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How to access all files in docker volumes for backups? (feddit.de)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

8 comments fedilink hide all child comments

I am using restic for backups. I would like to use a non-root user to backup my docker volumes. As the files in the volumes have very different access rights and groups, accessing them is difficult without root rights.

Chowning the files doesn't help sustainably, as new files are created with a different group again.

What recommendation do you have to smoothly backup files from the docker volumes?

Tags #restic #backup #docker

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[–] [email protected] 3 points 11 months ago (1 children)

Add the DAC_READ_SEARCH capability to the restic binary (using setcap).This is what allows to read all files. Obviously this means being able to read all, all, files including shadow etc.

[–] [email protected] 1 points 11 months ago (1 children)

This is a great hint, thank you. I just discovered that the official restic docs recommend this method too

Thank you!

https://restic.readthedocs.io/en/latest/080_examples.html

[–] [email protected] 2 points 11 months ago

Oh that's good to see! Sorry if I didn't expand much before, I was writing from my phone.

Good luck :)