this post was submitted on 12 Aug 2023
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Question about backup (derpzilla.net)
submitted 1 year ago by Kwa@derpzilla.net to c/selfhosted@lemmy.world
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Hey guys,

I would like to setup some backups.

I have a raspberry at home and 2 VPS’s. I’m trying to setup borgmatic on my raspberry to back it up and the 2 VPS’s but I’m not sure this can be done.

Right now I’m looking to back up the raspberry and use rclone to mount one of the VPS and back it up. The issue is with the second VPS, it has MariaDB running and I can’t see how to back it up remotely (the port is not exposed publicly). I don’t find anything about tunneling in borgmatic. Am I forced to install borgmatic on the VPS to back it up? If I do this, how can I merge the back up with the other ones?

Actually should I do this or have 3 separate borg repositories?

Lastly, my raspberry uses rclone to push to S3 and I don’t want the keys to be accessible on the VPS’s, that’s why I’m trying to have borgmatic only on my raspberry.

Thanks for your help!

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[–] witten@lemmy.world 2 points 1 year ago* (last edited 1 year ago) (1 children)

borgmatic dev here. What I do is run borgmatic locally on each server that needs to get backed up. That's a whole lot easier IMO than setting up network filesystems / rclone or tunnels or screwing around with database dumps yourself, and potentially more reliable. So in your case, I'd run borgmatic on the VPS and then have it connect locally to your MariaDB database using borgmatic's native filesystem support. And then if you also backup the local files with that same VPS instance of borgmatic as well, there's nothing to "merge."

I'd generally recommend one Borg repository per source server / instance of borgmatic.

Lastly, my raspberry uses rclone to push to S3 and I don’t want the keys to be accessible on the VPS’s, that’s why I’m trying to have borgmatic only on my raspberry.

You could always have borgmatic backup to a local Borg repository on the VPS, and then run rclone on your trusted server to copy that repository to S3. Personally I'd probably just put the S3 keys on the VPS and lock it down so that I trust its security, but you do you. 😀

[–] Kwa@derpzilla.net 1 points 1 year ago

I see, thank you.

For now I went with the cron dump and the rclone. The only issue with this setup is that I can’t monitor the database dump easily. Thus, if the dump fails, borg will just backup the failed dump…

As for the VPS, of course, ideally, it’s secured enough. But as it is said, if the server is exposed to the Internet you cannot be sure of anything…