After reading the docs I found myself somewhat confused as to how best to manage productive application/service data.
There seem to be 3 options:
- Simply map volume to host directory (i.e.
-v
argument fordocker run
) - Create a docker container image for data (i.e. separate container and
--volumes-from
) - Creating a docker volume (i.e.
docker volume create
)
Now, it seems that the accepted practice is option #2, but then I wonder what is the purpose of #3.
Especially how do you correctly handle these scenarios with docker volume
and is it better to use a data volume container or this for each situation?
- You need application data in a separate volume and/or storage tier in your server
- Backing up
- Restoring data