Provisioning/README.md

# Provisioning

Central control plane for a Proxmox homelab cluster. Handles PXE booting bare metal, unattended Proxmox installation, cluster join, and host lifecycle management.

## What it does

1. Operator registers a host (MAC address + server type)
2. Operator triggers "rebuild with Proxmox"
3. Provisioning generates an ephemeral SSH key pair for this rebuild
4. Host PXE boots → dnsmasq responds → iPXE chain-loads the Proxmox installer
5. Installer fetches a per-host answer file (TOML) with the ephemeral public key
6. Proxmox installs unattended → post-install webhook fires
7. Host reboots → first-boot script phones home with IP + hardware ID
8. Provisioning SSHes in using the ephemeral key → `pvecm add` joins the cluster
9. Ephemeral key removed from both the host and database
10. Host registered in Infrastructure → marked ready

Admin dashboard shows real-time progress via SSE.

## Host States

```
registered → pxe_ready → pxe_booted → installing → installed → first_boot → joining → ready
                                                                                         ↓
                                                                                       failed
```

## Deploy

### Prerequisites

- Docker + Docker Compose on the target host
- Host must be on the same network as the bare-metal nodes (for PXE/DHCP)
- Registry access to `gitea.thewrightserver.net`

No static SSH keys required — Provisioning generates ephemeral keys per rebuild automatically.

### Setup

```bash
mkdir -p /opt/provisioning
cd /opt/provisioning

# Log in to the container registry
docker login gitea.thewrightserver.net

# Pull the compose file
curl -sO https://gitea.thewrightserver.net/josh/Provisioning/raw/branch/main/docker-compose.yml

# Pull example configs
curl -s https://gitea.thewrightserver.net/josh/Provisioning/raw/branch/main/deploy/provisioning.example.yaml -o provisioning.yaml
curl -s https://gitea.thewrightserver.net/josh/Provisioning/raw/branch/main/deploy/server-types.example.yaml -o server-types.yaml
```

### Configure

Edit `provisioning.yaml`:

| Key | Description |
|-----|-------------|
| `server.public_url` | LAN-reachable URL (e.g. `http://192.168.1.100:8080`) |
| `pxe.interface` | NIC name on the host (e.g. `eth0`, `enp2s0`) |
| `pxe.subnet` | LAN CIDR for proxy-DHCP |
| `proxmox.existing_node` | IP of any current cluster member |
| `proxmox.join_fingerprint` | From `pvecm status` on an existing node |
| `credentials.root_password_hash` | Generate with `mkpasswd -m sha-512` |
| `infrastructure.base_url` | URL of the Infrastructure service |
| `infrastructure.server_type_map` | Maps local type keys to Infrastructure IDs |

Edit `server-types.yaml` with your actual hardware types:

```yaml
server_types:
  minisforum-ms-01:
    display_name: "Minisforum MS-01"
    boot_disk: "/dev/nvme0n1"
    management_nic: "enp2s0"
    gpu: false
    hostname_prefix: "pve-ms"

  minisforum-um790:
    display_name: "Minisforum UM790 Pro"
    boot_disk: "/dev/nvme0n1"
    management_nic: "enp1s0"
    gpu: true
    hostname_prefix: "pve-um"
```

### Run

```bash
docker compose up -d
```

Dashboard at `http://<host>:8080`.

### Update

```bash
docker compose pull
docker compose up -d
```

## API

### Host Management

| Method | Path | Description |
|--------|------|-------------|
| GET | `/api/hosts` | List all hosts |
| GET | `/api/hosts/{id}` | Get host details |
| POST | `/api/hosts` | Register host (`hostname`, `mac`, `server_type`) |
| DELETE | `/api/hosts/{id}` | Remove host |
| POST | `/api/hosts/{id}/rebuild` | Start rebuild operation |

### Boot Flow (called by PXE-booting hosts)

| Method | Path | Description |
|--------|------|-------------|
| GET | `/ipxe/{mac}` | iPXE boot script |
| POST | `/api/boot/answer` | Proxmox answer file (TOML) |
| POST | `/api/hosts/{id}/installed` | Post-install webhook |
| GET | `/api/hosts/{id}/first-boot-script` | First-boot shell script |
| POST | `/api/hosts/{id}/phone-home` | First-boot reports IP + hardware ID |

### Dashboard

| Method | Path | Description |
|--------|------|-------------|
| GET | `/` | Host grid with live state tiles |
| GET | `/hosts/{id}` | Host detail + operation history |
| GET | `/events` | SSE stream |

## Development

```bash
# Run tests
go test ./...

# Run locally (PXE disabled)
cp deploy/provisioning.example.yaml provisioning.yaml
cp deploy/server-types.example.yaml server-types.yaml
# Edit provisioning.yaml: set pxe.enabled=false, infrastructure.base_url=""
go run ./cmd/provisioning -config provisioning.yaml

# Build binary
make build

# Build Docker image locally
make docker
```

## Architecture

```
cmd/provisioning/       Entry point, wiring, shutdown
internal/
  config/               YAML config + hot-reloaded server types (fsnotify)
  db/                   SQLite (WAL mode, embedded migrations)
  model/                Domain types (Host, Operation, Image, ServerType)
  store/                SQL stores (hosts, operations, locks, images)
  statemachine/         Table-driven host state machine
  events/               SSE fan-out hub
  pxe/                  dnsmasq supervisor, iPXE scripts, answer files, first-boot
  orchestrator/         Lifecycle driver (ephemeral keys, cluster join, infra registration)
  infra/                Infrastructure API client
  api/                  HTTP handlers (JSON API + HTML dashboard)
  httpserver/           chi router assembly
  web/                  Embedded static assets (CSS, JS)
```

## CI/CD

Gitea Actions workflow (`.gitea/workflows/build.yml`):
- Runs `go test` and `go vet` on every push to main
- Builds Docker image and pushes to `gitea.thewrightserver.net/josh/provisioning:latest`