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Podman Linkding Issues (sopuli.xyz)
submitted 1 day ago* (last edited 1 day ago) by theorangeninja@sopuli.xyz to c/selfhosted@lemmy.world
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Hello everyone,

I am currently trying to transition from docker-compose to podman-compose before trying out podman quadlets eventually. The first couple containers work great but today I tried Linkding and I run into a weird error.

Linkding can't access the data directory because the permission gets denied. After inspecting the container all the directories inside belong to root. But podman runs rootless so that must be the issues. I tried to change the owner of the data directory on the host to root but then the data directory in the container belongs to nobody and nogroup (?). After checking the environment variable documentation of Linkding it seems like there is no environment variable for a UID and GID.

I think I have a fundamental misunderstanding how rootfull and rootless containers work so I would be very grateful if anybody could point me in the right direction on where to get a solution for this problem or anybody had success running Linkding rootless.

Thanks a lot in advance!

Edit:

I used named volumes because that's what the dev used in the example compose file. Now I tried to use named volumes instead and now everything seems to work fine. No error in the logs and the web ui is accessible.

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[–] kumi@feddit.online 1 points 1 day ago* (last edited 1 day ago) (1 children)

I think Mora is on the ball but we'd need their questions answered to know.

One possibility is that you have SELinux enabled. Check by sudo getenforce. The podman manpage explains a bit about labels and shares for mounts. Read up on :z and :Z and see if appending either to the volumes in your compose file unlocks it.

If running rootless, your host user also obviously needs be able to access it.

[–] theorangeninja@sopuli.xyz 1 points 10 hours ago

getenforce gives me Enforcing. And I think I have SELinux. I had a look at this tutorial https://www.tutorialworks.com/podman-rootless-volumes/ suggested by another commenter and after running podman unshare ls -al in the folder with the bind mount it returns root root as the owner of the directory. So as far as I understand this means for the podman namespace this folder belongs to root? Like I said in my edit using named volumes solved the issue in on way. I just tried the :Z label too and it seems to work too. So it was probably a SELinux issue?