Powered on is no longer enough
At first I wanted to see applications running. Then I started asking how much they ask of the machine: CPU, memory, temperatures, storage. On a 2016 computer these questions are practical. I like being able to observe the system and connect the numbers to what I am doing with it.
I changed my mind about monitoring
I installed Netdata and liked its wealth of information and alerts. On my MacBook, though, it used too much CPU. I moved to Beszel for lighter monitoring. That choice came from use: I wanted resources left for the applications I had started the server to host.
I still find Netdata interesting. This experience taught me to choose according to my machine and what I need to see. I can really like a dashboard and still decide it asks for more than I want to give it.
Different questions, different tools
With Scrutiny I observe disk health information and temperature. With Uptime Kuma I check whether websites and services are reachable. I like how each tool helps me look at a specific aspect: machine condition, disk condition and availability of what I use.
I am also learning what those signals cannot tell me. A disk with reassuring readings today can still fail; a reachable service can have other problems. Graphs help me ask questions and act, while backups remain a separate responsibility.
The automations I enjoy building
A Telegram bot alerts me when CPU stays at maximum for around ten minutes and sends temperature warnings. It reports connection interruptions and recovery with the elapsed time. I can also ask for server status, temperatures and warnings. I like getting information without always sitting in front of a dashboard.
These are the automations I find most satisfying: small, built around something I actually need. I use an external service like Telegram because its convenience makes sense to me here. I am looking for a balance I can live with every day.
Learning when to look and when to let it run
I could always add another graph. I prefer looking for alerts that tell me when something needs attention and information that helps me understand it. I want the lab to leave me room to do other things as well as look after the lab itself.
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