https://blog.margrop.net/en/categories/ubuntu/ Recent content in Ubuntu on Margrop Blog Hugo -- gohugo.io en-US Fri, 19 Jun 2026 10:58:00 +0800 https://blog.margrop.net/en/post/upgrade-ubuntu-via-agent/ Fri, 19 Jun 2026 10:58:00 +0800 https://blog.margrop.net/en/post/upgrade-ubuntu-via-agent/ <blockquote> <p><strong>TL;DR</strong></p> <p>A remote home-lab box had been sitting on Ubuntu 22.04.4 LTS (jammy, kernel 5.15) for a long time. After one sentence — &ldquo;upgrade the box at 192.168.103.182 to Ubuntu 24.04&rdquo; — Claude opened a tmux session to babysit the run, brought up a fallback sshd on port 1022 so a mid-upgrade sshd restart would not strand me, then drove <code>do-release-upgrade -f DistUpgradeViewNonInteractive</code> end to end. Twenty-five minutes later the host came back: kernel 6.8.0-124, every service still listening.</p> <p>This is not a tutorial on <code>do-release-upgrade</code>; the Ubuntu docs already cover that. This is about what an Agent does once it gets an SSH handle on a box, why it does each step, and which pitfalls you have to clear out of the way before letting it loose.</p> </blockquote>