aws-cdk-lib.aws_ecs.CfnService.PlacementConstraintProperty

interface PlacementConstraintProperty

LanguageType name
.NETAmazon.CDK.AWS.ECS.CfnService.PlacementConstraintProperty
Gogithub.com/aws/aws-cdk-go/awscdk/v2/awsecs#CfnService_PlacementConstraintProperty
Javasoftware.amazon.awscdk.services.ecs.CfnService.PlacementConstraintProperty
Pythonaws_cdk.aws_ecs.CfnService.PlacementConstraintProperty
TypeScript aws-cdk-lib » aws_ecs » CfnService » PlacementConstraintProperty

The PlacementConstraint property specifies an object representing a constraint on task placement in the task definition.

For more information, see Task Placement Constraints in the Amazon Elastic Container Service Developer Guide .

Example

// The code below shows an example of how to instantiate this type.
// The values are placeholders you should change.
import { aws_ecs as ecs } from 'aws-cdk-lib';
const placementConstraintProperty: ecs.CfnService.PlacementConstraintProperty = {
  type: 'type',

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

Properties

NameTypeDescription
typestringThe type of constraint.
expression?stringA cluster query language expression to apply to the constraint.

type

Type: string

The type of constraint.

Use distinctInstance to ensure that each task in a particular group is running on a different container instance. Use memberOf to restrict the selection to a group of valid candidates.


expression?

Type: string (optional)

A cluster query language expression to apply to the constraint.

The expression can have a maximum length of 2000 characters. You can't specify an expression if the constraint type is distinctInstance . For more information, see Cluster query language in the Amazon Elastic Container Service Developer Guide .