Linux server with UPS
Introduction
Having a server, it's a good practice to protect it from power supply failures. Solution for such case is to use UPS. Occasionally power down can last longer than UPS battery capacity and then it's recommended to gracefully shutdown server. In order to accomplish this, UPS needs to have some kind of connection with the server (common one is USB) and on the server dedicated software must be installed. Some UPS manufacturers have their own software, but if we have a less common model or an older UPS, than a good solution is to use open source software such as NUT (Network UPS Tools). Big advantage of NUT software is that we can use one software to manage UPS devices from different manufacturers. NUT software is in standard Debian repositories so it's easy to install and can be used on Proxmox hypervisor which is based on Debian. This way, we can have nice homelab hypervisor connected to UPS for protection against power supply issues. In this article I will be using UPS Socomec NPE-0650.
OS used: Debian 12
Software used: nut 2.8.0
Hardware used: UPS Socomec NPE-0650