AWS CDK Reference

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v2.273.0

PredefinedMetricSpecificationProperty Struct ​

Contains predefined metric specification information for a target tracking scaling policy for Application Auto Scaling.

PredefinedMetricSpecification is a property of the AWS::ApplicationAutoScaling::ScalingPolicy TargetTrackingScalingPolicyConfiguration property type.

Source
Generated code
Type last changed
v2.93.0 · 23 Aug 2023

Example ​

ts
// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_applicationautoscaling as appscaling } from 'aws-cdk-lib';
const predefinedMetricSpecificationProperty: appscaling.CfnScalingPolicy.PredefinedMetricSpecificationProperty = {
  predefinedMetricType: 'predefinedMetricType',

  // the properties below are optional
  resourceLabel: 'resourceLabel',
};

Properties ​

predefinedMetricTypestringpredefined_metric_typestrpredefinedMetricTypeStringPredefinedMetricTypestringPredefinedMetricType*stringrequired#
The metric type.

The ALBRequestCountPerTarget metric type applies only to Spot fleet requests and ECS services.

resourceLabelstringresource_labelstrresourceLabelStringResourceLabelstringResourceLabel*string#
Identifies the resource associated with the metric type.
notes

You can't specify a resource label unless the metric type is ALBRequestCountPerTarget and there is a target group attached to the Spot Fleet or ECS service.

You create the resource label by appending the final portion of the load balancer ARN and the final portion of the target group ARN into a single value, separated by a forward slash (/). The format of the resource label is:

app/my-alb/778d41231b141a0f/targetgroup/my-alb-target-group/943f017f100becff .

Where:

  • app/<load-balancer-name>/<load-balancer-id> is the final portion of the load balancer ARN
  • targetgroup/<target-group-name>/<target-group-id> is the final portion of the target group ARN.

To find the ARN for an Application Load Balancer, use the DescribeLoadBalancers API operation. To find the ARN for the target group, use the DescribeTargetGroups API operation.