> So I turned to Netdata. A one liner on each server and we had super sexy and fast dashboard for each server. No birds eye view, but fine. I then spent maybe 3-4 days trying to figure out how to get alerting to work (just email, but fine) and get temperature readings (or something like that).

I work in Netdata on ML. Just wanted to mention that as of last release a parent node will show all children in the agent dashboard so if doing again as of today a parent netdata might have got you the birds eye view as a starting point https://github.com/netdata/netdata/releases/tag/v1.41.0#v141...

(of course we also have Netdata Cloud which would have probably worked too but maybe was not as built out 3 years ago as is now - but don't want to go into sales mode and get blasted :) )