this post was submitted on 03 Jul 2024
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Hello! I was wondering if running periodically a script to automatically pull new images for all my containers is a good or a bad idea. I'd run it everyday at 5.00AM to avoid interruptions. Any tips?

EDIT: Thanks to everyone for the help! I'll install Watchtower to manage the updates

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[–] DARbarian@kbin.run 17 points 4 months ago (3 children)

Why not just let Watchtower do it for you?

[–] tubbadu@lemmy.kde.social 14 points 4 months ago (1 children)

Because I was today years old when I found out this beautiful piece of software exist :D

thank you very much!

[–] paris@lemmy.blahaj.zone 2 points 4 months ago

I use Watchtower and haven't had any major issues in the two(?) years I've been using it. Make sure you use persistent volumes for your containers and make sure you back up those volumes. If anything breaks, you can roll back to before the update.

If you don't use persistent volumes, you'll lose data when Watchtower takes down the image and replaces it with the newer one (which doesn't copy over ephemeral volumes).

I also recommend for database containers to use an image tag that won't update with breaking changes. Don't use postgres:latest, use postgres:15.2 or something like that (whatever the image you're using the database for recommends).

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