Docker Volumes Management

Con­tain­ers

De­vOps and SRE

Ba­sic com­mands

docker volume

Usage:  docker volume COMMAND

Manage volumes

Commands:
  create      Create a volume
  inspect     Display detailed information on one or more volumes
  ls          List volumes
  prune       Remove all unused local volumes
  rm          Remove one or more volumes

Run 'docker volume COMMAND --help' for more information on a command.

docker volume create volume_name

docker volume ls

docker volume inspect volume_name

sudo ls -la /var/lib/docker/volumes/

docker volume (rm|prune) volume_name

Ex­pla­na­tions

Note when you are us­ing dock­er com­pose, un­less spec­i­fy path in the left side on the ser­vices: con­tain­er-name: vol­umes: sec­tion dock­er will au­to­mat­i­cal­ly cre­ate a vol­ume /​​​var/​​​lib/​​​do­ck­er/​​​vo­lu­mes/​​​ named af­ter the con­tain­er-name un­der­score _ and the name of the vol­ume.

Ex­am­ples

example 1

docker-compose.yml

version: "3"
services:
  container-name:
    image: image_name
    volumes:
    - ./base:/data

The directory used as a volume is "./base" within the current directory where the "docker-compose.yml" is located.

example 2

docker-compose.yml

version: "3"
services:
  container-name:
    image: image_name
    volumes:
    - base:/data
volumes:
  base:

The directory used as a volume is "/var/lib/docker/volumes/container-name_base/_data" and it will be automatically created unles some additional options are specified within the "volumes:" section.

Ref­er­ences

• Dock­er: Man­u­als > Dock­er En­gine > Stor­age > Vol­umes

• Dock­er: Ref­er­ence > Com­pose file ref­er­ence > Com­pose spec­i­fi­ca­tion > Vol­umes top-lev­el el­e­ment

Reg­is­ter: Con­tain­ers

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24.05.2023

24.05.2023

24.05.2023

24.05.2023

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