Ceph storage extension
- Latest Dynatrace
- Extension
- Published Oct 27, 2025
Monitor usage of Ceph storage system at both the client side and the host level.
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Overview
Monitor usage of the Ceph storage system at both the client side and the host level.
Use Ceph storage extension to:
- Monitor usage and performance of your Ceph platform.
- Always have live information about host resources and data flow.
- Shorten analysis time required to find out the root cause of possible system failures to the minimum.
Use cases
- Monitor host resources usage and its capacity levels.
- Collect data regarding active and inactive Ceph object storage daemons.
- Observe system data flow in terms of write and read operations, both for the cluster as a whole and for the particular OSD's.
Requirements
- Ceph sotrage running in your environment.
- Activated the extension in your environment using in-product Hub.
Details
Licensing and cost
The Ceph storage ingests custom metrics which, depending on your licensing model, can either consume DDUs or metrics on your Dynatrace Platform Subscription.
Below you can see the formula for estimating license consumption for this extension:
- DDUs for all metrics enabled:
((3 * # of monitors)+ (7 * # of clusters)+ (13 * # of OSDs)+ (9 * # of placement groups))* 60 min * 24 hrs * 365 days * 0.001
- Data points for all metrics enabled:
((3 * # of monitors)+ (7 * # of clusters)+ (13 * # of OSDs)+ (9 * # of placement groups))* 60 min * 24 hrs * 365 days
Feature sets
When activating your extension using monitoring configuration, you can limit monitoring to one of the feature sets. To work properly the extension has to collect at least one metric after the activation.
In highly segmented networks, feature sets can reflect the segments of your environment. Then, when you create a monitoring configuration, you can select a feature set and a corresponding ActiveGate group that can connect to this particular segment.
All metrics that aren't categorized into any feature set are considered to be the default and are always reported.
A metric inherits the feature set of a subgroup, which in turn inherits the feature set of a group. Also, the feature set defined on the metric level overrides the feature set defined on the subgroup level, which in turn overrides the feature set defined on the group level.
| Metric name | Metric key | Description |
|---|---|---|
| OSD Apply Latency | ceph_osd_apply_latency_ms | Latency of the "commit" operation on the OSD |
| OSD Commit Latency | ceph_osd_commit_latency_ms | Latency of the "commit" operation on the OSD |
| Total OSD Write Latency | ceph_osd_op_w_latency_sum | Total latency of the "write" operations on the OSD |
| Total OSD Read Latency | ceph_osd_op_r_latency_sum | Total latency of the "read" operations on the OSD |
| Metric name | Metric key | Description |
|---|---|---|
| Total Capacity | ceph_cluster_total_bytes | Total cluster capacity in bytes |
| Used Capacity | ceph_cluster_total_used_bytes | Used cluster capacity in bytes |
| Monitor Metadata | ceph_mon_metadata | Placeholder metric to get monitor metadata dimensions from exporter |
| OSD Metadata | ceph_osd_metadata | Placeholder metric to get OSD metadata dimensions from exporter |
| Metric name | Metric key | Description |
|---|---|---|
| OSDs IN | ceph_osd_in | Storage daemons in the cluster |
| OSDs UP | ceph_osd_up | Storage daemons running |
| Placement groups | ceph_osd_numpg | Placement groups |
| Metric name | Metric key | Description |
|---|---|---|
| PG Active | ceph_pg_active | Placement group active per pool |
| PG Down | ceph_pg_down | Placement group down per pool |
| PG Clean | ceph_pg_clean | Placement group clean per pool |
| PG Backfill Too Full | ceph_pg_backfill_toofull | Placement group backfill_toofull per pool |
| PG Degraded | ceph_pg_degraded | Placement group degraded per pool |
| PG Failed Repair | ceph_pg_failed_repair | Placement group failed repair per pool |
| PG Incomplete | ceph_pg_incomplete | Placement group incomplete per pool |
| PG Stale | ceph_pg_stale | Placement group stale per pool |
| PG Inconsistent | ceph_pg_inconsistent | Placement group inconsistent per pool |
| Metric name | Metric key | Description |
|---|---|---|
| Open Sessions | ceph_mon_num_sessions | Number of open monitor sessions |
| Quorum | ceph_mon_quorum_status | Monitor daemons in quorum |
| Metric name | Metric key | Description |
|---|---|---|
| Objects Count | ceph_pool_objects | Number of objects in pool |
| Objects Recovered | ceph_pool_num_objects_recovered | Number of recovered objects in pool |
| Bytes Recovered | ceph_pool_num_bytes_recovered | Number of recovered bytes in pool |
| Pool Objects Quota | ceph_pool_quota_objects | Object quota set for pool |
| Pool Bytes Quota | ceph_pool_quota_bytes | Byte quota set for pool |
| Metric name | Metric key | Description |
|---|---|---|
| Bytes Written | ceph_osd_op_w_in_bytes | Total sum of bytes written to OSD |
| Bytes Read | ceph_osd_op_r_out_bytes | Total sum of bytes read from OSD |
| Write Operations | ceph_osd_op_w | Total sum of write operations performed on OSD |
| Read Operations | ceph_osd_op_r | Total sum of read operation performed on OSD |
| Recovery Operations | ceph_osd_recovery_ops | Number of recovery operations in OSD |
