Get Labby running in 5 minutes

Install Labby

Download Labby from Google Play or open the web app at app.labbyapp.com. No account needed — just install and go.

The free tier gives you 2 service monitors. To use the Docker relay, Wake-on-LAN, and unlimited monitors, upgrade to Pro (one-time £3.99 purchase).

Deploy the Docker Relay

Run this single command on any Docker host on your home network:

docker run -d \
  --name labby-relay \
  --restart unless-stopped \
  --network host \
  -e RELAY_KEY=your-secret-key \
  miguelmolez/labby-relay:latest

The relay listens on port 9120 by default and runs in host networking mode so it can reach all services on your LAN and send Wake-on-LAN packets.

(Optional) External Access with Cloudflare Tunnel

To monitor your lab from outside your home network without port forwarding, use Cloudflare Tunnel (free). This creates a secure outbound connection from your network to Cloudflare's edge — no open ports, no dynamic DNS.

3a. Create the tunnel in Cloudflare

• Log in to the Cloudflare Zero Trust dashboard at one.dash.cloudflare.com
• Navigate to Networks → Tunnels
• Click Create a tunnel and select Cloudflared as the connector type
• Give the tunnel a name (e.g. labby-relay) and click Save tunnel
• On the install page, choose Docker — you'll see a token starting with eyJ.... Copy this token.
• Click Next to configure the public hostname:
  - Subdomain: relay   Domain: select your domain (e.g. yourdomain.com)
  - Service type: HTTP   URL: localhost:9120
• Click Save tunnel. Cloudflare will automatically create the DNS record for relay.yourdomain.com.

3b. Create the Docker Compose file

Create a docker-compose.yml that runs both the Labby relay and (optionally) the Cloudflare tunnel connector:

# docker-compose.yml
services:
  labby-relay:
    image: miguelmolez/labby-relay:latest
    restart: unless-stopped
    network_mode: host
    environment:
      - RELAY_KEY=your-secret-key

  cloudflared:
    image: cloudflare/cloudflared:latest
    restart: unless-stopped
    network_mode: host
    command: tunnel --no-autoupdate run
    environment:
      - TUNNEL_TOKEN=${TUNNEL_TOKEN}
    profiles:
      - tunnel

3c. Add your tunnel token

Create a .env file in the same directory as your docker-compose.yml. Paste the token you copied from the Cloudflare dashboard:

# .env
TUNNEL_TOKEN=eyJh...your-token-here

3d. Start everything

Run both the relay and tunnel together:

docker compose --profile tunnel up -d

Check both containers are running:

docker ps
# You should see both labby-relay and cloudflared running

Connect the App to Your Relay

Open Labby and connect it to the relay you just deployed:

• Go to Settings (gear icon)
• Tap Relay Configuration
• Enter your relay URL and secret key
• Tap Save

Start Monitoring

Tap the + button to add your first service. Enter the URL or IP address, choose an icon and colour, and hit save. Labby will start checking it immediately.

When you're away from home, health checks route through the relay automatically — your services stay monitored from anywhere.

Wake-on-LAN: For machines you want to power on remotely, add the MAC address in the service settings. You can then wake them with a single tap, even when away (the relay sends the magic packet on your behalf).