Hi all. Hoping that someone will be able to help me resolve an issue that we are currently having on our forum :- https://forum.combustionpunks.co.uk This is a long story… but I want to give all info that may help resolve the issue, so please bear with me. Over the course of this you will notice that I do not have much experience with Ubuntu :frowning: Everything has been working swimmingly for quite sometime now :smiley: right up until yesterday evening. We are having a little rebrand, updated logos and that sort of thing, so yesterday I was in the admin panel uploading the new logos. I also noticed that we were a few versions behind so I run the updates, had to perform it manually following the instructions here:- [תמונה] Manually update Discourse and Docker image to latest Self-Hosting bookmark This guide provides step-by-step instructions for manually updating Discourse, the Docker container, and the Ubuntu operating system on a self-hosted setup. person_raising_hand Required user level: System Administrator warning SSH access to the server. If you self-host Discourse, you occasionally need to run a manual update via the command line to get the latest security releases and newest libraries. These updates are not picked up in admin/upgrade, which is why you’ll occa… eg cd /var/discourse git pull ./launcher rebuild app everything seemed to go fine, updates completed, logos uploaded and displaying, tried a few themes, went back to the original, then popped out to a social engagement related to the forum… yeah, I went to the pub for a meal with my mates. about 30 mins later while out, we noticed the forum was offline… small bit of panic, then notice that Digital Ocean having issues, so relaxed. Came back about 2 hours later, DO issues resolved, but forum still offline… no worries, I restarted the droplet, all came back on fine… 30 mins or so later it was offline again… next I thought it would be best to clear any other updates outstanding, so tried to update docker with wget -qO- https://get.docker.com/ | sh this didnt seem to do much. Rebuilt app ./launcher rebuild app I dont believe it has updated as when rebuilding app it is saying docker version 17.05.0-ce depreciated and when running docker version it is reporting 17.05.0-ce then noticed that just before forum was going off line we were getting messages along lines of:- Out of memory: kill process (convert) or sacrifice child Out of memory: kill process (ruby) or sacrifice child Ran Htop lots of instances of sidekiq , found a post about reducing amount of threads rebaked at a time - reduced from 80 to 2 - issues continued instances of convert running against JPEGs in var/www/discourse/public/uploads/default/original/ (dont know how to sdisplay rest of the string to see which images these are running against) CPU usage 100% - Ruby var/www/discourse/vendor/buundle/ruby/2.6.0/bin/unicorn -E Updated OS - now running Ubuntu 18.04 Docker still on 17.05.0-ce. Droplet resized from the 2GB 1vCPU 50GB ($10) to the 3GB 1vCPU 50GB ($15) issues continuing. Restarting the droplet or rebuilding discourse gets it back up and running for a short period (10 - 30 mins) before it goes offline again. Any help with this would be very much appriciated, many thanks in advance Matt

A while back there were some changes in how images are compressed. You’re probably getting slammed by images being processed. It should subside soon,but if you’ve got lots of images it could be a while. You can do a ps -ax Or top To see what’s running. Press q to quit top.

[תמונה] pfaffman: A while back there were some changes in how images are compressed. You’re probably getting slammed by images being processed. It should subside soon,but if you’ve got lots of images it could be a while Thanks @pfaffman I’ll let it run a little longer and see if it gets througj it and levels itself out a little

[תמונה] codinghorror: I do advise you to eventually update Docker when you get a chance. And when you do, remember to reboot after you do the upgrade docker. There’s no warning, and Docker didn’t work for me when I did an upgrade yesterday until I thought to reboot.

thanks very much guys. Issue is still occouring tho :frowning: ruby /vazr/www/discourse/vendor/bundle/ruby/2.6.0/bin/unicorn -E using 98% CPU at the moment , Forum unavailable number of images , not sure what you would term an aweful lot - there are quite a few, but we are not a huge forum. df showing 80% of the 50GB used, on the admin panel in discourse it shows 5.7GB upload the dovker update command I tried didnt appear to do anything, I have found instructions on how to install on Ubuntu 18, but not update… should I be following install directions? prior to reboot of droplet this morning there were no convert processes showing, after reboot there are now 5.utilising approx 50% of cpu and RAM, rest appears to be in use by Ruby, Sidekiq processes intermittantly using resources, procesor and RAM still getting maxed out all the time. Convert processes still getting killed due to being out of memory Do we think there is still a queue of work being done - would a furtehr droplet resize help get through that queue? Forum still only staying online upto 30mins at a time, often shorter.

not managed to resolve this, increasing droplet size to see if it can complete the picture resizing if thats what it is doing.

After you resize be sure to run discourse-setup to adjust memory parameters and rebuild (or destroy and start).

Discourse stopping working - CPU/RAM load?

תמיכה

codinghorror (Jeff Atwood) 7 בספטמבר,‏ 2019,‏ 8:16pm 4

You went through most of the proper troubleshooting we would recommend, good work. Are there an awful lot of images on your forum?

I do advise you to eventually update Docker when you get a chance.

נושא		תגובות	צפיות
Discourse-docker run with unicorn memory issue Self-hosting server-resources	6	1217	23 בדצמבר,‏ 2019
Down after Docker Update Self-hosting server-resources	6	765	6 בנובמבר,‏ 2020
Memory is running out and Discourse stops working Bug	74	15315	17 בפברואר,‏ 2015
Discourse Fails to update in the Admin UI - No matter what Self-hosting	31	1165	5 באוגוסט,‏ 2025
High Memory usage without traffic? Product Support	10	1371	1 ביוני,‏ 2022

Discourse stopping working - CPU/RAM load?

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