How to check if EFS is mounted on a docker container?

Question

I have created a task definition and mounted EFS but i'm not sure if it works..

So i wanted to verify if my EFS file system is mounted to the running container ?

How can i verify ?

Answer 1

One way is to add a file to the folder inside your container:

1. ssh into the underlying ECS EC2 instance with ssh -i "somekey.pem" [email protected]
2. Run docker ps to get the id of your container.
3. docker exec -it CONTAINERID /bin/bash to move inside the container. Inside the container create or copy a file to the EFS-folder.

Now go to the EFS console and verify that the Metered size is greater than 0 meaning your file is in EFS.

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