this post was submitted on 28 Jun 2023
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[Update: Failed again] Update to 0.18.1-rc.1 tried and rolled back (lemmy.world)
submitted 1 year ago* (last edited 1 year ago) by ruud@lemmy.world to c/lemmyworld@lemmy.world
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We've upgraded lemmy.world to 0.18.1-rc.1 and rolled back that upgrade because of issues.

(If you had posted anything in those 10 minutes between upgrade and rollback, that post is gone. Sorry!)

The main issue we saw is that users can't login anymore. Existing sessions still worked, but new logins failed (from macos, ios and android. From linux and windows it worked)

Also new account creation didn't work.

I'll create an issue for the devs and retry once it's fixed.

Edit Contacted the devs, they tell me to try again with lemmy-ui at version 0.18.0. Will try again, brace for some downtime!

Edit 2 So we upgraded again, and it seemed to work nicely! But then it slowed down so much it was unuseable. There were many locks in the database. People reported many JSON errors. Sorry, we won't be on 0.18.1 any time soon I'm afraid..

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[โ€“] Finnagain@lemmy.world 2 points 1 year ago (1 children)

I'm not familiar with what the server architecture looks like, but is there a possibility of using a load balancer in front of the instance's server and swapping a "beta" server into the load balancer when you need to do testing? You could basically migrate your traffic with zero downtime, assuming Lemmy's architecture allows for it.

[โ€“] ruud@lemmy.world 1 points 1 year ago (1 children)

Well that doesn't differ much from what I do. I just copy the files to a second directory and test with that. Easy rollback. Downside is, that all data is lost between upgrade and rollback, which will be the same in the scenario you suggest.

[โ€“] Finnagain@lemmy.world 1 points 1 year ago

Ah, that's fair. Best of luck either way. This is the tough part of admin work. FWIW, the stability we've had thus far has been pretty impressive!