Automatic (and optional) backup for service/databases data

[pdonorio]

We should provide for each service the command to backup and restore data, either it's the entire data dir or a specific tool provided by the service itself.

We should discuss here how to make this possible.

[pdonorio]

For instance we can write a celery worker for each service backup command. The worker should be a container started with the right "volumes-from" option set.
Then the docker-compose command (or via do.py?) could be called inside the host cron, writing a few lines of documentation or providing examples (e.g. once a day).

The do.py is the most powerful option, which could also cycle on a list of workers that can make the backup (e.g. files inside a vanilla/backup_scripts) to execute them all.

One requirement for this drafted solution is that redis/celery should be running, and do.py can check that.

[pdonorio]

We may keep also trace here of a list of instructions for backups to be implemented with workers:

• elasticsearch
• neo4j?