class AlternateTarget

Language	Type name
.NET	Amazon.CDK.AWS.ECS.AlternateTarget
Go	github.com/aws/aws-cdk-go/awscdk/v2/awsecs#AlternateTarget
Java	software.amazon.awscdk.services.ecs.AlternateTarget
Python	aws_cdk.aws_ecs.AlternateTarget
TypeScript (source)	aws-cdk-lib » aws_ecs » AlternateTarget

Implements IAlternateTarget

Configuration for alternate target groups used in blue/green deployments with load balancers.

Example

import * as lambda from 'aws-cdk-lib/aws-lambda';

declare const cluster: ecs.Cluster;
declare const taskDefinition: ecs.TaskDefinition;
declare const lambdaHook: lambda.Function;
declare const blueTargetGroup: elbv2.ApplicationTargetGroup;
declare const greenTargetGroup: elbv2.ApplicationTargetGroup;
declare const prodListenerRule: elbv2.ApplicationListenerRule;

const service = new ecs.FargateService(this, 'Service', {
  cluster,
  taskDefinition,
  deploymentStrategy: ecs.DeploymentStrategy.BLUE_GREEN,
});

service.addLifecycleHook(new ecs.DeploymentLifecycleLambdaTarget(lambdaHook, 'PreScaleHook', {
  lifecycleStages: [ecs.DeploymentLifecycleStage.PRE_SCALE_UP],
}));

const target = service.loadBalancerTarget({
  containerName: 'nginx',
  containerPort: 80,
  protocol: ecs.Protocol.TCP,
  alternateTarget: new ecs.AlternateTarget('AlternateTarget', {
    alternateTargetGroup: greenTargetGroup,
    productionListener: ecs.ListenerRuleConfiguration.applicationListenerRule(prodListenerRule),
  }),
});

target.attachToApplicationTargetGroup(blueTargetGroup);

Initializer

new AlternateTarget(id: string, props: AlternateTargetProps)

Parameters

• id string
• props AlternateTargetProps

Methods

Name	Description
bind(scope)	Bind this configuration to a service.

---

bind(scope)

public bind(scope: IConstruct): AlternateTargetConfig

Parameters

• scope IConstruct

Returns

• AlternateTargetConfig

Bind this configuration to a service.