Ceph Status Details, OSDs and Placement Groups
The Ceph Status and Objects / PGs tabs expose detailed health information that is useful for operations and troubleshooting.
Key Health Fields
| Field | Meaning |
|---|---|
| Health Status | Overall Ceph health state. Healthy means no critical health issue is currently reported. |
| Total MONs | Number of monitor daemons known to the cluster. |
| Active MGR | The manager daemon currently active. |
| Active MDS | The active metadata server, if CephFS/MDS services are used. |
| PG States | Placement group state summary. |
In the test cluster, Ceph reported a healthy state, Total MONs was 5, the active manager was EEKASBG-1.ynuwsd and PG states showed active+clean: 180.
Objects and Placement Groups
The Objects / PGs tab highlights object-level risk indicators.
| Field | Healthy Meaning |
|---|---|
| Degraded Objects | 0 means no objects currently lack the expected redundancy. |
| Misplaced Objects | 0 means data placement currently matches the intended CRUSH placement. |
| Unfound Objects | 0 means no objects are missing from all known OSDs. |
| PG States | active+clean means placement groups are active and clean. |
Recommended Troubleshooting Flow
- Start with the Cluster Status tab.
- Open Ceph Status and check Health Status, Total MONs, Active MGR and PG States.
- Open Objects / PGs and check degraded, misplaced and unfound objects.
- Record exact values before taking corrective action.
- Avoid large configuration changes while degraded, misplaced or unfound objects are present unless the change is part of the recovery plan.
Good Practice
A healthy state should show zero degraded, misplaced and unfound objects. Any non-zero value should be investigated before handing the service to users or customers.