Ceph setup
Triple-O has built-in support to deploy a Ceph cluster and use it as the primary backing store for Cinder and for Glance. In Chapter 1, RDO Installation, there was a ceph parameter and a storage environment file that were passed to the overcloud deployment command. They set up Ceph as the backing store for your Triple-O deployment. If you left those two options out of the deployment command, Triple-O would default back to LVM as the backing store for Cinder.
GlusterFS setup
This demonstration shows an example starting with an LVM-configured backing store. If you would like to do this example, you will need to start with a deployment that has LVM configured and not Ceph.
Conveniently enough, a simple GlusterFS installation is not extremely ...
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