I installed 2.0.14 from scratch on CentOS 7, but did not configure a Ceph cluster.
The Web UI still displays the Ceph-related menu items. When clicking on any of these, a spinner appears and the screen gets dimmed. I observe failure messages being printed in the background, but the spinner keeps on spinning.
Clicking on another menu item gets me out of this state, but this is quite confusing.
Ideally, if no Ceph cluster is configured, the "Ceph" menu entry should not be visible. If this is not easily doable, it should at least capture this situation more gracefully instead of getting stuck in a loop.