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How hard is it to move Docker containers to another system? (lemmy.dbzer0.com)

submitted 1 year ago by Tippon@lemmy.dbzer0.com to c/selfhost@lemmy.ml

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Or another container type if there's a better one?

My server was originally connected to my TV to run Kodi and play some games while serving files, so it's running Xubuntu. While it works well for the most part, I want to set it up properly, and be able to move the services to a new system when the time comes.

I was thinking that Docker, or another container system, would probably be best, because as well as hopefully being able to be moved, installing new software shouldn't affect anything else.

Am I on the right track? Can containers be moved to another system without needing to be set up again?

I'm running the *arr suite two Java Minecraft servers Plex media server Two copies of qBittorent NZBGet Ombi Mylar Codex and probably some others that I've forgotten.

While I'm at it, is there a best OS to base everything on? Preferably free. The server is a 4th generation i5 with 32GB RAM, and currently about 10TB of HDD space, with a small SSD for boot, and a Quadro graphics card for transcoding.

Thanks in advance :)

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[–] mark@social.cool110.xyz 18 points 1 year ago (4 children)

@Tippon That is a big part of the point behind containers, you don't have any long term state inside them. Migration is just a case of copying the configuration over along with the contents of any persistent volumes.

It's worth looking into Podman instead of Docker, the daemon-less architecture makes it more lightweight and secure as it's easier to have rootless containers. Management can also be easer as being a Red Hat project it integrates well into Systemd.

With your existing server on Xubuntu you may as well stick with Ubuntu Server or Debian for the familiarity.

[–] Tippon@lemmy.dbzer0.com 1 points 1 year ago (1 children)

Brilliant :)

I've just been reading some of the other replies, and, yeah, it looks like containers are the way to go. I've got my data on separate drives, so that's easy enough to deal with, it's just the container side of things that's been confusing me.

I'll have a look at Podman, thanks :)

Like you say, I'm probably better off with a Debian fork, especially as I'm using Mint on my laptop, and should be on my PC if I can find alternatives to a few programs :)

[–] nonprofitparrot@lemmy.world 1 points 1 year ago

I've been working with podman for a few weeks, and it's functional but a bit harder. If you're a noobie I would recommend you stick to docker. If you're a FOSS enthusiast and up for a little more challenge podman is pretty cool.

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