# Iron Legion Homelab Services Stack — Constraints

## Hard Constraints (Non-Negotiable)
1. **Bare metal over abstraction.** Direct deployments preferred. Compose files are acceptable as orchestration glue, but no Docker Swarm mode, no Kubernetes, no abstraction layers Bobby cannot `ssh` into and debug.
2. **No nginx.** Traefik is the sole edge router. No nginx reverse proxies, no nginx sidecars.
3. **No Tailscale serve/funnel.** Services bind to `0.0.0.0` on their assigned node and are reachable via Tailscale mesh IP + port. No `tailscale serve`, no `tailscale funnel`.
4. **Node assignments locked.** Services do not migrate between nodes without Bobby's explicit written direction.
5. **Patch upstream source** when loopback/bind restrictions block direct deployment. Do not re-architect around the constraint.

## Node Assignment Policy (as of 2026-05-25)
| Node | Role | Services Assigned |
|------|------|-------------------|
| **Neo** | Services node | Nextcloud AIO, Vaultwarden, Portainer (UI/mgmt) |
| **Bones** | Infrastructure node | Paperclip + Ollama + PostgreSQL, Technitium DNS (infra DNS) |
| **Mark44 (Hulkbuster)** | Heavy-lifting / GPU | Monitoring stack (Prometheus, Grafana, Beszel), media apps with transcode (Jellyfin) |
| **Mark5 (Suitcase)** | Research / light-task | Traefik (edge router — lightweight, always-on), Homepage (lightweight dashboard) |
| **Artemis** | AI Foreman / JARVIS | Hermes Agent, Ansible-pull control plane |

## Soft Constraints (Bobby Approval Required to Override)
- **Data residency:** All persistent volumes live on-node. No NFS, no Ceph, no distributed storage unless explicitly approved.
- **Secret management:** No plain-text secrets in compose files. Use `.env` files with `file:` mode 0600, or Vaultwarden if a secret store is needed.
- **Backup cadence:** Every service with persistent state must have a documented backup target. Default: daily rsync to Bones secondary storage.

## Environment Assumptions
- All nodes run Debian Trixie or compatible.
- Docker Engine (not Docker Desktop) is installed on all target nodes.
- Tailscale is up and meshed. All inter-node traffic is over Tailscale IPs.
- `docker compose` plugin (v2) available, not legacy `docker-compose` standalone.