NUT (Network UPS Tools) is the go-to open-source solution for UPS monitoring on Linux — but it takes some know-how to set up properly, especially with hardware that isn't auto-detected out of the box.
This detailed guide covers everything from finding the right driver, dealing with stubborn read-only settings, configuring automatic shutdowns, and setting up email alerts so you know when things go wrong. There's even a section on how to safely test your shutdown logic before a real power cut hits.
Great resource for anyone running a homelab or Linux-based home server. 👇
https://www.alanbonnici.com/2026/03/setting-up-nut-ups-software-on-linux.html
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