Mounting EBS Volumes requires ECS Agent and Docker restart

[tsturzl]

I spent most of today trying to get an EBS volume mounted on a docker container. I found in another ticket that I need to restart docker and thus ecs agent to get the volumes to mount. This seems like a bug to me. Once I did restart docker and the ecs agent I was able to mount the volume to my container by specifying it in my task and container definitions. Is there anyway to fix this issue?

[jhaynes]

Sorry for the frustration @tsturzl.

Specifically, this was because Docker runs in a private mount namespace. See moby/moby#10225 and moby/moby#22806 for more detail.

[samuelkarp]

Closing this; we should have closed this a while ago. Recent releases of the docker package for Amazon Linux (since 17.03.1, if my memory serves me correctly) no longer use a private mount namespace, so you no longer need to restart Docker when attaching and mounting EBS volumes in order to use those mountpoints in your task definitions.