Mirantis Container Cloud (MCC) becomes part of Mirantis OpenStack for Kubernetes (MOSK)!

Starting with MOSK 25.2, the MOSK documentation set covers all product layers, including MOSK management (formerly Container Cloud). This means everything you need is in one place. Some legacy names may remain in the code and documentation and will be updated in future releases. The separate Container Cloud documentation site will be retired, so please update your bookmarks for continued easy access to the latest content.

Ceph¶

This section provides information about deprecated and removed functionality in Mirantis Ceph.

KaaSCephCluster API on management clusters¶

Deprecated	MOSK 25.2
Unsupported	MOSK 26.1
Details	Deprecated the `KaaSCephCluster` resource on management clusters and replaced it by the following resources on MOSK clusters: `MiraCeph`, `MiraCephHealth`, `MiraCephSecret`, and `MiraCephMaintenance`. Also, the `KaaSCephOperationRequest` resource of the management cluster is replaced by `CephOsdRemoveRequest` of MOSK clusters. In MOSK 25.2, migration of custom resources from management to MOSK clusters is optional and recommended to prepare for future migration, but irreversible. For migration details, see Migrate KaaSCephCluster from a management to MOSK cluster. Since MOSK 26.1, this migration will occur automatically. On existing clusters, after Ceph resources migration, any interaction with the Ceph cluster will be processed inside `MiraCeph`, `MiraCephHealth`, and `MiraCephSecret` resources. For comparison between a management cluster Ceph resource and a MOSK cluster Ceph resources, see Comparison of KaaSCephCluster and MiraCeph-related specifications.

Deprecated

MOSK 25.2

Unsupported

MOSK 26.1

Details

Deprecated the KaaSCephCluster resource on management clusters and replaced it by the following resources on MOSK clusters: MiraCeph, MiraCephHealth, MiraCephSecret, and MiraCephMaintenance.

Also, the KaaSCephOperationRequest resource of the management cluster is replaced by CephOsdRemoveRequest of MOSK clusters.

In MOSK 25.2, migration of custom resources from management to MOSK clusters is optional and recommended to prepare for future migration, but irreversible. For migration details, see Migrate KaaSCephCluster from a management to MOSK cluster.

Since MOSK 26.1, this migration will occur automatically. On existing clusters, after Ceph resources migration, any interaction with the Ceph cluster will be processed inside MiraCeph, MiraCephHealth, and MiraCephSecret resources. For comparison between a management cluster Ceph resource and a MOSK cluster Ceph resources, see Comparison of KaaSCephCluster and MiraCeph-related specifications.

The ingress section in the Ceph spec¶

Deprecated	MOSK 24.3
Unsupported	MOSK 25.1
Details	Deprecated the `ingress` section of the Ceph `spec`. Use the `ingressConfig` section instead. On existing clusters, the `ingress` section is automatically replaced by `ingressConfig` since MOSK 25.1.

Deprecated

MOSK 24.3

Unsupported

MOSK 25.1

Details

Deprecated the ingress section of the Ceph spec. Use the ingressConfig section instead.

On existing clusters, the ingress section is automatically replaced by ingressConfig since MOSK 25.1.

Ceph metrics¶

Deprecated	MOSK 24.2
Unsupported	MOSK 24.3
Details	Deprecated the performance metric exporter that is integrated into the Ceph Manager daemon for the sake of the dedicated Ceph Exporter daemon. Names of metrics will not be changed, no metrics will be removed. All Ceph metrics to be collected by the Ceph Exporter daemon will change their labels `job` and `instance` due to scraping metrics from new Ceph Exporter daemon instead of the performance metric exporter of Ceph Manager: Values of the `job` labels will be changed from `rook-ceph-mgr` to `prometheus-rook-exporter` for all Ceph metrics moved to Ceph Exporter. The full list of moved metrics is presented below. Values of the `instance` labels will be changed from the metric endpoint of Ceph Manager with port `9283` to the metric endpoint of Ceph Exporter with port `9926` for all Ceph metrics moved to Ceph Exporter. The full list of moved metrics is presented below. Values of the `instance_id` labels of Ceph metrics from the RADOS Gateway (RGW) daemons will be changed from the daemon GID to the daemon subname. For example, instead of `instance_id="<RGW_PROCESS_GID>"`, the `instance_id="a"` (`ceph_rgw_qlen{instance_id="a"}`) will be used. The list of moved Ceph RGW metrics is presented below. Therefore, if Ceph metrics to be collected by the Ceph Exporter daemon are used in any customizations, for example, custom alerts, Grafana dashboards, or queries in custom tools, update your customizations to use new labels since Container Cloud 2.28.0 (Cluster releases 16.3.0 and 17.3.0). List of affected Ceph RGW metrics `ceph_rgw_cache_.` `ceph_rgw_failed_req` `ceph_rgw_gc_retire_object` `ceph_rgw_get.` `ceph_rgw_keystone_.` `ceph_rgw_lc_.` `ceph_rgw_lua_.` `ceph_rgw_pubsub_.` `ceph_rgw_put.` `ceph_rgw_qactive` `ceph_rgw_qlen` `ceph_rgw_req` List of all metrics to be collected by Ceph Exporter instead of Ceph Manager `ceph_bluefs_.` `ceph_bluestore_.` `ceph_mds_cache_.` `ceph_mds_caps` `ceph_mds_ceph_.` `ceph_mds_dir_.` `ceph_mds_exported_inodes` `ceph_mds_forward` `ceph_mds_handle_.` `ceph_mds_imported_inodes` `ceph_mds_inodes.` `ceph_mds_load_cent` `ceph_mds_log_.` `ceph_mds_mem_.` `ceph_mds_openino_dir_fetch` `ceph_mds_process_request_cap_release` `ceph_mds_reply_.` `ceph_mds_request` `ceph_mds_root_.` `ceph_mds_server_.` `ceph_mds_sessions_.` `ceph_mds_slow_reply` `ceph_mds_subtrees` `ceph_mon_election_.` `ceph_mon_num_.` `ceph_mon_session_.` `ceph_objecter_.` `ceph_osd_numpg.` `ceph_osd_op.` `ceph_osd_recovery_.` `ceph_osd_stat_.` `ceph_paxos.` `ceph_prioritycache.` `ceph_purge.` `ceph_rgw_cache_.` `ceph_rgw_failed_req` `ceph_rgw_gc_retire_object` `ceph_rgw_get.` `ceph_rgw_keystone_.` `ceph_rgw_lc_.` `ceph_rgw_lua_.` `ceph_rgw_pubsub_.` `ceph_rgw_put.` `ceph_rgw_qactive` `ceph_rgw_qlen` `ceph_rgw_req` `ceph_rocksdb_.*`

