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.

Verify Ceph cluster state

Warning

This procedure is valid for MOSK clusters that use the deprecated KaaSCephCluster custom resource (CR) instead of the MiraCeph CR that is available since MOSK 25.2 as a new Ceph configuration entrypoint. For the equivalent procedure with the MiraCeph CR, refer to the following section:

Verify Ceph cluster state

To verify the state of a Ceph cluster, Ceph Controller provides special sections in KaaSCephCluster.status. The resource contains information about the state of the Ceph cluster components, their health, and potentially problematic components.

To verify the Ceph cluster state from a MOSK cluster:

  1. Obtain kubeconfig of a MOSK cluster and provide it as an environment variable:

    export KUBECONFIG=<pathToMOSKKubeconfig>

  2. Obtain the MiraCeph resource in YAML format:

    kubectl -n ceph-lcm-mirantis get miraceph -o yaml

    Information from MiraCeph.status is passed to the miraCephInfo section of the KaaSCephCluster CR. For details, see KaaSCephCluster.status miraCephInfo specification.

  3. Obtain the MiraCephHealth resource in YAML format:

    kubectl -n ceph-lcm-mirantis get miracephhealth -o yaml

    Information from MiraCephHealth is passed to the fullClusterInfo and shortClusterInfo sections of the KaaSCephCluster CR. For details, see KaaSCephCluster.status shortClusterInfo specification and KaaSCephCluster.status fullClusterInfo specification.

    Note

    Before MOSK 25.1, use MiraCephLog instead of MiraCephHealth as the resource name and in the command above.

To verify the Ceph cluster state from a management cluster:

  1. Obtain the KaaSCephCluster resource in the YAML format:

    kubectl -n <projectName> get kaascephcluster -o yaml

    Substitute <projectName> with the project name of the MOSK cluster.

  2. Verify the state of the required component using KaaSCephCluster.status description.