2.21.0

The Mirantis Container Cloud GA release 2.21.0:

• Introduces support for the Cluster release 11.5.0 that is based on Mirantis Container Runtime 20.10.13 and Mirantis Kubernetes Engine 3.5.5 with Kubernetes 1.21.

• Introduces support for the Cluster release 7.11.0 that is based on Mirantis Container Runtime 20.10.13 and Mirantis Kubernetes Engine 3.4.11 with Kubernetes 1.20.

• Supports the Cluster release 8.10.0 that is based on the Cluster release 7.10.0 and represents Mirantis OpenStack for Kubernetes (MOSK) 22.4.

• Does not support greenfield deployments on deprecated Cluster releases 11.4.0, 8.8.0, and 7.10.0. Use the latest available Cluster releases of the series instead.

  Caution

  Make sure to update the Cluster release version of your managed cluster before the current Cluster release version becomes unsupported by a new Container Cloud release version. Otherwise, Container Cloud stops auto-upgrade and eventually Container Cloud itself becomes unsupported.

This section outlines release notes for the Container Cloud release 2.21.0.

Caution

Container Cloud 2.21.0 requires manual post-upgrade steps. For details, see Post-upgrade actions.

• Enhancements
  • ‘BareMetalHostCredential’ custom resource for bare metal hosts
  • Dnsmasq configuration enhancements
  • Combining router and seed node settings on one Equinix Metal server
  • Graceful machine deletion
  • Add custom Docker registries using the Container Cloud web UI
  • Documentation enhancements
• Addressed issues
• Known issues
  • MKE
    • [20651] A cluster deployment or update fails with not ready compose deployments
  • Bare metal
    • [26659] Regional cluster deployment failure with stuck ‘mcc-cache’ Pods
    • [24005] Deletion of a node with ironic Pod is stuck in the Terminating state
    • [20736] Region deletion failure after regional deployment failure
  • Equinix Metal with private networking
    • [26659] Regional cluster deployment failure with stuck ‘mcc-cache’ Pods
  • vSphere
    • [26070] RHEL system cannot be registered in Red Hat portal over MITM proxy
  • LCM
    • [5782] Manager machine fails to be deployed during node replacement
    • [5568] The calico-kube-controllers Pod fails to clean up resources
    • [27797] A cluster ‘kubeconfig’ stops working during MKE minor version update
    • [27192] Failure to accept new connections by ‘portforward-controller’
  • StackLight
    • [29329] Recreation of the Patroni container replica is stuck
    • [28526] CPU throttling for ‘kaas-exporter’ blocking metric collection
    • [28479] Increase of the ‘metric-collector’ Pod restarts due to OOM
    • [28134] Failure to update a cluster with nodes in the ‘Prepare’ state
    • [27732-1] OpenSearch PVC size custom settings are dismissed during deployment
    • [27732-2] Custom settings for ‘elasticsearch.logstashRetentionTime’ are dismissed
    • [20876] StackLight pods get stuck with the ‘NodeAffinity failed’ error
  • Storage
    • [28783] Ceph conditon stuck in absence of Ceph cluster secrets info
    • [26441] Cluster update fails with the MountDevice failed for volume warning
• Components versions
• Artifacts
• Post-upgrade actions

See also

• Cluster releases (managed)

• Releases summary

• Deprecation notes