Deprecated

MOSK 24.2

Unsupported

MOSK 24.3

Details

Deprecated the performance metric exporter that is integrated into the Ceph Manager daemon for the sake of the dedicated Ceph Exporter daemon. Names of metrics will not be changed, no metrics will be removed.

All Ceph metrics to be collected by the Ceph Exporter daemon will change their labels job and instance due to scraping metrics from new Ceph Exporter daemon instead of the performance metric exporter of Ceph Manager:

Values of the job labels will be changed from rook-ceph-mgr to prometheus-rook-exporter for all Ceph metrics moved to Ceph Exporter. The full list of moved metrics is presented below.
Values of the instance labels will be changed from the metric endpoint of Ceph Manager with port 9283 to the metric endpoint of Ceph Exporter with port 9926 for all Ceph metrics moved to Ceph Exporter. The full list of moved metrics is presented below.
Values of the instance_id labels of Ceph metrics from the RADOS Gateway (RGW) daemons will be changed from the daemon GID to the daemon subname. For example, instead of instance_id="<RGW_PROCESS_GID>", the instance_id="a" (ceph_rgw_qlen{instance_id="a"}) will be used. The list of moved Ceph RGW metrics is presented below.

Therefore, if Ceph metrics to be collected by the Ceph Exporter daemon are used in any customizations, for example, custom alerts, Grafana dashboards, or queries in custom tools, update your customizations to use new labels since Container Cloud 2.28.0 (Cluster releases 16.3.0 and 17.3.0).

The cephDeviceMapping status fields¶

Deprecated	MOSK 23.1
Unsupported	MOSK 23.2
Details	Removed `cephDeviceMapping` from the `status.fullClusterInfo.cephDetails` section of the `KaaSCephCluster` object because its large size can potentially exceed the Kubernetes 1.5 MB quota.

The mgr.modules parameter¶

Deprecated	MOSK 22.4
Unsupported	To be decided
Details	Deprecated the `mgr.modules` parameter in favor of `mgr.mgrModules`.

Ceph RADOS Gateway users parameter¶

Deprecated	MOSK 22.4
Unsupported	To be decided
Details	Deprecated the Ceph RADOS Gateway `users` parameter in favor of `objectUsers`.

Ceph on management and regional clusters¶

Deprecated	Container Cloud 2.19.0 (Cluster releases 11.3.0 and 7.9.0)
Unsupported	Container Cloud 2.20.0 (Cluster releases 11.4.0 and 7.10.0)
Details	Removed Ceph cluster deployment from the management and regional clusters to reduce resource consumption. Ceph is automatically removed during the Cluster release update to 11.4.0 or 7.10.0.

The dataPool field in CephFS specification¶

Deprecated	MOSK 22.4 and Container Cloud 2.19.0
Unsupported	To be decided
Details	Deprecated the `dataPool` field in CephFS specification in favor of `dataPools`.

The manageOsds parameter in KaaSCephCluster¶

Deprecated	MOSK 22.1 and Container Cloud 2.14.0
Unsupported	MOSK 22.3 and Container Cloud 2.17.0
Details	Deprecated `manageOsds` in the `KaaSCephCluster` CR. To remove Ceph OSDs, see Remove Ceph OSD manually or Automated Ceph LCM.

The maintenance flag¶

Deprecated	MOSK 21.5 and Container Cloud 2.12.0
Unsupported	MOSK 22.1 and Container Cloud 2.14.0
Details	Deprecated the Ceph `maintenance` flag as part of Ceph components refactoring.