Support for attaching multiple target groups to one ECS service

[poflynn]

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Description

Previously only one target group could point to one ECS service at a time. Amazon now supports having multiple target groups pointing to a single ECS service

New or Affected Resource(s)

• aws_ecs_service

Potential Terraform Configuration

I would imagine code might look like this. Note that in the "load_balancer" section the "target_group_arn" is a list and not a single item like it is today altho this might cause backward compatibility issues so maybe isn't the right answer.

resource "aws_ecs_service" "example_ecs" {
  name                               = "example-ecs"
  task_definition                    = "${aws_ecs_task_definition.service_task_def.id}"
  desired_count                      = "3"
  deployment_minimum_healthy_percent = "50"

  cluster  = "cluster-ecs"
  iam_role = "${aws_iam_role.ecs_service_role.arn}"

  load_balancer {
    target_group_arn = "[
      ${aws_lb_target_group.target_group1.arn}, 
      ${aws_lb_target_group.target_group2.arn},
    ]"
    container_name   = "container_name"
  }

References

See post below for more detail (dated July 30, 2019).
https://aws.amazon.com/about-aws/whats-new/2019/07/amazon-ecs-services-now-support-multiple-load-balancer-target-groups/

[bflad]

Hi @poflynn 👋 Support for multiple target groups (via multiple load_balancer configuration blocks) has already been merged (#9411) and will release with version 2.22.0 of the Terraform AWS Provider, tomorrow. 👍

[poflynn]

Ah, I did a search only of open issues, it never occurred to me that it would have already been closed! Thanks!! @bflad

[ghost]

This has been released in version 2.22.0 of the Terraform AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template for triage. Thanks!

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!