Maintenance log of Discourse instance @xjtu.app

Apr 17, 2026, 8:19:09 PM (Asia/Singapore)
SSH into server,
run dis-boot-res webxj to update Discourse
then clear ssh log record
then add https://meta.discourse.org/t/testing-boosts-on-meta/399835 to plugins section of /var/discourse/containers/webxj.yml
then run dis-boot-res webxj again and enable the new plugin.
As the login banner indicates the packages of the Ubuntu 22.04 server are not up-to-date,
run apt update && apt upgrade
but it failed with connection too-slow and at-last timeout to archive.ubuntu.com's IPv6 address.
So I substitute the URL archive.ubuntu.com with mirrors.ocf.berkeley.edu in /etc/apt/sources.list
And then update whole system packages again.

Side note:
The performance of the VPS is too low. It takes too much time to dis-boot-res rebuild and restart the Discourse container. The disk I/O and CPU are too weak. The RAM is 4GB, somewhat disproportionate to 6 cores vCPU. May lead to slow loading.

Broken things:

• Related topics recommendation relies on LLM embeddings. Check logs: https://xjtu.app/sidekiq/retries
• Email login/registration. Fill in related settings in /var/discourse/containers/webxj.yml and rebuild container dis-boot-res webxj. See https://meta.discourse.org/t/troubleshoot-email-on-a-new-discourse-install/16326