Seconded. Netdata has a generic and forgettable name but is powerful and easy to set up.

Open source, runs in docker or LXC. Web UI with more metrics than you will ever want, plus plugins. Support for alerts and some log aggregation, though I have not tried logging yet.

This means it’s working.

Wow. Lemmy’s user base has really pidgeon-holed itself in these comments. Just observing, not critcizing. Interesting to see. Privacy to most people here means privacy from big tech and government. Responses are also largely technology-focused solutions rather than personal practices.

I’m going to throw “Don’t give out your personal information” into the ring to round things out.