Fix aws cdk ecs dependency on task definition family

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Why does it happen?

The issue is caused by the following dependency in the aws-cdk-lib package:

if (props.deploymentController?.type === DeploymentControllerType.CODE_DEPLOY) { // Strip the revision ID from the service's task definition property to // prevent new task def revisions in the stack from triggering updates // to the stack's ECS service resource this.resource.taskDefinition = taskDefinition.family; this.node.addDependency(taskDefinition); }

Solution

Let's say your CDK code for creating ECS service looks like this:

... // Task definition const taskDef = new ecs.FargateTaskDefinition(this, "ecstaskdefinition", { taskRole: taskRole, family: `myapplication` }); // dummy container for initializing const initContainerRepo = ecr.Repository.fromRepositoryName(this, 'Repo', "init-container"); const container = taskDef.addContainer(`myapplication`, { image: ecs.ContainerImage.fromEcrRepository(initContainerRepo), // fromRegistry("amazon/amazon-ecs-sample"), memoryLimitMiB: 256, cpu: 256, logging }); container.addPortMappings({ containerPort: 80, protocol: ecs.Protocol.TCP }); // ECS service const service = new ecs.FargateService(this, 'FargateService', { cluster, taskDefinition: taskDef, serviceName: `ecs-myapplication-01`, healthCheckGracePeriod: cdk.Duration.seconds(60), desiredCount: desiredCount, deploymentController: { type: ecs.DeploymentControllerType.CODE_DEPLOY }, }); ...

The dependency issue between ECS service and Task definition family can be resolved by adding the following code below ECS service:

// Override the dependency on Task definition family const cfnService = service.node.defaultChild as ecs.CfnService; cfnService.addOverride('Properties.TaskDefinition', service.taskDefinition.taskDefinitionArn);

This override will remove the dependency and allow you to complete the deployment.

Feel free to reach out if you face any issues!
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Vishnu S.

How to fix unable to update task definition on services with a CODE_DEPLOY deployment controller CDK issue

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