# Archipelago Troubleshooting Guide

This guide covers the 20 most common issues you may encounter with Archipelago, along with diagnostic commands and solutions.

## Connection & Access

### 1. Can't connect to the web UI

**Symptoms**: Browser shows "connection refused" or spins forever when accessing `http://<your-server-ip>`

**Diagnosis**:
```bash
# Check if the server is reachable on the network
ping <server-ip>

# SSH in and check Nginx
ssh archipelago@<server-ip>
sudo systemctl status nginx
sudo nginx -t

# Check if the backend is running
sudo systemctl status archipelago
curl -s http://localhost:5678/health
```

**Solutions**:
- Ensure you're on the same network (LAN) as the server
- If Nginx is down: `sudo systemctl restart nginx`
- If backend is down: `sudo systemctl restart archipelago`
- Check firewall: `sudo ufw status` — port 80 (HTTP) and 443 (HTTPS) must be allowed
- If the server IP changed, check your router's DHCP lease table or run `ip addr show` on the server

### 2. Login page loads but login fails

**Symptoms**: You see the login screen but entering the correct password shows an error

**Diagnosis**:
```bash
# Check backend logs
sudo journalctl -u archipelago --since "5 minutes ago" --no-pager

# Test the RPC endpoint directly
curl -s -X POST http://localhost:5678/rpc/v1 \
  -H 'Content-Type: application/json' \
  -d '{"method":"server.echo","params":{"message":"test"}}' | head -100
```

**Solutions**:
- Default password is `password123` — change it after first login
- Clear browser cookies and try again (stale session cookie)
- Restart the backend: `sudo systemctl restart archipelago`
- Check if the database is accessible: `ls -la /var/lib/archipelago/`

### 3. Web UI loads but shows blank white page

**Symptoms**: Browser loads but nothing renders, or you see a white screen

**Diagnosis**:
```bash
# Check if frontend files exist
ls -la /opt/archipelago/web-ui/index.html
ls -la /opt/archipelago/web-ui/assets/

# Check browser console (F12 > Console) for JavaScript errors
# Check Nginx error log
sudo tail -20 /var/log/nginx/error.log
```

**Solutions**:
- Redeploy the frontend: run the deploy script from the development machine
- Check if files exist in `/opt/archipelago/web-ui/` — if missing, the deploy didn't complete
- Clear browser cache (Ctrl+Shift+R or Cmd+Shift+R)
- Try a different browser or incognito mode

### 4. HTTPS certificate warning

**Symptoms**: Browser shows "Your connection is not private" or certificate error

**Solutions**:
- Archipelago uses a self-signed certificate by default — this is expected on first visit
- Click "Advanced" > "Proceed to site" (Chrome) or "Accept the Risk" (Firefox)
- For permanent fix, configure a domain name and use Let's Encrypt
- On kiosk mode, the certificate is auto-accepted

---

## App Issues

### 5. App won't start (container fails to launch)

**Symptoms**: Clicking "Start" on an app shows an error, or the app stays in "stopped" state

**Diagnosis**:
```bash
# Check container status
podman ps -a --filter "name=<app-id>"

# Check container logs
podman logs <app-id> --tail 50

# Check if the image exists
podman images | grep <app-id>

# Check available disk space
df -h /var/lib/archipelago
```

**Solutions**:
- If the image is missing: reinstall the app from the Marketplace
- If disk is full: run disk cleanup from Settings, or manually `podman system prune`
- If the container exits immediately: check logs for the root cause (usually missing config or permissions)
- Restart podman: `sudo systemctl restart podman`

### 6. App shows "unhealthy" status

**Symptoms**: App is running but shows a yellow or red health indicator

**Diagnosis**:
```bash
# Check container health
podman healthcheck run <app-id>

# Check container resource usage
podman stats <app-id> --no-stream

# Check container logs for errors
podman logs <app-id> --tail 100 | grep -i error
```

**Solutions**:
- Some apps take time to become healthy after starting (especially Bitcoin which needs to sync)
- Check if the app has enough resources (RAM, CPU)
- Restart the specific app from the UI or: `podman restart <app-id>`
- Check if dependent services are running (e.g., LND requires Bitcoin)

### 7. Bitcoin not syncing / stuck at a block height

**Symptoms**: Bitcoin node shows the same block height for an extended period

**Diagnosis**:
```bash
# Check Bitcoin logs
podman logs bitcoin-knots --tail 50

# Check if Bitcoin is connected to peers
podman exec bitcoin-knots bitcoin-cli -datadir=/data getpeerinfo | grep -c '"addr"'

# Check sync progress
podman exec bitcoin-knots bitcoin-cli -datadir=/data getblockchaininfo | grep -E "blocks|headers|verificationprogress"
```

