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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 1 points 1 year ago

@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.