this post was submitted on 07 Nov 2024
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Where to Mount NFS Shares and Where to Keep Docker-Compose (lemmy.world)
submitted 2 weeks ago by njordomir@lemmy.world to c/selfhosted@lemmy.world
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Hi folks,

You all have been instrumental to my self-hosting journey, both as inspiration and as a knowledge base when I'm stumped despite my research.

I am finding various different opinions on this and I'm curious what folks here have to say.

I'm running a Debian server accessible only within the home with a number of docker images like paperless-ngx, jellyfin, focalboard, etc. Most of the data actually resides on my NAS via NFS.

  1. Is /mnt or /media the correct place to mount the directories. Is mounting it on the host and mapping the mount point to docker with a bind the best path here?

  2. Additionally, where is the best place to keep my docker-compose? I understand that things will work even if I pick weird locations, but I also believe in the importance of convention. Should this be in the home directory of the server user? I've seen a number of locations mentioned in search results.

  3. Do I have to change the file perms in the locations where I store the docker compose or any config files that don't sit on the other end of NFS?

Any other resources you wish to share are appreciated. I appreciate the helpfulness of this community.

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[–] ramielrowe@lemmy.world 2 points 2 weeks ago* (last edited 2 weeks ago)

In general, on bare-metal, I mount below /mnt. For a long time, I just mounted in from pre-setup host mounts. But, I use Kubernetes, and you can directly specify a NFS mount. So, I eventually migrated everything to that as I made other updates. I don't think it's horrible to mount from the host, but if docker-compose supports directly defining an NFS volume, that's one less thing to set up if you need to re-provision your docker host.

(quick edit) I don't think docker compose reads and re-reads compose files. They're read when you invoke docker compose but that's it. So...

If you're simply invoking docker compose to interact with things, then I'd say store the compose files where ever makes the most sense for your process. Maybe think about setting up a specific directory on your NFS share and mount that to your docker host(s). I would also consider version controlling your compose files. If you're concerned about secrets, store them in encrypted env files. Something like SOPS can help with this.

As long as the user invoking docker compose can read the compose files, you're good. When it comes to mounting data into containers from NFS.... yes permissions will matter and it might be a pain as it depends on how flexible the container you're using is in terms of user and filesystem permissions.