Home-Assistant

TL;DR The digital signage system was pulling weather from OpenWeatherMap, calendar events from Google Calendar, and device status from MQTT – three separate API keys, three separate failure modes. Home Assistant already had all of this data. I built an HA proxy service that exposes weather, forecasts, calendar events, temperature sensors, and arbitrary entity queries through a single Flask API backed by the Home Assistant REST API. Five new endpoints replaced three external dependencies. I also added API key authentication with role-based access control, wrote 37 tests, fixed MQTT addressing after a VLAN migration, and fought through 6 CI/CD fixes to get the pipeline deploying on self-hosted ARC runners. ...

TL;DR Home Assistant runs on k3s using hostNetwork: true for mDNS/SSDP device discovery. I implemented split DNS routing so it is accessible both externally via Traefik and internally via its host IP. Then I built a Proxmox Watchdog — a custom service that monitors all Proxmox hosts via their API and automatically power-cycles unresponsive nodes using TP-Link Kasa HS300 smart power strips. ...