Terraform-provider-aws: Feature request: ECS Docker volume support

[russmac]

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Description

AWS has added support for docker volumes to be generated by task definition configuration on 09/08/2018: https://aws.amazon.com/about-aws/whats-new/2018/08/amazon-ecs-now-supports-docker-volume-and-volume-plugins/
Parameter details are here: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/docker-volumes.html

This expands the possible parameters in a volumes array to this:

"volumes": [
        {
            "name": "string",
            "host": {
                "sourcePath": "string"
            },
            "dockerVolumeConfiguration": {
                "scope": "string",
                "autoprovision": boolean,
                "driver": "string",
                "driverOpts": {
                    "key": "value"
                },
                "labels": {
                    "key": "value"
                }
            }
        }
    ]

This greatly streamlines provisioning of docker volumes in a Terraform ECS deployment.

New or Affected Resource(s)

• aws_ecs_task_definition

Potential Terraform Configuration

resource "aws_ecs_task_definition" "service" {
  family                = "service"
  container_definitions = "${file("task-definitions/service.json")}"

  volume {
    name      = "service-storage"
    host_path = "/ecs/service-storage"
    docker_volume_configuration {
                driver              = "local"
                scope             = "shared"
                autoprovision = true,
                labels {
                    name = "service-storage"
                }
    }
  }
}

References

https://docs.aws.amazon.com/AmazonECS/latest/developerguide/docker-volumes.html

https://aws.amazon.com/about-aws/whats-new/2018/08/amazon-ecs-now-supports-docker-volume-and-volume-plugins/

[bearfact]

👍

[smartgreenga]

:+1:

[markphelps]

Are there any workarounds you have found in the mean time? Basically I want to be able to create a task definition that uses a persistent docker data volume, however the only thing I could find in the Terraform docs states:

ECS will create a nonpersistent data volume that starts empty and is deleted after the task has finished

Terraform noob here

[russmac]

@markphelps The current parameters allow you to;

• Specify an existing Docker volume (which you have to provision yourself on the ECS instances the container has affinity to) however each instance will have a different volume.
• Refer to an existing path in the container and use the lower performing Docker writable layer, Which is not persistent.

The new parameters would create a docker volume on the instance the task is launched or if "shared" set use an existing one (and not delete it when the task stops)

[ewilde]

@russmac i've started working on this issue

[russmac]

@ewilde Thank you, I can use your PR as a guide to get started writing Go for the next feature I need.

[bflad]

Initial support for this has been merged in and will be released with version 1.36.0 of the AWS provider, likely later today. 👍

[bflad]

This has been released in version 1.36.0 of the AWS provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

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