# Startup Checklist - House of Prayer Music Database

## Quick Health Check

Run this command to verify all services:

```bash
./scripts/health-check.sh
```

## Manual Service Verification

### 1. Frontend (Vite Dev Server)

- **Port**: 5100
- **Check**: `lsof -i:5100 -sTCP:LISTEN`
- **Start**: `cd frontend && npm run dev &`
- **Log**: Check output or `/tmp/frontend.log`

### 2. Backend (Node/Express API)

- **Port**: 8080
- **Check**: `lsof -i:8080 -sTCP:LISTEN`
- **Test**: `curl http://localhost:8080/api/songs`
- **Start**: `cd backend && node server.js &`

### 3. Nginx (Reverse Proxy + HTTPS)

- **Port**: 443 (HTTPS), 80 (HTTP redirect)
- **Check**: `sudo lsof -i:443 -sTCP:LISTEN`
- **Status**: `systemctl status nginx`
- **Restart**: `sudo systemctl restart nginx`

### 4. PostgreSQL Database

- **Port**: 5432
- **Check**: `sudo systemctl status postgresql`
- **Test**: `psql -U church_admin -d church_songlyric -c "SELECT COUNT(*) FROM songs;"`

## Common Issues & Solutions

### Issue: "Blocked request. This host is not allowed"

**Root Cause**: Vite's `allowedHosts` configuration not loaded or outdated frontend process

**Solution**:

1. Check `frontend/vite.config.js` has correct `allowedHosts` array
2. Kill old Vite process: `kill $(lsof -ti:5100)`
3. Restart frontend: `cd frontend && npm run dev &`
4. Test: `curl -H "Host: houseofprayer.ddns.net" http://localhost:5100/`

**Prevention**: Always restart frontend after config changes

### Issue: Frontend not accessible externally

**Checklist**:

- [ ] DNS resolves: `nslookup houseofprayer.ddns.net` → 170.254.17.146
- [ ] Firewall allows 443: `sudo ufw status | grep 443`
- [ ] Nginx running: `systemctl is-active nginx`
- [ ] SSL cert valid: `sudo certbot certificates`
- [ ] Frontend responds locally: `curl http://localhost:5100`

### Issue: Backend API 404 errors

**Checklist**:

- [ ] Backend process running: `ps aux | grep 'node server.js'`
- [ ] Port 8080 listening: `lsof -i:8080`
- [ ] Database connected: Check backend logs
- [ ] CORS configured for domain: See `server.js` allowedOrigins

## Configuration Files to Monitor

1. **frontend/vite.config.js** - Frontend dev server settings
   - `allowedHosts` must include domain and wildcards
   - `host: true` enables network access
   - Restart required after changes

2. **backend/server.js** - Backend API configuration
   - `allowedOrigins` in CORS middleware
   - Database connection settings
   - Port 8080

3. **nginx-ssl.conf** - Reverse proxy and SSL
   - Proxies `/` to frontend (5100)
   - Proxies `/api` to backend (8080)
   - SSL certificates location

4. **backend/.env** - Environment variables (if exists)
   - Database credentials
   - JWT secrets
   - Port settings

## Testing External Access

```bash
# From server (localhost)
curl -H "Host: houseofprayer.ddns.net" http://localhost:5100/

# From any device on network
curl http://192.168.10.130:5100/

# From internet (public)
curl https://houseofprayer.ddns.net
```

## Logs Location

- **Frontend**: Terminal output or `/tmp/frontend.log`
- **Backend**: Terminal output or `backend/logs/`
- **Nginx Access**: `/var/log/nginx/church-music-access.log`
- **Nginx Error**: `/var/log/nginx/church-music-error.log`
- **PostgreSQL**: `/var/log/postgresql/`

## Emergency Recovery

If site is completely down:

```bash
# Kill all processes
killall node
kill $(lsof -ti:5100)
kill $(lsof -ti:8080)

# Restart PostgreSQL
sudo systemctl restart postgresql

# Restart Nginx
sudo systemctl restart nginx

# Start backend
cd /media/pts/Website/Church_HOP_MusicData/new-site/backend
node server.js > /tmp/backend.log 2>&1 &

# Start frontend
cd /media/pts/Website/Church_HOP_MusicData/new-site/frontend
npm run dev > /tmp/frontend.log 2>&1 &

# Verify
sleep 3
lsof -i:5100 -i:8080 | grep LISTEN
```

## Production Deployment Notes

For production, replace Vite dev server with built static files:

```bash
# Build frontend
cd frontend
npm run build

# Serve with Nginx (update nginx-ssl.conf location / block)
# Point to: /media/pts/Website/Church_HOP_MusicData/new-site/frontend/dist
```

---

**Last Updated**: 2026-01-26  
**Site URL**: <https://houseofprayer.ddns.net>  
**Server IP**: 170.254.17.146