EXPLORE — THE WHOLE YGG SYSTEM
Explore
A chronological stream of everything — guides, troubleshooting, notes, analyses, projects and curated external sources.
troubleshooting GNOME will not start after upgrade: recovering the Wayland session After the Debian 12 → 13 upgrade the login ends on a black screen and the session drops back to GDM. Diagnosis, the actual cause and a permanent fix. guide ESP32 sensor: from prototype to stable operation From breadboard to a sensor that runs for months untouched: ESPHome firmware, MQTT discovery into Home Assistant, deep sleep + OTA. reference Cheat sheet: nftables rules for a home network The reference card taped up in my server room — commands, tables and NAT masquerade. note Postfix and SPF macros: the detail that breaks delivery A short note after one rough weekend of undelivered mail. project Self-hosted monitoring Prometheus + Grafana across the whole home and lab infrastructure. The goal: see problems before they surface — and understand how the systems behave over time. link Cadastre open data: what the dataset actually contains The best breakdown of the dataset contents I have read so far. Worth saving. explainer How DNS delegation works and why it matters DNS is a delegated tree: every zone can hand responsibility one level down. Understand that and you understand why changes propagate slowly and where to look for faults.