Hi, I’ve completed a migration from phpBB3 to Discourse. For several hours the new install has performed flawlessly, now suddenly the server keeps falling over and returning a 500 error. Each time I need to reboot the server, then rebuild the app to access the site again. The last few times of goi…

Not sure if moving to a fresh server will help. You might run into the same issues, because you will need to rebake all posts. I’d rather try to temporarily upgrade your server to give it more memory. Did you enable swap on your server? If not, you should. Also, take a look at https://meta.discours…

Hmm, I would have expected it to start working again. Something is not right… :thinking: Sidekiq should be working in the background even though the server returns errors. An increasing number of enqueued jobs could be normal, as long the the count of processed jobs increased over night as well. Di…

The processed jobs aren’t increasing whilst the server is down. Each time I do a reboot / rebuild the process jobs increase for the 25-30 seconds the server is up, then they stop. When I do another reboot / rebuild cycle the number of processed jobs is the same as when the server crashes. When I …

Upgrading to an 8GB / 4CPU droplet. Because it’s running on SSD is enabling swap a good idea? Thanks for the post, yes I’ve read that one a few times now. It’s looking like memory may be the issues: # free -m total used free shared buff/cache available Mem: …

@gerhard thank you again for your assistance! Upgrading the RAM has got the site running, feels like such an obvious solution! I was relying on the DO dashboard that was telling me the servers RAM was only at 60% capacity, lesson learned there! It’s been running for 30 minutes without issue and s…

I’m glad that it’s working now. [图片] danmaby: Because it’s running on SSD is enabling swap a good idea? Yes, we always recommend enabling swap. Create a swapfile for your Linux server

This seems extreme now! We’re running an 8 GB / 4 core DO droplet that’s getting no traffic and the site keeps falling over. Is this likely to be down to the sidekiq queue? The queue is currently at 3.1 million records and growing, it’s processed 600k in the last 36 hours with all our outages. #…

It seems high to me. Did you determine what the newly created jobs are? Do you have a lot of failed jobs? That might point you to an issue too.

Hey @bartv thanks for the reply. The Critical queue has around 710k items, all of which are similar to: {"user_id"=>428778, "topic_id"=>433002, "input"=>"topic_notification_level_changed", "current_site_id"=>"default"} And the Default queue has around 2.4 million items with various ar…

I’m not familiar with the topic_notification_level_changed job. Is that the one that’s keeping your Unicorn workers busy? 10 jobs/second is very slow - I only experienced that when rebaking posts with a lot of graphics in them that needed resizing.

TBH I’m not sure how to check what’s keeping the Unicorn Workers busy? We didn’t include any images in the import, so this sounds a little concerning.

sidekiq 队列是否可能是 500 错误的原因？

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gerhard (Gerhard Schlager) 2018 年6 月 12 日 13:00 15

I’m glad that it’s working now.

Yes, we always recommend enabling swap. Create a swapfile for your Linux server

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sidekiq 队列是否可能是 500 错误的原因？

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