Grafana

Docker Container Monitoring Dashboard using Prometheus and Grafana – Complete Setup Guide

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Introduction:

Docker Container Monitoring Dashboard is one of the most important monitoring solutions for DevOps engineers. By using Prometheus, Grafana, and cAdvisor, you can monitor Docker container performance, CPU utilization, memory consumption, network traffic, and storage usage in real time.

In this guide, we will build a complete Docker Container Monitoring Dashboard using Prometheus and Grafana step by step.

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

Learn how to build a Docker Container Monitoring Dashboard using Prometheus, Grafana, and cAdvisor. Monitor Docker container CPU, memory, network, and storage metrics in real time.

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.

Conclusion:

Setting up a Docker Container Monitoring Dashboard using Prometheus, Grafana, and cAdvisor provides a powerful solution for monitoring containerized applications in real time. cAdvisor collects detailed container metrics, Prometheus stores and processes the monitoring data, and Grafana transforms the data into interactive and visually appealing dashboards.

By following this step-by-step guide, you can track CPU usage, memory consumption, network activity, and storage utilization of your Docker containers from a centralized dashboard. This monitoring setup helps DevOps engineers and system administrators quickly identify performance bottlenecks, troubleshoot issues, and ensure the stability of containerized environments.

As your infrastructure grows, you can further enhance this monitoring stack by configuring alerts, integrating Alertmanager, monitoring multiple Docker hosts, and collecting application-specific metrics. Implementing a Docker Container Monitoring Dashboard is an essential step toward building a reliable, scalable, and production-ready monitoring solution.

Mahesh Wabale
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