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Backing up Docker named volumes

Posted Updated
By chunaki7 1 min read

Stopping the Docker Service/Containers

To stop the Docker service on Ubuntu 22.04:
systemctl stop docker

To stop containers:
docker stop <container name>

To stop all containers:
docker stop $(docker ps -a -q)

Source Machine

  1. sudo su to gain root access.
  2. cd /var/lib/docker
  3. rsync -av --rsync-path="sudo rsync" volumes/ chunaki@192.168.0.22:/home/chunaki/volumes/

Before you can use --rsync-path="sudo rsync", you need to set the permissions on the destination machine. 1

  1. Find out the path to rsync: which rsync
  2. Edit the /etc/sudoers file: sudo visudo
  3. Add the line <username> ALL=NOPASSWD:<path to rsync>, where username is the login name of the user that rsync will use to log on. That user must be able to use sudo

Target Machine

  1. sudo su
  2. cd /var/lib/docker
  3. cp -r /home/chunaki7/volumes/* volumes/

References

  1. Rsync with Root Permissions ↩

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