this post was submitted on 02 Jul 2023
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[–] redcalcium@c.calciumlabs.com 6 points 1 year ago* (last edited 1 year ago) (2 children)

I also use kubernetes to run my Lemmy instance. Sadly, pictrs uses their own "database" file which can only be opened by a single pod because it refuse to run if the "database" lock is already acquired by another pod, making scaling up the number of pods impossible. I wish they use postgres instead of inventing their own database. I suspect this is one of the reasons why those large Lemmy instances have difficulty scaling up their server.

[–] Ducks@ducks.dev 1 points 1 year ago (1 children)

You mean pictrs can't scale, or the other pods cannot as well? I separated lemmy-ui, the backend, and pictrs into different pods. Haven't tried scaling anything yet though, but I did notice the database issue with pictrs when RollingRestart, had to switch to Recreate.

[–] redcalcium@c.calciumlabs.com 3 points 1 year ago (1 children)

Only pictrs that can't scale. Lemmy ui and backend seems to be stateless.

[–] Ducks@ducks.dev 1 points 1 year ago

Great to hear, that will make it super easy if I start allowing users on my instance.

[–] tyfi@wirebase.org 1 points 1 year ago

This is a really interesting observation. Curious if the devs are aware that this breaks simple scalability efforts