# Recovery and Support Runbook

Use this when users report they cannot reach the web UI.

## User-Facing Recovery
1. Power cycle device.
2. Try `http://pinail.local:5000`.
3. If unavailable, check router client list for `pinail` host and use IP.
4. If still unavailable, hold setup/reset button (5-10s) to force setup AP.
5. Rejoin `piNail-Setup-XXXX` and re-enter WiFi credentials.

## Technician Quick Checks (SSH)
- Service status:
  - `sudo systemctl status pinail2`
- Logs:
  - `sudo journalctl -u pinail2 -n 150 --no-pager`
- WLAN status:
  - `ip addr show wlan0`
  - `iwgetid`
- Reachability:
  - `ping -c 3 192.168.0.1`

## Common Failure Cases
- Wrong SSID/password:
  - force setup mode, re-enter credentials.
- Router changed subnet:
  - use mDNS or router client list to discover new IP.
- Stale browser cache:
  - hard refresh (`Ctrl+Shift+R` / `Cmd+Shift+R`).
- Service stuck after network transitions:
  - `sudo systemctl restart pinail2`.

## Recommended Production Defaults
- DHCP + router reservation.
- mDNS hostname advertised (`pinail.local`).
- Physical setup/reset button available without opening enclosure.