In the MCP 2019.2.14 maintenance update, Mirantis introduces the following enhancements for Ceph:
To obtain the enhancements, follow the steps described in Apply maintenance updates.
Implemented granular distribution of Ceph keys. Now Ceph keyring access is distributed only between the required nodes. For existing deployments, you can enable the feature as described in MCP Operations Guide: Enable granular distribution of Ceph keys.