interface AutoScalingPolicyProperty

Language	Type name
.NET	Amazon.CDK.Mixins.Preview.AWS.EMR.Mixins.CfnInstanceGroupConfigPropsMixin.AutoScalingPolicyProperty
Go	github.com/aws/aws-cdk-go/awscdkmixinspreview/v2/awsemr/mixins#CfnInstanceGroupConfigPropsMixin_AutoScalingPolicyProperty
Java	software.amazon.awscdk.mixins.preview.services.emr.mixins.CfnInstanceGroupConfigPropsMixin.AutoScalingPolicyProperty
Python	aws_cdk.mixins_preview.aws_emr.mixins.CfnInstanceGroupConfigPropsMixin.AutoScalingPolicyProperty
TypeScript	@aws-cdk/mixins-preview » aws_emr » mixins » CfnInstanceGroupConfigPropsMixin » AutoScalingPolicyProperty

AutoScalingPolicy defines how an instance group dynamically adds and terminates EC2 instances in response to the value of a CloudWatch metric.

For more information, see Using Automatic Scaling in Amazon EMR in the Amazon EMR Management Guide .

See also: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-emr-instancegroupconfig-autoscalingpolicy.html

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { mixins as emr_mixins } from '@aws-cdk/mixins-preview/aws-emr';
const autoScalingPolicyProperty: emr_mixins.CfnInstanceGroupConfigPropsMixin.AutoScalingPolicyProperty = {
  constraints: {
    maxCapacity: 123,
    minCapacity: 123,
  },
  rules: [{
    action: {
      market: 'market',
      simpleScalingPolicyConfiguration: {
        adjustmentType: 'adjustmentType',
        coolDown: 123,
        scalingAdjustment: 123,
      },
    },
    description: 'description',
    name: 'name',
    trigger: {
      cloudWatchAlarmDefinition: {
        comparisonOperator: 'comparisonOperator',
        dimensions: [{
          key: 'key',
          value: 'value',
        }],
        evaluationPeriods: 123,
        metricName: 'metricName',
        namespace: 'namespace',
        period: 123,
        statistic: 'statistic',
        threshold: 123,
        unit: 'unit',
      },
    },
  }],
};

Properties

Name	Type	Description
constraints?	IResolvable | ScalingConstraintsProperty	The upper and lower Amazon EC2 instance limits for an automatic scaling policy.
rules?	IResolvable | (IResolvable | ScalingRuleProperty)[]	The scale-in and scale-out rules that comprise the automatic scaling policy.

---

constraints?

Type: IResolvable | ScalingConstraintsProperty (optional)

The upper and lower Amazon EC2 instance limits for an automatic scaling policy.

Automatic scaling activity will not cause an instance group to grow above or below these limits.

See also: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-emr-instancegroupconfig-autoscalingpolicy.html#cfn-emr-instancegroupconfig-autoscalingpolicy-constraints

---

rules?

Type: IResolvable | (IResolvable | ScalingRuleProperty)[] (optional)

The scale-in and scale-out rules that comprise the automatic scaling policy.

See also: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-emr-instancegroupconfig-autoscalingpolicy.html#cfn-emr-instancegroupconfig-autoscalingpolicy-rules