networknet

Networknet notebook

Field notes

Practical notes about building, securing and operating real systems.

Lab noteDNS & networking

DNS with a deliberate path

Pi-hole filtering, Unbound encrypted upstream resolution and CoreDNS: explicit boundaries and observable behavior.

Lab noteIoT & Prometheus

Giving home systems a common metrics language

Exporting solar, climate, smart-device and energy-meter signals from GoodWe, Daikin, Shelly and DSMR P1 into Prometheus—and making them useful in Grafana.