**Solutions**:
- Initial sync takes 1-7 days depending on hardware — be patient
- Ensure the server has a stable internet connection
- Check disk space: Bitcoin requires 600GB+ for full chain
- If stuck: restart the container `podman restart bitcoin-knots`
- If peers = 0: check firewall allows port 8333 outbound
- Add manual peers: edit bitcoin.conf to add `addnode=` entries

### 8. LND won't connect to Bitcoin

**Symptoms**: LND shows errors about Bitcoin connection, or channels aren't working

**Diagnosis**:
```bash
# Check LND logs
podman logs lnd --tail 50

# Check if Bitcoin RPC is accessible from LND
podman exec lnd wget -qO- http://bitcoin-knots:8332/ 2>&1 | head -5

# Check LND status
podman exec lnd lncli getinfo 2>&1 | head -20
```

**Solutions**:
- Ensure Bitcoin is fully synced before starting LND
- Both containers must be on the same Podman network (`archy-net`)
- Check Bitcoin RPC credentials match what LND expects
- Restart both containers in order: Bitcoin first, then LND

---

## Backup & Recovery

### 9. Backup fails to create

**Symptoms**: Backup button shows an error, or backup file is empty

**Diagnosis**:
```bash
# Check disk space
df -h /var/lib/archipelago

# Check backup directory permissions
ls -la /var/lib/archipelago/backups/

# Check backend logs for backup errors
sudo journalctl -u archipelago --since "10 minutes ago" | grep -i backup
```

**Solutions**:
- Ensure sufficient disk space (backups can be large)
- Check permissions: backup directory should be owned by `archipelago` user
- Try creating a smaller backup (exclude app data)
- Restart the backend service and try again

### 10. Can't restore from backup

**Symptoms**: Restore process fails or data doesn't appear after restore

**Diagnosis**:
```bash
# Verify backup file integrity
file /path/to/backup.archipelago
ls -la /path/to/backup.archipelago

# Check backend logs during restore
sudo journalctl -u archipelago -f
```

**Solutions**:
- Ensure the backup file is not corrupted (check file size is reasonable)
- Passphrase must match what was used during backup creation
- Stop all running apps before restoring
- After restore, restart the backend: `sudo systemctl restart archipelago`

---

## System Updates

### 11. System update fails

**Symptoms**: Update button shows an error, or update process hangs

**Diagnosis**:
```bash
# Check internet connectivity
curl -s https://start9.com > /dev/null && echo "Internet OK" || echo "No internet"

# Check backend logs
sudo journalctl -u archipelago --since "15 minutes ago" | grep -i update

# Check disk space (updates need temporary space)
df -h /
```

**Solutions**:
- Ensure stable internet connection during updates
- Ensure at least 2GB free disk space
- If update hangs: wait 10 minutes, then restart the backend
- Do NOT power off during an update — this can corrupt the system
- If system is in a bad state after failed update: boot from the USB installer and select "Repair"

### 12. Server won't boot after update

**Symptoms**: Server doesn't respond after a system update

**Solutions**:
- Wait 5 minutes — the first boot after update may take longer
- If still unresponsive: connect a monitor/keyboard to check boot messages
- Try the recovery mode: boot from USB installer and select "Repair"
- As a last resort: reflash the USB and restore from backup

---

## Kiosk Mode

### 13. Kiosk display shows black screen

**Symptoms**: Connected monitor shows black screen instead of the Archipelago UI

**Diagnosis**:
```bash
# SSH in and check kiosk service
sudo systemctl status archipelago-kiosk

# Check if X11/Wayland is running
ps aux | grep -E "(Xorg|weston|chromium|firefox)"

# Check display output
ls /dev/dri/
xrandr --query 2>/dev/null || echo "No display server"
```

**Solutions**:
- Restart the kiosk service: `sudo systemctl restart archipelago-kiosk`
- Check HDMI cable is securely connected
- Try a different HDMI port or cable
- Check if the display is set to the correct input source
- Review kiosk logs: `sudo journalctl -u archipelago-kiosk --since "5 minutes ago"`

### 14. Kiosk display is stuck or frozen

**Symptoms**: Kiosk shows the UI but it's unresponsive to touch/mouse

**Solutions**:
- The watchdog service should auto-restart frozen kiosk — wait 30 seconds
- SSH in and restart: `sudo systemctl restart archipelago-kiosk`
- Check if the backend is responsive: `curl -s http://localhost:5678/health`
- If backend is down too, restart everything: `sudo systemctl restart archipelago archipelago-kiosk`

---

## Network & Connectivity

### 15. Tor address not available

**Symptoms**: Settings shows "Tor: Not configured" or the .onion address is missing

**Diagnosis**:
```bash
# Check Tor container
podman ps --filter "name=tor"
podman logs tor --tail 20

# Check if Tor hostname file exists
cat /var/lib/archipelago/tor/hidden_service/hostname 2>/dev/null
```

