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Ways to backup your docker volumes ? (alien.top)

submitted 11 months ago by [email protected] to c/[email protected]

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I bought a second hand NUC to have a little more horsepower to run various services. I have it connected to my NAS, but almost all of the docker volumes reside on the SSD in the NUC.

It would be nice to be able to backup those volumes to my NAS in case the NUC fails. I have Debian 12 running on it.

What are my options ? Should I just backup my docker volumes or does it make more sense to backup the entire NUC ? (I'm less tech savvy then I might appear. Please be generous with your explanation, I still have a lot to learn)

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[–] [email protected] 1 points 11 months ago

Those backing up bind mounted volumes, what user does your backup program run as? The data inside bind mounts can have very random user IDs depending on the container including files owned by root.
Does your backup have to run as root in order to capture all files and retain permissions?