this post was submitted on 01 Nov 2023
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How do you backup your docker containers when so much is owned by root? (alien.top)
submitted 1 year ago by SillyLilBear@alien.top to c/main@selfhosted.forum
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I am trying to setup a restic job to backup my docker stacks, and with half of everything owned by root it becomes problematic. I've been wanting to look at podman so everything isn't owned by root, but for now I want to backup my work I built.

Also, how do you deal with some docker containers having databases. Do you have to create exports for all docker containers that have some form of database?

I've spent the last few days moving all my docker containers to a dedicated machine. I was using a mix of NFS and local storage before, but now I am doing everything on local NVME. My original plan was having everything on NFS so I would worry about backups there, and I might go back to that.

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[โ€“] esturniolo@alien.top 1 points 1 year ago (1 children)

KISS method: Script that copy the data on the fly to the /tmp dir, compress it, encrypt it and move it to destination using rclone. Running every hour, 4 hours or 24 hours, depending the container.

Never fails. The backups nor the restore.

[โ€“] atheken@alien.top 1 points 1 year ago

I mean, snapshotting and piping it to an rclone mount is arguably simpler than trying to do your own ad hoc file syncronization, also does not require 2x the storage space.