**Solutions**:
- Tor takes 30-60 seconds to bootstrap — wait and refresh
- If Tor container is stopped: start it from the Apps page
- Check that the Tor data directory exists and has correct permissions
- Restart Tor: `podman restart tor`

### 16. Peers can't reach my node

**Symptoms**: Federation peers show "unreachable" status

**Diagnosis**:
```bash
# Check if Tor is running (needed for peer connectivity)
podman ps --filter "name=tor"

# Check your Tor address
cat /var/lib/archipelago/tor/hidden_service/hostname

# Test connectivity from the server side
curl -s http://localhost:5678/rpc/v1 \
  -H 'Content-Type: application/json' \
  -d '{"method":"node.tor-address","params":{}}' | head -50
```

**Solutions**:
- Ensure Tor is running (required for peer-to-peer communication)
- Tor circuits can be slow — connections may take 30+ seconds
- Share your correct .onion address with peers
- Both nodes must have Tor running and be on the same federation

### 17. DNS resolution issues

**Symptoms**: Apps can't reach external services, container downloads fail

**Diagnosis**:
```bash
# Test DNS from the server
nslookup google.com
dig google.com

# Check DNS configuration
cat /etc/resolv.conf

# Test from within a container
podman exec bitcoin-knots nslookup seed.bitcoin.sipa.be
```

**Solutions**:
- Configure DNS from Settings > Network: try Cloudflare (1.1.1.1) or Google (8.8.8.8)
- If using custom DNS, verify the server addresses are correct
- Restart networking: `sudo systemctl restart systemd-resolved`

---

## Performance & Resources

### 18. Server is very slow / high CPU usage

**Symptoms**: Web UI is slow to respond, apps are laggy

**Diagnosis**:
```bash
# Check CPU and memory usage
top -bn1 | head -15

# Check per-container resource usage
podman stats --no-stream

# Check disk I/O
iostat -x 1 3
```

**Solutions**:
- Bitcoin initial sync uses heavy CPU — this is normal and temporary
- Check which container is using the most resources with `podman stats`
- Stop apps you don't need
- If RAM is full: add swap space or upgrade hardware
- Consider using an SSD if running on HDD (massive I/O improvement)

### 19. Disk full

**Symptoms**: Apps fail, UI shows disk warning, new installs fail

**Diagnosis**:
```bash
# Check disk usage
df -h /var/lib/archipelago

# Find largest directories
du -sh /var/lib/archipelago/*/ | sort -rh | head -10

# Check Podman image/container sizes
podman system df
```

**Solutions**:
- Run disk cleanup from Settings
- Remove unused app data: `podman system prune -a` (WARNING: removes all stopped containers and unused images)
- Move Bitcoin data to external drive if chain data is too large
- Check for large log files: `du -sh /var/log/*/ | sort -rh`
- Consider upgrading to a larger disk

### 20. WebSocket disconnections / "Reconnecting..." banner

**Symptoms**: UI shows a reconnecting indicator, real-time updates stop

**Diagnosis**:
```bash
# Check backend health
curl -s http://localhost:5678/health

# Check backend logs for WebSocket errors
sudo journalctl -u archipelago --since "5 minutes ago" | grep -i websocket

# Check system resources (WebSocket can drop under load)
free -h
```

**Solutions**:
- Brief disconnections are normal during backend restarts — the UI auto-reconnects
- If persistent: check if the backend is overloaded (high CPU/RAM)
- Restart the backend: `sudo systemctl restart archipelago`
- Check Nginx WebSocket proxy config: `/etc/nginx/sites-available/archipelago` must include `proxy_set_header Upgrade $http_upgrade`
- If on WiFi, try wired Ethernet for more stable connectivity

---

## General Maintenance

### Quick Health Check Commands

```bash
# Overall system status
sudo systemctl status archipelago nginx

# All containers
podman ps -a

# Disk usage
df -h /var/lib/archipelago

# Memory usage
free -h

# Recent errors
sudo journalctl -u archipelago --since "1 hour ago" -p err

# Backend health endpoint
curl -s http://localhost:5678/health
```

### Emergency Recovery

If the system is completely unresponsive:

1. **Power cycle**: Hold power button for 10 seconds, then turn back on
2. **Wait 5 minutes**: Services take time to start, especially if containers need to recover
3. **SSH in**: If web UI is down but SSH works, restart services manually
4. **USB recovery**: Boot from the Archipelago USB installer and select "Repair"
5. **Clean install + restore**: As last resort, do a fresh install and restore from backup

### Collecting Diagnostic Information

If you need to report an issue, collect this information:

```bash
# System info
uname -a
cat /etc/os-release

# Service status
sudo systemctl status archipelago nginx

# Recent logs (last 100 lines)
sudo journalctl -u archipelago --no-pager -n 100

# Container status
podman ps -a

# Disk and memory
df -h
free -h

# Network
ip addr show
```