Docker Volumes

Description

Docker volumes are file systems that are stored on the host and mounted in the Docker containers. They are used to preserve data independent of the container life cycle.^[1]

Videos

Types of Volumes

Host Volumes

-v /path/on/host:/path/in/container

Anonymous Volumes

-v /path/in/container

Named Volumes

-v volume_name:/path/in/container

docker compose

Named Volume Examples

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version: '3'
services:
  mongodb:
    image: mongo
    ports:
      - 27017:27017
    volumes:
      - db-data:/var/lib/mysql/data
  service_two:
    image: coolio
    ports:
      - 8080:8080
    volumes:
      - db-data:/var/lib/data
  volumes:
    db-data:
      driver: local

docker volume command

docker volume inspect [volume_name]