Munin (https://munin-monitoring.org/) It’s not very pretty but quite easy to setup and doesn’t eat so much resources as a Prometheus/grafana setup

Important to know: the local copy is read only…so you can’t modify existing or create new entries if you aren’t connected to the server

Ohh you are in for a treat 🫠

Did you get it to run? I tried it for about a day or so, and only got it kind of working