# Cloudflare Multi-Tunnel Deployment Summary

Complete implementation of Cloudflare Tunnel setup for Proxmox hosts with all recommended enhancements.

## ✅ What's Included

### 1. Separate Tunnels Per Host ✅
- `tunnel-ml110` → ml110-01.d-bis.org → 192.168.11.10:8006
- `tunnel-r630-01` → r630-01.d-bis.org → 192.168.11.11:8006
- `tunnel-r630-02` → r630-02.d-bis.org → 192.168.11.12:8006

### 2. Cloudflare Access Integration ✅
- Complete setup guide for SSO/MFA
- Step-by-step instructions
- Security best practices

### 3. Health Monitoring ✅
- Automated health checks
- Continuous monitoring script
- One-time health check utility

### 4. Alerting ✅
- Email notifications
- Webhook support (Slack, Discord, etc.)
- Configurable alert thresholds

### 5. Auto-Recovery ✅
- Automatic tunnel restart on failure
- Systemd service with restart policies

## 📁 File Structure

```
scripts/cloudflare-tunnels/
├── README.md                          # Main documentation
├── DEPLOYMENT_SUMMARY.md              # This file
│
├── configs/                           # Tunnel configurations
│   ├── tunnel-ml110.yml              # ml110-01 config
│   ├── tunnel-r630-01.yml            # r630-01 config
│   └── tunnel-r630-02.yml            # r630-02 config
│
├── systemd/                           # Systemd services
│   ├── cloudflared-ml110.service      # ml110 service
│   ├── cloudflared-r630-01.service   # r630-01 service
│   └── cloudflared-r630-02.service   # r630-02 service
│
├── scripts/                           # Management scripts
│   ├── setup-multi-tunnel.sh          # Main setup script
│   ├── install-tunnel.sh              # Install single tunnel
│   ├── monitor-tunnels.sh             # Continuous monitoring
│   ├── check-tunnel-health.sh         # Health check
│   ├── alert-tunnel-failure.sh        # Alerting
│   └── restart-tunnel.sh              # Restart utility
│
├── monitoring/                        # Monitoring configs
│   ├── health-check.conf              # Health check config
│   └── alerting.conf                  # Alerting config
│
└── docs/                              # Documentation
    ├── CLOUDFLARE_ACCESS_SETUP.md     # Access setup guide
    ├── TROUBLESHOOTING.md             # Troubleshooting
    └── MONITORING_GUIDE.md            # Monitoring guide
```

## 🚀 Quick Start

### Step 1: Create Tunnels in Cloudflare

1. Go to Cloudflare Zero Trust → Networks → Tunnels
2. Create three tunnels:
   - `tunnel-ml110`
   - `tunnel-r630-01`
   - `tunnel-r630-02`
3. Copy tunnel tokens/credentials

### Step 2: Run Setup Script

```bash
cd scripts/cloudflare-tunnels
./scripts/setup-multi-tunnel.sh
```

The script will:
- Install cloudflared (if needed)
- Copy configuration files
- Install systemd services
- Prompt for tunnel credentials

### Step 3: Configure DNS Records

In Cloudflare Dashboard → DNS → Records:

| Type | Name | Target | Proxy |
|------|------|--------|-------|
| CNAME | `ml110-01` | `<tunnel-id>.cfargotunnel.com` | 🟠 Proxied |
| CNAME | `r630-01` | `<tunnel-id>.cfargotunnel.com` | 🟠 Proxied |
| CNAME | `r630-02` | `<tunnel-id>.cfargotunnel.com` | 🟠 Proxied |

### Step 4: Configure Cloudflare Access

Follow the guide: `docs/CLOUDFLARE_ACCESS_SETUP.md`

### Step 5: Start Monitoring

```bash
# One-time health check
./scripts/check-tunnel-health.sh

# Continuous monitoring (daemon)
./scripts/monitor-tunnels.sh --daemon
```

## 📋 Pre-Deployment Checklist

Before running setup:

- [ ] Cloudflare account with Zero Trust enabled
- [ ] Domain `d-bis.org` managed by Cloudflare
- [ ] VMID 102 exists and is running
- [ ] Network connectivity from VMID 102 to Proxmox hosts verified
- [ ] Tunnels created in Cloudflare dashboard
- [ ] Tunnel tokens/credentials ready

## 🔧 Configuration

### Tunnel Configuration Files

Each tunnel has its own config file in `configs/`:
- `tunnel-ml110.yml` - ml110-01 configuration
- `tunnel-r630-01.yml` - r630-01 configuration
- `tunnel-r630-02.yml` - r630-02 configuration

