.. _docker_backups:

==================
Performing backups
==================

To backup the existing data, stop the image and copy the content of the volume.
For the example::

    docker run -d --name mayan-edms --restart=always -p 80:8000 \
    -v /docker-volumes/mayan:/var/lib/mayan \
    -v /opt/scanned_files:/scanned_files mayanedms/mayanedms:latest

That would be the ``/docker-volumes/mayan folder``::

    sudo tar -zcvf backup.tar.gz /docker-volumes/mayan
    sudo chown `whoami` backup.tar.gz

If using an external PostgreSQL or MySQL database or database containers, these
too need to be backed up using their respective procedures. A simple solution
is to copy the entire database container volume after the container has
been stopped.


=======================
Restoring from a backup
=======================

Uncompress the backup archive in the original docker volume using::

    sudo tar -xvzf backup.tar.gz -C /