Docker Volume RBD is our implementation of an RBD (Ceph) driver for Docker. The operation is done via Systemd Service or native as a Docker plugin. In order to make upgradability easier, we recommend installing and configuration using our Ansible Playbook or via the Package Manager and including our Repository.
To mount RBD storage images, Ceph must first be configured on the corresponding server. This is not part of this short guide.
The executable “docker-volume-rbd” expects the required configuration via environment variables.
LOG_LEVEL=1 LOG_LEVEL=3 RBD_CONF_POOL="docker" RBD_CONF_CLUSTER=ceph RBD_CONF_KEYRING_USER=client.docker
If e.g. Rexray was used as S3 volume provider before, the buckets each contain a “data” subdirectory in which the actual data is stored. where the actual data is stored. To take this into account, this directory can be specified with the following configuration can be specified:
Furthermore, the following default settings can be changed:
Afterwards, the service can be executed via “docker-volume-rbd”.