describe_scalable_targets
(**kwargs)¶Gets information about the scalable targets in the specified namespace.
You can filter the results using ResourceIds
and ScalableDimension
.
See also: AWS API Documentation
Request Syntax
response = client.describe_scalable_targets(
ServiceNamespace='ecs'|'elasticmapreduce'|'ec2'|'appstream'|'dynamodb'|'rds'|'sagemaker'|'custom-resource'|'comprehend'|'lambda'|'cassandra'|'kafka'|'elasticache'|'neptune',
ResourceIds=[
'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'
)
[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.
The identifier of the resource associated with the scalable target. This string consists of the resource type and unique identifier.
service
and the unique identifier is the cluster name and service name. Example: service/default/sample-webapp
.spot-fleet-request
and the unique identifier is the Spot Fleet request ID. Example: spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE
.instancegroup
and the unique identifier is the cluster ID and instance group ID. Example: instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0
.fleet
and the unique identifier is the fleet name. Example: fleet/sample-fleet
.table
and the unique identifier is the table name. Example: table/my-table
.index
and the unique identifier is the index name. Example: table/my-table/index/my-table-index
.cluster
and the unique identifier is the cluster name. Example: cluster:my-db-cluster
.variant
and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering
.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.arn:aws:comprehend:us-west-2:123456789012:document-classifier-endpoint/EXAMPLE
.arn:aws:comprehend:us-west-2:123456789012:entity-recognizer-endpoint/EXAMPLE
.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
.table
and the unique identifier is the table name. Example: keyspace/mykeyspace/table/mytable
.arn:aws:kafka:us-east-1:123456789012:cluster/demo-cluster-1/6357e0b2-0e6a-4b86-a0b4-70df934c2e31-5
.replication-group
and the unique identifier is the replication group name. Example: replication-group/mycluster
.cluster
and the unique identifier is the cluster name. Example: cluster:mycluster
.The scalable dimension associated with the scalable target. 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.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.
dict
Response Syntax
{
'ScalableTargets': [
{
'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',
'MinCapacity': 123,
'MaxCapacity': 123,
'RoleARN': 'string',
'CreationTime': datetime(2015, 1, 1),
'SuspendedState': {
'DynamicScalingInSuspended': True|False,
'DynamicScalingOutSuspended': True|False,
'ScheduledScalingSuspended': True|False
}
},
],
'NextToken': 'string'
}
Response Structure
(dict) --
ScalableTargets (list) --
The scalable targets that match the request parameters.
(dict) --
Represents a scalable target.
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 scalable target. This string consists of the resource type and unique identifier.
service
and the unique identifier is the cluster name and service name. Example: service/default/sample-webapp
.spot-fleet-request
and the unique identifier is the Spot Fleet request ID. Example: spot-fleet-request/sfr-73fbd2ce-aa30-494c-8788-1cee4EXAMPLE
.instancegroup
and the unique identifier is the cluster ID and instance group ID. Example: instancegroup/j-2EEZNYKUA1NTV/ig-1791Y4E1L8YI0
.fleet
and the unique identifier is the fleet name. Example: fleet/sample-fleet
.table
and the unique identifier is the table name. Example: table/my-table
.index
and the unique identifier is the index name. Example: table/my-table/index/my-table-index
.cluster
and the unique identifier is the cluster name. Example: cluster:my-db-cluster
.variant
and the unique identifier is the resource ID. Example: endpoint/my-end-point/variant/KMeansClustering
.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.arn:aws:comprehend:us-west-2:123456789012:document-classifier-endpoint/EXAMPLE
.arn:aws:comprehend:us-west-2:123456789012:entity-recognizer-endpoint/EXAMPLE
.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
.table
and the unique identifier is the table name. Example: keyspace/mykeyspace/table/mytable
.arn:aws:kafka:us-east-1:123456789012:cluster/demo-cluster-1/6357e0b2-0e6a-4b86-a0b4-70df934c2e31-5
.replication-group
and the unique identifier is the replication group name. Example: replication-group/mycluster
.cluster
and the unique identifier is the cluster name. Example: cluster:mycluster
.ScalableDimension (string) --
The scalable dimension associated with the scalable target. 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.MinCapacity (integer) --
The minimum value to scale to in response to a scale-in activity.
MaxCapacity (integer) --
The maximum value to scale to in response to a scale-out activity.
RoleARN (string) --
The ARN of an IAM role that allows Application Auto Scaling to modify the scalable target on your behalf.
CreationTime (datetime) --
The Unix timestamp for when the scalable target was created.
SuspendedState (dict) --
Specifies whether the scaling activities for a scalable target are in a suspended state.
DynamicScalingInSuspended (boolean) --
Whether scale in by a target tracking scaling policy or a step scaling policy is suspended. Set the value to true
if you don't want Application Auto Scaling to remove capacity when a scaling policy is triggered. The default is false
.
DynamicScalingOutSuspended (boolean) --
Whether scale out by a target tracking scaling policy or a step scaling policy is suspended. Set the value to true
if you don't want Application Auto Scaling to add capacity when a scaling policy is triggered. The default is false
.
ScheduledScalingSuspended (boolean) --
Whether scheduled scaling is suspended. Set the value to true
if you don't want Application Auto Scaling to add or remove capacity by initiating scheduled actions. The default is false
.
NextToken (string) --
The token required to get the next set of results. This value is null
if there are no more results to return.
Exceptions
ApplicationAutoScaling.Client.exceptions.ValidationException
ApplicationAutoScaling.Client.exceptions.InvalidNextTokenException
ApplicationAutoScaling.Client.exceptions.ConcurrentUpdateException
ApplicationAutoScaling.Client.exceptions.InternalServiceException
Examples
This example describes the scalable targets for the ECS service namespace.
response = client.describe_scalable_targets(
ServiceNamespace='ecs',
)
print(response)
Expected Output:
{
'ScalableTargets': [
{
'CreationTime': datetime(2019, 5, 6, 11, 21, 46, 0, 126, 0),
'MaxCapacity': 10,
'MinCapacity': 1,
'ResourceId': 'service/default/web-app',
'RoleARN': 'arn:aws:iam::012345678910:role/aws-service-role/ecs.application-autoscaling.amazonaws.com/AWSServiceRoleForApplicationAutoScaling_ECSService',
'ScalableDimension': 'ecs:service:DesiredCount',
'ServiceNamespace': 'ecs',
'SuspendedState': {
'DynamicScalingInSuspended': False,
'DynamicScalingOutSuspended': False,
'ScheduledScalingSuspended': False,
},
},
],
'ResponseMetadata': {
'...': '...',
},
}