Looks like it works.

Edit still see some performance issues. Needs more troubleshooting

Update: Registrations re-opened We encountered a bug where people could not log in, see https://github.com/LemmyNet/lemmy/issues/3422#issuecomment-1616112264 . As a workaround we opened registrations.

Thanks

First of all, I would like to thank the Lemmy.world team and the 2 admins of other servers @stanford@discuss.as200950.com and @sunaurus@lemm.ee for their help! We did some thorough troubleshooting to get this working!

The upgrade

The upgrade itself isn’t too hard. Create a backup, and then change the image names in the docker-compose.yml and restart.

But, like the first 2 tries, after a few minutes the site started getting slow until it stopped responding. Then the troubleshooting started.

The solutions

What I had noticed previously, is that the lemmy container could reach around 1500% CPU usage, above that the site got slow. Which is weird, because the server has 64 threads, so 6400% should be the max. So we tried what @sunaurus@lemm.ee had suggested before: we created extra lemmy containers to spread the load. (And extra lemmy-ui containers). And used nginx to load balance between them.

Et voilà. That seems to work.

Also, as suggested by him, we start the lemmy containers with the scheduler disabled, and have 1 extra lemmy running with the scheduler enabled, unused for other stuff.

There will be room for improvement, and probably new bugs, but we’re very happy lemmy.world is now at 0.18.1-rc. This fixes a lot of bugs.

  • Tontoz@lemmy.world
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    1 year ago

    Really like seeing posts like this that explain what’s going on. Thanks for all the hard work!

  • Wintersong@va11halla.bar
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    1 year ago

    Good work upgrading! I can’t imagine it being too easy with a big instance.

    I had issues with comments not federating to my own instance before this update (showing 0 for hours). Opening up this up now showed most of them right away if not all. Hopefully that means 0.18.1 fixed a fair few issues people had with federation.

  • F3F3N@lemmy.world
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    1 year ago

    A bit off topic, but does anyone else hate how when you click on a post and then go back, the page auto-resets to the top? Wish it would remember how far down you scrolled and return to that point.

  • flamekhan@lemmy.world
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    1 year ago

    Huge thanks to the lemmy.world team over the last couple of days to scale and maintain the instance! There’s a link for donating on the sidebar for lemmy.world - just a couple bucks a month can help us support this instance!

  • Magister@lemmy.world
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    1 year ago

    I cannot connect with Jerboa, it always says user or password incorrect 🙁

    Edit: worked after a few minutes

  • aysta@lemm.ee
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    1 year ago

    Well, I hope I’m not the only one but I cannot log in. It’s been 4 hours already. Something went wrong. I’m on Firefox mobile.

    –> few hours later everything is back to normal

    • dragontamer@lemmy.world
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      1 year ago

      You can send a reset password, and the link to reset the password will log you in as your password is updated.

      However, the login button remains broken, even after password reset. Still, this provides us a 2nd way in if your browser cache gets cleared.


      The XHR for the button reports back a 404 error, suggesting that login page just stopped existing after the update. I’m assuming that it will be an easy hotfix, just gotta fix the link to the POST form to point at wherever the login page went.

    • morph3ous@lemmy.world
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      1 year ago

      I am having the same issue. I’m in with Mlem, but I can not log in on the site. I even tried it with content blockers off in case there was a captcha or something being blocked.

      (Safari on iOS)

    • Octavius@lemmy.world
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      1 year ago

      This needs to be higher. It happens on all browsers and on jebora as far as I can tell.

    • It drove me nuts too and I hope admins remove the “clear your browser cache” advice from the homepage, because that will simply lock you out of your account if the login form is broken.

      Right now the login form seems to work again though? Can you try again?

      • MrNemobody@lemmy.world
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        1 year ago

        Didn’t work for me on Jerboa. I cleared the app data, but I’m I still not able to login.

        Edit: I’ve tried again just now and I could login on Jerboa.

        • Roman0@lemmy.shtuf.eu
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          1 year ago

          I have this issue on my own instance. Neither Jerboa or Liftoff can log in to my main account (no errors or anything), but for some reason my admin account (one that pretty much sees no activity) works just fine. Thunder seems to be the only app aside of the web ui that works. Maybe an 0.18 issue?

      • aysta@lemm.ee
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        1 year ago

        Unfortunately it does not, everyone having the same issue try to create account on different instance and comment on this bug in here.

      • AlmightySnoo 🐢🇮🇱🇺🇦@lemmy.world
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        1 year ago

        it has nothing to do with cookies (and my advice is to NOT clear your cookies if you have a working session), the login form is (was?) broken, the API endpoint for the login kept returning a 404 status code

    • hjeremy@lemm.ee
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      1 year ago

      It’s weird that people seem to be having very different experiences with this. Liftoff says it’s logged in for me on my ‘world’ account, but posting/checking account details doesn’t work - Jerboa won’t login, resetting the password works once on the web, but subsequent logins don’t work.

  • Olap@lemmy.world
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    1 year ago

    Let us know where donations can go, suspect a stacked docker-compose will reach limits very quickly

  • Aurix@lemmy.world
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    1 year ago

    When not overloaded the site works better now than ever. But in general this instancen is kind of unusable now as everything is too slow.