Note: Take this post and pinch of salt, this is for personal reference and copy pasted commands. Will improve and update this post later.

Docker volume:

Two types

1. Bind directory on host system
   • docker run -it —name test2 -v ~/somepath/data:/data ubuntu bash
   • docker run -it —name test2(name_of_container) -v ~/somepath/data(host_dir):/data(container_dir) ubuntu(image_name) bash(start bash)
2. Docker Volumes

Advantages of docker volume

• Volumes are easier to back up or migrate than bind mounts.
• You can manage volumes using Docker CLI commands or the Docker API.
• Volumes work on both Linux and Windows containers.
• Volumes can be more safely shared among multiple containers.
• Volume drivers allow you to store volumes on remote hosts or cloud providers, to encrypt the contents of volumes, or to add other functionality.

• A new volume’s contents can be pre-populated by a container.

• Create data volume docker volume create my-vol
• This is crate volume if not exist and run container: docker run -it —name test2 -v data:/data ubuntu bash
  • docker run -it —name test2 -v data(docker volume name):/data(container-dir) ubuntu bash
• Docker volume commands:
  • docker volume ls
  • docker volume —help
  • docker volume rm data
• Mount all the volumes in new container mount in old container
  • docker run -it —name slave1 —volume-from master ubuntu bash
  • docker run -it —name slave1(new_container_name) —volume-from master(old_container_name) ubuntu bash

Reference:

• https://docs.docker.com/storage/volumes/