Ceph leverages prometheus for monitoring of all of the nodes and services. We feed data from the prometheus collectors into our Grafana instance which supports both display and alerts. Below are screenshots of the data availablle.
Below is the main screen for alerts and slow OSDs (Object Storage Daemon) on our production cluster from earlier this year.
This screenshot shows ceph specific reporting details for capacity, IOPs, Throughput and object related data.
This screenshot shows ceph specific reporting around object counts and status of PGs (Placement Groups)
