VPS 4: Deploying a real time stats dashboard

Posted on January 31, 2025  •  2 minutes  • 293 words  • Other languages:  Español

• Glances with Docker Compose
• Secure with Caddy Basic Auth
  • Generate hashed password
  • Add to the service docker-compose.yml the caddy label
• Next lecture

This is the fourth part of my VPS blog series .

Glances with Docker Compose

It’s time to deploy our first project: a real-time server stats dashboard. We’ll use Glances , a lightweight Python-based tool.

1. Create a new project: Let’s call it vps-stats. By default, it will be in an Environment: Production
2. Add Resource: Choose Docker Compose
3. Paste the glances YAML : You need to adapt it a little bit for Coolify. Here’s the final working version:

version: '3'
services:
  monitoring:
    image: nicolargo/glances:latest
    restart: always
    pid: host
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - /etc/os-release:/etc/os-release:ro
    environment:
      - "GLANCES_OPT=-w"

4. Configure domain and deploy: stats.yourdomain.com:61208

Once live, visit stats.yourdomain.com to see your dashboard

Secure with Caddy Basic Auth

Why?

• The dashboard exposes server metrics that may or may not be sensitive, but shouldn’t be public.
• Is a nice exercise.

Generate hashed password

Caddy has a built-in command caddy hash-password

caddy hash-password
	[-p, --plaintext <password>]
	[-a, --algorithm <name>]

If by any reason you have Caddy installed in your machine, you can run it there. I don’t have Caddy on mine, but the VPS has Docker installed on it so we can:

• Log into the VPS:
  • ssh user-with-sudo@yourdomain.com
• Spin up a Docker container:
  • sudo docker run --rm caddy caddy hash-password -p "yoursupersecretpassword"
• Copy the bcrypt hash output (starts with $2b$).
• Logout.

Add to the service docker-compose.yml the caddy label

Now it should look something like this:

version: '3'
services:
  monitoring:
    image: 'nicolargo/glances:latest'
    restart: always
    pid: host
    volumes:
      - '/var/run/docker.sock:/var/run/docker.sock'
      - '/etc/os-release:/etc/os-release:ro'
    environment:
      - GLANCES_OPT=-w
    labels:
      - 'caddy_0.basicauth.0_YOURUSERHERE=YOURHASHEDPASSWORDHERE'

Restart the service and visit stats.yourdomain.com. You should now see an auth prompt.

Next lecture

VPS 5: Deploying a Full-Stack App