title: Sharing files with ECS and EFS
body: <p>Could you help me, please?</p>
  
  <p>I'm trying to configure an ECS cluster to share files using EFS but I'm facing the following issue:</p>
  
  <pre><code>level=info time=2020-03-02T17:30:27Z msg="TaskHandler: Sending task change: TaskChange: 
  [arn:aws:ecs:us-east-1:959242800104:task/74086a36-c405-4248-8475-3234b011bee8 -&gt; STOPPED, Known 
  Sent: NONE, PullStartedAt: 2020-03-02 17:30:27.661062367 +0000 UTC m=+3131.201879282, 
  PullStoppedAt: 2020-03-02 17:30:27.744492758 +0000 UTC m=+3131.285309673, ExecutionStoppedAt: 
  2020-03-02 17:30:27.913073824 +0000 UTC m=+3131.453890739, 
  arn:aws:ecs:us-east-1:959242800104:task/74086a36-c405-4248-8475-3234b011bee8 redmine -&gt; STOPPED, Reason 
  CannotCreateContainerError: Error response from daemon: failed to mount local volume: mount 
  :/mnt/efs/redmine:/var/lib/docker/volumes/ecs-redmine-22-attachments-cee2f0e7e0ebc5f55000/_data,
   data: addr=10.0.0.127,nfsvers=4.1,rsize=1048576,wsize=1048576,hard,timeo=600,retrans=2,noresvport: 
  no such file or directory, Known Sent: NONE] sent: false" module=task_handler_types.go
  </code></pre>
  
  <p>If I only declare a volume inside my ECS task, the container started normally but if I try to map the outside volume with the container folder the issue happens.</p>
  
  <p>I followed this tutorial: <a href="https://docs.aws.amazon.com/AmazonECS/latest/developerguide/using_efs.html" rel="nofollow noreferrer">https://docs.aws.amazon.com/AmazonECS/latest/developerguide/using_efs.html</a> and it seems the problem isn't in security groups but the container itself.</p>
  
  <p>I'm using the alpine version of Redmine.</p>
  
  <p>Follow the config snippets:</p>
  
  <pre><code>
    ...
    "mountPoints": [
          {
            "readOnly": null,
            "containerPath": "/usr/src/redmine/files",
            "sourceVolume": "attachments"
          }
        ],
  
    ...
  
    "volumes": [
      {
        "efsVolumeConfiguration": {
          "fileSystemId": "fs-xxxxx",
          "rootDirectory": "/mnt/efs/redmine"
        },
        "name": "attachments",
        "host": null,
        "dockerVolumeConfiguration": null
      }
    ],
  </code></pre>
  
  <p>Thanks in advance.</p>