I Could Block Ads. I Had No Idea What Else Was Happening.

By the end of my last post, the setup looked pretty solid. Pi-hole blocking ads. Unbound resolving DNS privately. Tailscale keeping everything accessible without exposing anything publicly. From the outside, the network looked healthy. The problem was I had absolutely no idea what was actually going on inside it. Pi-hole showed me DNS queries. That was it. Bandwidth? No idea. Traffic patterns? No idea. Which devices were chatting at 2am without telling anyone? Absolutely no idea. For someone who spends their working day talking about observability, visibility, and “you cannot manage what you cannot measure” — this was a bit embarrassing. The Obvious Answer Search for “Raspberry Pi network monitoring” and the internet will confidently point you at two things. Prometheus. Grafana. Rich dashboards. Beautiful graphs. The kind of setup that makes your home network feel like it deserves its own on-call rotation. I genuinely considered both. Then I did something that saved me a lot of pain. I