Idk about OP, but I want to run all of my exposed services in containers for security benefits, and I use samba to provide an SMB share for Windows clients.
Comment on samba docker compose help
foggy@lemmy.world 3 weeks ago
You’re running into that permission error because of how Docker handles file permissions between the host and the container. It’s by design for security reasons. The user inside the container likely doesn’t have access to the mounted directory unless the UID and GID match what’s on the host. You can work around it, but it’s locked down intentionally.
Also, what’s the use case here? What do you need file sharing via Samba in a Docker container for? If it’s just about moving files in and out, docker cp or docker exec -it container /bin/bash might be easier.
sugar_in_your_tea@sh.itjust.works 3 weeks ago
basic_user@lemmy.world 3 weeks ago
Well, I’m trying to share from within the docker container. I just want to run the samba service from a container. The share is an external hard drive connected to the server. I want to be able to move files to and from the ext hdd.
foggy@lemmy.world 3 weeks ago
Okay, the permission error is almost certainly because the Samba process inside the container doesn’t have the right Linux permissions for the host directory /mnt/my_ext_hdd/my_dir/my_subdir.
On your server running docker, find the numeric UID and GID for that directory: ls -ln /mnt/my_ext_hdd/my_dir/my_subdir
you likely need to set PUID=<uid_from_step_1> and PGID=<gid_from_step_1> in the environment: section of your docker-compose.yml file for the Samba service.
Recreate the container (docker compose up -d --force-recreate).
WARNING: This assumes you are only accessing Samba from within your secure local network. Never expose Samba directly to the internet. Doing so is a major security risk and makes you a target for attacks.