# macmini1 — 10.0.0.4
The network brain + standby edge.
- OS: Debian 13 Trixie (Mac Mini Late 2012, i5, 15 GB RAM) - Reach it: SSH as `dietpi`
## What it does
1. LAN DHCP — hands out IP addresses (pool `10.0.0.100`–`.254`). 2. DNS backup — Pi-hole on `:53` (web `:8091`) + unbound. 3. Standby Caddy edge — serves sites if pi4's edge is down (LAN failover via dual-A DNS). Certs are rsync'd nightly from pi4. 4. Authentik — the single-sign-on (SSO) identity provider. 5. Books & comics — Calibre-web (books) + Komga (comics). 6. audiocynic Ghost — the AudioCynic blog.
## Key facts
- Docker lives under `/home/dietpi/docker/`. - The standby edge binds `:443` only; its nginx keeps `:80`. - The *arr stack (Sonarr/Radarr/qBit) moved to windows `.7` in Aug 2026.