Adding a cluster in OpsCenter 5.0 without problems. As far as I can see, there are no errors in opscenterd.log. However, the web interface doesn't show any nodes. I can see that all XHR calls in the browser look good though.
If I try to click "Cluster Actions" -> "Configure", I get this:
Unable to get definition for cassandra-yaml for cluster settings.
I've tried re-installing OpsCenter (as well as dropping the OpsCenter keyspace), without any difference.