-fleet-request and the unique identifier is the Spot Fleet request ID. Example: spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE .

  • EMR cluster - The resource type is instancegroup and the unique identifier is the cluster ID and instance group ID. Example: instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0 .

  • AppStream 2.0 fleet - The resource type is fleet and the unique identifier is the fleet name. Example: fleet/sample-fleet .

  • DynamoDB table - The resource type is table and the unique identifier is the table name. Example: table/my-table .

  • DynamoDB global secondary index - The resource type is index and the unique identifier is the index name. Example: table/my-table/index/my-table-index .

  • Aurora DB cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:my-db-cluster .

  • SageMaker endpoint variant - The resource type is variant and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering .

  • Custom resources are not supported with a resource type. This parameter must specify the OutputValue from the CloudFormation template stack used to access the resources. The unique identifier is defined by the service provider. More information is available in our GitHub repository .

  • Amazon Comprehend document classification endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:document-classifier-endpoint/EXAMPLE .

  • Amazon Comprehend entity recognizer endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:entity-recognizer-endpoint/EXAMPLE .

  • Lambda provisioned concurrency - The resource type is function and the unique identifier is the function name with a function version or alias name suffix that is not $LATEST . Example: function:my-function:prod or function:my-function:1 .

  • Amazon Keyspaces table - The resource type is table and the unique identifier is the table name. Example: keyspace/mykeyspace/table/mytable .

  • Amazon MSK cluster - The resource type and unique identifier are specified using the cluster ARN. Example: arn:aws:kafka:us-east-1:123456789012:cluster/demo-cluster-1/6357e0b2-0e6a-4b86-a0b4-70df934c2e31-5 .

  • Amazon ElastiCache replication group - The resource type is replication-group and the unique identifier is the replication group name. Example: replication-group/mycluster .

  • Neptune cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:mycluster .

type ScalableDimension

string

param ScalableDimension

The scalable dimension. This string consists of the service namespace, resource type, and scaling property. If you specify a scalable dimension, you must also specify a resource ID.

  • ecs:service:DesiredCount - The desired task count of an ECS service.

  • elasticmapreduce:instancegroup:InstanceCount - The instance count of an EMR Instance Group.

  • ec2:spot-fleet-request:TargetCapacity - The target capacity of a Spot Fleet.

  • appstream:fleet:DesiredCapacity - The desired capacity of an AppStream 2.0 fleet.

  • dynamodb:table:ReadCapacityUnits - The provisioned read capacity for a DynamoDB table.

  • dynamodb:table:WriteCapacityUnits - The provisioned write capacity for a DynamoDB table.

  • dynamodb:index:ReadCapacityUnits - The provisioned read capacity for a DynamoDB global secondary index.

  • dynamodb:index:WriteCapacityUnits - The provisioned write capacity for a DynamoDB global secondary index.

  • rds:cluster:ReadReplicaCount - The count of Aurora Replicas in an Aurora DB cluster. Available for Aurora MySQL-compatible edition and Aurora PostgreSQL-compatible edition.

  • sagemaker:variant:DesiredInstanceCount - The number of EC2 instances for a SageMaker model endpoint variant.

  • custom-resource:ResourceType:Property - The scalable dimension for a custom resource provided by your own application or service.

  • comprehend:document-classifier-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend document classification endpoint.

  • comprehend:entity-recognizer-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend entity recognizer endpoint.

  • lambda:function:ProvisionedConcurrency - The provisioned concurrency for a Lambda function.

  • cassandra:table:ReadCapacityUnits - The provisioned read capacity for an Amazon Keyspaces table.

  • cassandra:table:WriteCapacityUnits - The provisioned write capacity for an Amazon Keyspaces table.

  • kafka:broker-storage:VolumeSize - The provisioned volume size (in GiB) for brokers in an Amazon MSK cluster.

  • elasticache:replication-group:NodeGroups - The number of node groups for an Amazon ElastiCache replication group.

  • elasticache:replication-group:Replicas - The number of replicas per node group for an Amazon ElastiCache replication group.

  • neptune:cluster:ReadReplicaCount - The count of read replicas in an Amazon Neptune DB cluster.

type MaxResults

integer

param MaxResults

The maximum number of scalable targets. This value can be between 1 and 50. The default value is 50.

