[SOLVED] Permission denied for writing in sshfs with Docker

Permission denied for writing in sshfs with Docker

I am trying to mount a sshfs for a service. There is my Docker Stack config:

...
myservice:
...
    volumes:
      - "sshfs_volume:/home/app/web/media:rw"
...
volumes:
  sshfs_volume:
    driver: vieux/sshfs:latest
    driver_opts:
      sshcmd: "username@myhost:shared_storage"
      allow_other: ""
      password: "*****"

The command "ls -la /home/app/web/media" in a container returns the following result:

total 12
drwxrwxr-x    1 1000     1001          4096 Aug  9 21:55 .
drwxr-sr-x    1 app      app           4096 Aug  9 21:54 ..
-rw-r--r--    1 1000     1001             0 Aug  9 21:55 dump
-rw-r--r--    1 1000     1001             0 Aug  9 21:17 tmp.txt

This files were created by me via sshfs command in the same host where docker container was running. It means that volume was mounted correctly (maybe excepting permission issues).

The problem is that i can't write files in containers in this volume. For example:

> touch /home/app/web/media/t2.txt

touch: /home/app/web/media/t2.txt: Permission denied

I have tried to restart Docker Daemon, remove volumes and recreate them. The result is the same, it didn't help.

Solution

I solved it by adding to my service this parameter: user: "100:101" and adding this parameters to the volume: uid: 100 and gid: 101 in the docker-stack file. My final docker-stack file:

...
myservice:
...
    user: "100:101"
    volumes:
      - "sshfs_volume:/home/app/web/media:rw"
...
volumes:
  sshfs_volume:
    driver: vieux/sshfs:latest
    driver_opts:
      sshcmd: "username@myhost:shared_storage"
      allow_other: ""
      default_permissions: ""
      reconnect: ""
      uid: 100
      gid: 101
      password: "*****"