Describes the scaling policies for the specified service namespace.
applicationautoscaling_describe_scaling_policies(PolicyNames,
ServiceNamespace, ResourceId, ScalableDimension, MaxResults, NextToken)The names of the scaling policies to describe.
[required] The namespace of the AWS service that provides the resource or
custom-resource for a resource provided by your own application or
service. For more information, see AWS Service Namespaces
in the Amazon Web Services General Reference.
The identifier of the resource associated with the scaling policy. This string consists of the resource type and unique identifier. If you specify a scalable dimension, you must also specify a resource ID.
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 request - 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 resource ID. Example: table/my-table.
DynamoDB global secondary index - The resource type is index and
the unique identifier is the resource ID. 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.
Amazon SageMaker endpoint variants - 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.
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.
ec2:spot-fleet-request:TargetCapacity - The target capacity of a
Spot fleet request.
elasticmapreduce:instancegroup:InstanceCount - The instance count
of an EMR Instance Group.
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 an Amazon SageMaker model endpoint variant.
custom-resource:ResourceType:Property - The scalable dimension for
a custom resource provided by your own application or service.
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.
The token for the next set of results.
svc$describe_scaling_policies(
PolicyNames = list(
"string"
),
ServiceNamespace = "ecs"|"elasticmapreduce"|"ec2"|"appstream"|"dynamodb"|"rds"|"sagemaker"|"custom-resource",
ResourceId = "string",
ScalableDimension = "ecs:service:DesiredCount"|"ec2:spot-fleet-request:TargetCapacity"|"elasticmapreduce:instancegroup:InstanceCount"|"appstream:fleet:DesiredCapacity"|"dynamodb:table:ReadCapacityUnits"|"dynamodb:table:WriteCapacityUnits"|"dynamodb:index:ReadCapacityUnits"|"dynamodb:index:WriteCapacityUnits"|"rds:cluster:ReadReplicaCount"|"sagemaker:variant:DesiredInstanceCount"|"custom-resource:ResourceType:Property",
MaxResults = 123,
NextToken = "string"
)
You can filter the results using the ResourceId, ScalableDimension,
and PolicyNames parameters.
To create a scaling policy or update an existing one, see PutScalingPolicy. If you are no longer using a scaling policy, you can delete it using DeleteScalingPolicy.
# NOT RUN {
# This example describes the scaling policies for the ecs service
# namespace.
# }
# NOT RUN {
svc$describe_scaling_policies(
ServiceNamespace = "ecs"
)
# }
# NOT RUN {
# }
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