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#Volume of local cloud galaxy archive
#Volume of local cloud galaxy plus

back up the MySQL dataĪn other way is to remotely connect to the MySQL server to produce a database dump with the mysqldump command. To do so you will have to stop the wordpress container.

#Volume of local cloud galaxy archive

So if you want to export a tar archive for this volume, you will need to stop the MySQL server first. In your particular case, the data volume is used to store the data for a MySQL server. To back up a data volume you can run a new container using the volume you want to back up and executing the tar command to produce an archive of the volume content as described in the docker user guide. You can later on create a new docker image from that tar archive with the docker import command.īe aware that those commands will only back up the docker container layered file system.

by exporting the docker container file system as a tar archive using the docker export command.

by committing a new docker image based on the docker container current state using the docker commit command.

You can back up a docker container by different means To back up docker images, use the docker save command that will produce a tar archive that can be used later on to create a new docker image with the docker load command.

#Volume of local cloud galaxy plus

There must be some simple way to back up my container plus volume data but I can't find it anywhere. Such containers are called data volume containers. This way you can delete the docker container running the wordpress app without losing the ease of access to that data volume content. In order to prevent those dangling volumes, the trick is to create an additional docker container using the data volume you want to persist so that there will always be at least that docker container referencing the volume. This means that as soon as the last container using a volume is deleted, the data volume becomes dangling and its content difficult to access. Those dangling volumes are difficult to get rid of and difficult to access. While Docker will never delete data in volumes (unless you delete the associated container with docker rm -v), volumes that are not referenced by any docker container are called dangling volumes. This also eases the sharing of data between multiple containers. But if I do that the volume gets deleted and all my data is goneĪs the docker user guide explains, data volumes are meant to persist data outside of a container filesystem. If I want to revert the container I can try to commit an image, and then later delete the container, and create a new container from the committed image.