Docker Container Monitoring Dashboard using Prometheus and Grafana

This assignment will help you monitor Docker containers with Prometheus and Grafana.

Architecture

Docker Containers
       |
   cAdvisor
       |
  Prometheus
       |
   Grafana

Step 1: Create Monitoring Directory

mkdir docker-monitoring
cd docker-monitoring

Step 2: Create Docker Compose File

vim docker-compose.yml

Add the following content:

version: '3'

services:

  cadvisor:
    image: gcr.io/cadvisor/cadvisor:latest
    container_name: cadvisor
    ports:
      - "8081:8080"
    volumes:
      - /:/rootfs:ro
      - /var/run:/var/run:ro
      - /sys:/sys:ro
      - /var/lib/docker/:/var/lib/docker:ro
    restart: unless-stopped

  prometheus:
    image: prom/prometheus
    container_name: prometheus
    ports:
      - "9090:9090"
    volumes:
      - ./prometheus.yml:/etc/prometheus/prometheus.yml
    restart: unless-stopped

  grafana:
    image: grafana/grafana
    container_name: grafana
    ports:
      - "3000:3000"
    restart: unless-stopped

Step 3: Create Prometheus Configuration

vim prometheus.yml

Add,

global:
  scrape_interval: 15s

scrape_configs:
  - job_name: 'cadvisor'

    static_configs:
      - targets: ['cadvisor:8080']

Step 4: Start Monitoring Stack

docker-compose up -d

Verify:

docker ps

Step 5: Access cAdvisor

Open:

http://localhost:8081

You should see Docker container metrics.

Step 6: Access Prometheus

open,

http://localhost:9090

Go to:

Status → Targets

Verify:

cadvisor = UP

Step 7: Access Grafana

Open:

http://localhost:3000

Default login:

Username: admin
Password: admin

OR set a new password.

Author
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Mahesh Wabale

Admin at DevOpsLover.com

Mahesh Wabale is the admin & author of this blog, Technology enthusiast with interest in DevOps, CICD, Spring Boot, Microservices Architecture He has more than 7 years of experience in IT industry, programming language and development stuff. He loves to share his experience with his blog.