Let say you have a Data Volume Container named mysql-data to keep /var/lib/mysql. You start up your mysql server container by running:
$ docker run --volumes-from=mysql-data --name mysql-server ...
This tool allows you to backup and restore the Data Volume Container mysql-data easily.
There are two ways to backup a Data Volume Container:
-
Via a Data Volume Container Id or Name directly
$ docker-backup store mysql-data-backup.tar mysql-data -
Via a Container Id or Name In this case the tool will try to find the Data Volume Container for the given container.
$ docker-backup store mysql-data-backup.tar mysql-server
Contents of the backup tarball:
- the Data Volume Container's json
- all volumes found in the Data Volume Container
After that, this tool can be used to restore a Data Volume Container from that tarball either on the same or on another host.
$ docker-backup restore mysql-data-backup.tar
For general documentation on how to use Data Volume Containers, see: http://docs.docker.io/en/latest/use/working_with_volumes/#creating-and-mounting-a-data-volume-container
For a more complete backup strategy built on top of docker-backup, look at https://github.com/discordianfish/docker-lloyd