Thanks for sharing your home lab setup, I have settled on using Nagios for monitoring my servers, I like that I can put a lightweight agent on each node and have it run my custom checks and then report back to the central nagios dashboard. The dashboard handles notifications and tracking history graphs ect.

I do like the idea of having an uptime kuma instance running in docker as a second monitor, I will take a look at fly.io thanks for the suggestion.

Looking forward to more posts about your home lab. Are you using pfsence for your router/firewall?