One key part of implementing Ceph management capabilities within openATTIC revolves around the possibilities to install, deploy and manage Ceph cluster nodes in an automatic fashion. This requires remote node management capabilities, that openATTIC currently does not provide out of the box. For "traditional" storage configurations, openATTIC needs to be installed on any storage node that is managed, but you can use a single web interface for managing all of the node's storage resources.
Naturally, installing openATTIC on all nodes belonging to a Ceph cluster is not feasible.
The DeepSea Documentation on github is a good start, but sometimes it's helpful to get a simple step-by-step guide on how to get started.
Hope you enjoy it!