Sharing files with ECS and EFS - docker

Question

Could you help me, please?
I'm trying to configure an ECS cluster to share files using EFS but I'm facing the following issue:
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 -> 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 -> 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
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.
I followed this tutorial: https://docs.aws.amazon.com/AmazonECS/latest/developerguide/using_efs.html and it seems the problem isn't in security groups but the container itself.
I'm using the alpine version of Redmine.
Follow the config snippets:
...
"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
}
],
Thanks in advance.

Answer 1

The log says: "no such file or directory": Make sure the directory on efs exists before using it.
Other considerations:
You cannot use "efsVolumeConfiguration" with ECS-Fargate. Currently only for ECS-on-EC2 (Fargate support is in the making).

Answer 2

I followed those links in order to solve my problem. I thought that EFS is not ready to use in ECS.
I had to map EFS inside EC2 and after that I had access from docker container.
https://gist.github.com/duluca/ebcf98923f733a1fdb6682f111b1a832#update-your-cloud-formation-template
https://xiaoyunyang.github.io/post/a-complete-guide-to-deploying-your-web-app-to-amazon-web-service/#set-up-efs-with-your-containers