This directory contains technical "cheat sheets" and operational guides for maintaining and troubleshooting the Observability Hub.
- k3s Operations Guide: Procedures for deployment, image sideloading, and data migration in the cluster.
- OpenBao Setup: Procedures for initialization, unsealing, and managing the secret store.
- OpenTelemetry: Standards for OTel implementation, signal naming, and "Pure Wrapper" philosophy.
- PostgreSQL Guide: Best practices for database ownership, user permissions, and TimescaleDB/PostGIS setup.
- Second Brain: Procedures for knowledge ingestion, schema records, and delta-sync management.
- Systemd Cheatsheet: Essential commands for monitoring, restarting, and troubleshooting native host services.
These notes are intended for quick reference during day-to-day operations or disaster recovery. For high-level architectural context, refer to the Architecture domain.