If this parameter is used, the operation returns up to MaxResults results at a time, along with a NextToken value. To get the next set of results, include the NextToken value in a subsequent call. If this parameter is not used, the operation returns up to 50 results and a NextToken value, if applicable.

type NextToken

string

param NextToken

The token for the next set of results.

type IncludeNotScaledActivities

boolean

param IncludeNotScaledActivities

Specifies whether to include activities that aren't scaled (not scaled activities ) in the response. Not scaled activities are activities that aren't completed or started for various reasons, such as preventing infinite scaling loops. For help interpreting the not scaled reason details in the response, see Scaling activities for Application Auto Scaling .

rtype

dict

returns

Response Syntax

{
    'ScalingActivities': [
        {
            'ActivityId': 'string',
            'ServiceNamespace': 'ecs'|'elasticmapreduce'|'ec2'|'appstream'|'dynamodb'|'rds'|'sagemaker'|'custom-resource'|'comprehend'|'lambda'|'cassandra'|'kafka'|'elasticache'|'neptune',
            'ResourceId': 'string',
            'ScalableDimension': 'ecs:service:DesiredCount'|'ec2:spot-fleet-request:TargetCapacity'|'elasticmapreduce:instancegroup:InstanceCount'|'appstream:fleet:DesiredCapacity'|'dynamodb:table:ReadCapacityUnits'|'dynamodb:table:WriteCapacityUnits'|'dynamodb:index:ReadCapacityUnits'|'dynamodb:index:WriteCapacityUnits'|'rds:cluster:ReadReplicaCount'|'sagemaker:variant:DesiredInstanceCount'|'custom-resource:ResourceType:Property'|'comprehend:document-classifier-endpoint:DesiredInferenceUnits'|'comprehend:entity-recognizer-endpoint:DesiredInferenceUnits'|'lambda:function:ProvisionedConcurrency'|'cassandra:table:ReadCapacityUnits'|'cassandra:table:WriteCapacityUnits'|'kafka:broker-storage:VolumeSize'|'elasticache:replication-group:NodeGroups'|'elasticache:replication-group:Replicas'|'neptune:cluster:ReadReplicaCount',
            'Description': 'string',
            'Cause': 'string',
            'StartTime': datetime(2015, 1, 1),
            'EndTime': datetime(2015, 1, 1),
            'StatusCode': 'Pending'|'InProgress'|'Successful'|'Overridden'|'Unfulfilled'|'Failed',
            'StatusMessage': 'string',
            'Details': 'string',
            'NotScaledReasons': [
                {
                    'Code': 'string',
                    'MaxCapacity': 123,
                    'MinCapacity': 123,
                    'CurrentCapacity': 123
                },
            ]
        },
    ],
    'NextToken': 'string'
}

Response Structure

  • (dict) --

    • ScalingActivities (list) --

      A list of scaling activity objects.

      • (dict) --

        Represents a scaling activity.

        • ActivityId (string) --

          The unique identifier of the scaling activity.

        • ServiceNamespace (string) --

          The namespace of the Amazon Web Services service that provides the resource, or a custom-resource .

        • ResourceId (string) --

          The identifier of the resource associated with the scaling activity. This string consists of the resource type and unique identifier.

          • ECS service - The resource type is service and the unique identifier is the cluster name and service name. Example: service/default/sample-webapp .

          • Spot Fleet - The resource type is spot-fleet-request and the unique identifier is the Spot Fleet request ID. Example: spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE .

          • EMR cluster - The resource type is instancegroup and the unique identifier is the cluster ID and instance group ID. Example: instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0 .

          • AppStream 2.0 fleet - The resource type is fleet and the unique identifier is the fleet name. Example: fleet/sample-fleet .

          • DynamoDB table - The resource type is table and the unique identifier is the table name. Example: table/my-table .

          • DynamoDB global secondary index - The resource type is index and the unique identifier is the index name. Example: table/my-table/index/my-table-index .

          • Aurora DB cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:my-db-cluster .

          • SageMaker endpoint variant - The resource type is variant and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering .

          • Custom resources are not supported with a resource type. This parameter must specify the OutputValue from the CloudFormation template stack used to access the resources. The unique identifier is defined by the service provider. More information is available in our GitHub repository .

          • Amazon Comprehend document classification endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:document-classifier-endpoint/EXAMPLE .

          • Amazon Comprehend entity recognizer endpoint - The resource type and unique identifier are specified using the endpoint ARN. Example: arn:aws:comprehend:us-west-2:123456789012:entity-recognizer-endpoint/EXAMPLE .

          • Lambda provisioned concurrency - The resource type is function and the unique identifier is the function name with a function version or alias name suffix that is not $LATEST . Example: function:my-function:prod or function:my-function:1 .

