LibreNMS has been a faithful companion for years now. It quietly handles the monitoring of my servers, devices, and services without demanding much in return - exactly what you want from a tool whose job is to watch over everything else. It's a solid alternative to heavier solutions like Zabbix, and it gives you alerts, data, and graphs on virtually anything reachable over SNMP. I usually install it on a host that is not reachable from the outside, then let it poll all the devices through a VPN: a single observation point, clean perimeter. The ability to create multiple dashboards - and to filter them by user - has also let me give clients a transparent window onto their own servers. Transparency, in my experience, is always the better long-term bet. Together with Uptime-Kuma (and the good old Nagios/Munin pair), LibreNMS lives in a FreeBSD jail on my monitoring servers and just does its job. This post walks through a plain installation of LibreNMS on FreeBSD: package-based, no…
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