**Before use:**
1. Replace `<TUNNEL_ID_*>` with actual tunnel IDs
2. Ensure credentials files are in `/etc/cloudflared/`

### Systemd Services

Each tunnel runs as a separate systemd service:
- `cloudflared-ml110.service`
- `cloudflared-r630-01.service`
- `cloudflared-r630-02.service`

**Features:**
- Auto-restart on failure
- Security hardening
- Resource limits
- Proper logging

## 🔒 Security Features

### Cloudflare Access
- ✅ SSO/MFA protection
- ✅ Device posture checks
- ✅ IP allowlisting
- ✅ Country blocking
- ✅ Session management

### Tunnel Security
- ✅ Separate tunnels per host (isolation)
- ✅ Encrypted connections
- ✅ No exposed ports on gateway
- ✅ Self-signed cert handling

## 📊 Monitoring

### Health Checks

Run comprehensive health checks:
```bash
./scripts/check-tunnel-health.sh
```

Checks:
- Service status
- DNS resolution
- HTTPS connectivity
- Internal connectivity
- Log errors

### Continuous Monitoring

Run continuous monitoring:
```bash
./scripts/monitor-tunnels.sh --daemon
```

Features:
- Automatic health checks
- Auto-restart on failure
- Alerting on failures
- Logging to file

## 🚨 Alerting

### Configure Alerts

Edit `monitoring/alerting.conf`:
```bash
ALERT_EMAIL="admin@yourdomain.com"
ALERT_WEBHOOK_URL="https://hooks.slack.com/..."
```

### Test Alerts

```bash
./scripts/alert-tunnel-failure.sh ml110 service_down
```

## 📚 Documentation

- **README.md** - Main documentation
- **CLOUDFLARE_ACCESS_SETUP.md** - Complete Access setup guide
- **TROUBLESHOOTING.md** - Common issues and solutions
- **MONITORING_GUIDE.md** - Monitoring setup and usage

## 🛠️ Management Commands

### Start/Stop Services

```bash
# Start all tunnels
systemctl start cloudflared-ml110 cloudflared-r630-01 cloudflared-r630-02

# Stop all tunnels
systemctl stop cloudflared-ml110 cloudflared-r630-01 cloudflared-r630-02

# Restart specific tunnel
./scripts/restart-tunnel.sh ml110
```

### Check Status

```bash
# All tunnels
systemctl status cloudflared-*

# Specific tunnel
systemctl status cloudflared-ml110

# Health check
./scripts/check-tunnel-health.sh
```

### View Logs

```bash
# All tunnels
journalctl -u cloudflared-* -f

# Specific tunnel
journalctl -u cloudflared-ml110 -f

# Last 100 lines
journalctl -u cloudflared-ml110 -n 100
```

## ✅ Verification

After deployment, verify:

1. **DNS Resolution:**
   ```bash
   dig ml110-01.d-bis.org
   dig r630-01.d-bis.org
   dig r630-02.d-bis.org
   ```

2. **Service Status:**
   ```bash
   systemctl status cloudflared-*
   ```

3. **HTTPS Access:**
   ```bash
   curl -I https://ml110-01.d-bis.org
   ```

4. **Cloudflare Access:**
   - Open browser
   - Navigate to `https://ml110-01.d-bis.org`
   - Should see Cloudflare Access login

## 🎯 Next Steps

After deployment:

1. ✅ Configure Cloudflare Access (see `docs/CLOUDFLARE_ACCESS_SETUP.md`)
2. ✅ Set up monitoring (see `docs/MONITORING_GUIDE.md`)
3. ✅ Configure alerting (edit `monitoring/alerting.conf`)
4. ✅ Test all three Proxmox hosts
5. ✅ Review access logs regularly

## 📞 Support

For issues:
1. Check [Troubleshooting Guide](docs/TROUBLESHOOTING.md)
2. Run health check: `./scripts/check-tunnel-health.sh`
3. Review logs: `journalctl -u cloudflared-*`
4. Check Cloudflare dashboard for tunnel status

## 🎉 Summary

This implementation provides:

✅ **Separate tunnels per host** - Better isolation  
✅ **Cloudflare Access** - SSO/MFA protection  
✅ **Health monitoring** - Automated checks  
✅ **Alerting** - Email/webhook notifications  
✅ **Auto-recovery** - Automatic restart on failure  
✅ **Complete documentation** - Setup and troubleshooting guides  

All recommended enhancements are included and ready to use!

