Docker Monitoring Stack

Monitor your Linux containers with Prometheus, Grafana, Node Exporter, and cAdvisor

Get Started View on GitHub

Monitoring Services

Grafana

Visualization platform with customizable dashboards for your metrics.

localhost:3000

Prometheus

Time-series database for collecting and querying metrics.

localhost:9090

cAdvisor

Container resource usage and performance characteristics.

localhost:8080

Node Exporter

Exports hardware and OS metrics from 10 Linux containers.

Ports 9101-9110

Setup Instructions

Quick Start

# Clone the repository

git clone https://github.com/sameeralam3127/monitoring.git

cd monitoring

# Build and start the stack

docker-compose up -d --build

Requirements

  • Docker installed
  • Docker Compose installed
  • At least 4GB RAM available

Configuration

  • Prometheus config: prometheus/prometheus.yml
  • Grafana dashboards: grafana/dashboard.json

Example Prometheus Queries

CPU Metrics

# CPU usage per container

rate(node_cpu_seconds_total{mode="user"}[5m])

# Docker container CPU usage

rate(container_cpu_usage_seconds_total{name=~".+"}[5m])

Memory Metrics

# Memory usage percentage

node_memory_Active_bytes / node_memory_MemTotal_bytes * 100

System Metrics

# Running services (systemd)

node_systemd_unit_state{state="active"}

# Logged-in users

node_users_logged_in

Error Metrics

# Failed services

node_systemd_unit_state{state="failed"}