          • Amazon Keyspaces table - The resource type is table and the unique identifier is the table name. Example: keyspace/mykeyspace/table/mytable .

          • Amazon MSK cluster - The resource type and unique identifier are specified using the cluster ARN. Example: arn:aws:kafka:us-east-1:123456789012:cluster/demo-cluster-1/6357e0b2-0e6a-4b86-a0b4-70df934c2e31-5 .

          • Amazon ElastiCache replication group - The resource type is replication-group and the unique identifier is the replication group name. Example: replication-group/mycluster .

          • Neptune cluster - The resource type is cluster and the unique identifier is the cluster name. Example: cluster:mycluster .

        • ScalableDimension (string) --

          The scalable dimension. This string consists of the service namespace, resource type, and scaling property.

          • ecs:service:DesiredCount - The desired task count of an ECS service.

          • elasticmapreduce:instancegroup:InstanceCount - The instance count of an EMR Instance Group.

          • ec2:spot-fleet-request:TargetCapacity - The target capacity of a Spot Fleet.

          • appstream:fleet:DesiredCapacity - The desired capacity of an AppStream 2.0 fleet.

          • dynamodb:table:ReadCapacityUnits - The provisioned read capacity for a DynamoDB table.

          • dynamodb:table:WriteCapacityUnits - The provisioned write capacity for a DynamoDB table.

          • dynamodb:index:ReadCapacityUnits - The provisioned read capacity for a DynamoDB global secondary index.

          • dynamodb:index:WriteCapacityUnits - The provisioned write capacity for a DynamoDB global secondary index.

          • rds:cluster:ReadReplicaCount - The count of Aurora Replicas in an Aurora DB cluster. Available for Aurora MySQL-compatible edition and Aurora PostgreSQL-compatible edition.

          • sagemaker:variant:DesiredInstanceCount - The number of EC2 instances for a SageMaker model endpoint variant.

          • custom-resource:ResourceType:Property - The scalable dimension for a custom resource provided by your own application or service.

          • comprehend:document-classifier-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend document classification endpoint.

          • comprehend:entity-recognizer-endpoint:DesiredInferenceUnits - The number of inference units for an Amazon Comprehend entity recognizer endpoint.

          • lambda:function:ProvisionedConcurrency - The provisioned concurrency for a Lambda function.

          • cassandra:table:ReadCapacityUnits - The provisioned read capacity for an Amazon Keyspaces table.

          • cassandra:table:WriteCapacityUnits - The provisioned write capacity for an Amazon Keyspaces table.

          • kafka:broker-storage:VolumeSize - The provisioned volume size (in GiB) for brokers in an Amazon MSK cluster.

          • elasticache:replication-group:NodeGroups - The number of node groups for an Amazon ElastiCache replication group.

          • elasticache:replication-group:Replicas - The number of replicas per node group for an Amazon ElastiCache replication group.

          • neptune:cluster:ReadReplicaCount - The count of read replicas in an Amazon Neptune DB cluster.

        • Description (string) --

          A simple description of what action the scaling activity intends to accomplish.

        • Cause (string) --

          A simple description of what caused the scaling activity to happen.

        • StartTime (datetime) --

          The Unix timestamp for when the scaling activity began.

        • EndTime (datetime) --

          The Unix timestamp for when the scaling activity ended.

        • StatusCode (string) --

          Indicates the status of the scaling activity.

        • StatusMessage (string) --

          A simple message about the current status of the scaling activity.

        • Details (string) --

          The details about the scaling activity.

        • NotScaledReasons (list) --

          Machine-readable data that describes the reason for a not scaled activity. Only available when DescribeScalingActivities includes not scaled activities.

          • (dict) --

            Describes the reason for an activity that isn't scaled (not scaled activity ), in machine-readable format. For help interpreting the not scaled reason details, see Scaling activities for Application Auto Scaling .

            • Code (string) --

              A code that represents the reason for not scaling.

              Valid values:

              • AutoScalingAnticipatedFlapping

              • TargetServicePutResourceAsUnscalable

              • AlreadyAtMaxCapacity

              • AlreadyAtMinCapacity

              • AlreadyAtDesiredCapacity

            • MaxCapacity (integer) --

              The maximum capacity.

            • MinCapacity (integer) --

              The minimum capacity.

            • CurrentCapacity (integer) --

              The current capacity.

    • NextToken (string) --

      The token required to get the next set of results. This value is null if there are no more results to return.