Mastodawn

Coleslaw4145

Now try migrating all your docker containers to podman.

Don’t encourage me.

And then try turning on SELinux!

The Stoned Hacker Mar 13

It’s not that difficult to get SELinux working with podman quadlets, especially if you run things rootless. I have a kerberized service account for each application I host and my quadlets are configured to run under those. I very rarely encounter applications that simoky can’t be run rootless but I usually can find an adequate alternative. I think right now the only thing that runs as root is one of the talk or collabora containers in my nextcloud stack. No selinux issues either.

I use podman-compose with system accounts and I don’t have a ton of issues. The biggest one is that I can’t seem to get bluetooth and pip working on Home Assistant at the same time. Most of the servers I manage have SELinux and it works fine as long as I use :z/:Z with bind mounts.

A few years ago, I set up a VPS for my friend’s business; at the time, I didn’t know how to work with SELinux so I just turned it off. I tried to flip it back on, and it somehow bricked the system. We had to restore from a backup. Since then, I’ve been afraid to enable it on my flagship homelab server.

WhyJiffie Mar 13

are you sure it really bricked it? when turning it on, on next boot it needs to go over all the files and retag them or something like that, and it can take a significant amount of time

Honestly, I don’t know what happened, but it was unreachable via SSH and the web console. There shouldn’t have been a ton of files to tag since it was an Almalinux system that started with SELinux enabled, and all we added was a container app or two.

WhyJiffie Mar 14

that started with SELinux enabled

that does not matter, it needs to go over all of them. I don’t know how long it takes with SSD, but with HDD it can take a half an hour or more, with a mostly base system. and the kernel starts doing this very early, when not even systemd or other processes are running, so no ssh, but web console should have been working to see what its doing

epicshepich Mar 14

Good to know! I do hope to eventually re-enable SELinux on my flagship server, so I’ll keep this in mind. As for my friend’s server, I think he migrated to Alpine a while back.

Caveman Mar 13

I set my homelab up on Bazzite immutable with podman and SELinux. It took a while to work everything out and have it boot up into a valid state hahaha

Any reason you chose Bazzite for your homelab distro? First I’ve heard of someone doing that!

Alaknár Mar 13

Wouldn’t an immutable OS be overall a pretty good idea for a stable server?

I honestly don’t know a ton about immutable distros other than that they let you front-load some difficulty in getting things set up in exchange for making it harder to break. I was just surprised that the distro of choice was Bazzite, since its target audience seems to be gamers.

Caveman Mar 14

Good for stability, bad for flexibility for when the homelab grows more complex.

Caveman Mar 14

At the start I just wanted a desktop machine that runs Steam through sunshine/moonlight so hardware support and gaming stuff such was very important.

My homelab used to run on my laptop when it could all fit within a couple 100s of GB and I was the only user but moving it was tricky. Since I’m a programmer I’m not afraid of this stuff so I just spent the hours to figure out one problem at a time.

I ended up figuring out adding HDD whitelist in SELinux, make it accessible in podman, manually edit fstab because tools didn’t work, systemd service for startup, logging in automatically where I already forgot everything and would have not had to do any of this on a bog standard Ubuntu server.

epicshepich Mar 14

Respect! I too often take it for granted that it’s a privilege for my gaming rig and my homelab server to be separate boxes.

My server is Almalinux, my laptop is Mint, and my gaming rig is Nobara. But if I had to consolidate everything in to one machine, I’d pick Nobara.

Caveman Mar 14

I came to the same conclusion, Nobara for would have been best.

Just did that last weekend. Nothing to do anymore. 😢

exu Mar 13

Did you do Quadlets?

Yes of course. Had to spend a couple of hours fixing permission related issues.

poolhelmetinstrument Mar 13

But did you run them as rootful or the intended rootless way.

Rootless. The docker containers were rootful, hence the permission struggles.

immobile7801 Mar 13

I had problems getting apps with multiple containers working in quadlets (definitely a knowledge issue on my part, but didn’t feel the time learning it was beneficial, but will probably revisit during kubernetes learning) so went back to podman with docker compose.

I think it’s kinda better using quadlets, because I wrote some custom scripts, and quadlets made the process better. But podman compose is probably file too.