Docker Compose

Docker Compose is a tool for defining and running multi-container Docker applications. It leverages YAML configuration files to specify application services, allowing developers to launch all configured services with a single command.

Purpose

This tutorial demonstrates creating and operating both InfluxDB and Grafana containers simultaneously, with Grafana linked to InfluxDB and both configured for automatic startup.

Prerequisites

• Linux OS (Debian demonstrated in this example)
• Docker engine installed

Installation Steps

Install Docker Compose:

sudo curl -L "https://github.com/docker/compose/releases/download/1.25.4/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose

Make executable:

sudo chmod +x /usr/local/bin/docker-compose

Configuration File

Create a file called docker-compose.yml:

influxdb:
  image: influxdb
  container_name: influxdb
  ports:
    - "8086:8086"
    - "8083:8083"
    - "8090:8090"
  restart: unless-stopped
  volumes:
    - /srv/docker/influxdb/data:/var/lib/influxdb

grafana:
  image: grafana/grafana
  container_name: grafana
  ports:
    - "3000:3000"
  restart: unless-stopped
  user: "0"
  links:
    - influxdb
  volumes:
    - /srv/docker/grafana/data:/var/lib/grafana

Execution

Launch services as a daemon:

docker-compose up -d

This command will start both containers in the background. The restart: unless-stopped configuration ensures they will automatically restart after a system reboot.

Further Reading

• Docker Compose Documentation
• InfluxDB Docker Hub
• Grafana Docker Hub