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 MCC). This means everything you need is in one place. The separate MCC documentation site will be retired, so please update your bookmarks for continued easy access to the latest content.

2.27.0

The Mirantis Container Cloud major release 2.27.0:

• Introduces support for the Cluster release 17.2.0 that is based on the Cluster release 16.2.0 and represents Mirantis OpenStack for Kubernetes (MOSK) 24.2.

• Introduces support for the Cluster release 16.2.0 that is based on Mirantis Container Runtime (MCR) 23.0.11 and Mirantis Kubernetes Engine (MKE) 3.7.8 with Kubernetes 1.27.

• Does not support greenfield deployments on deprecated Cluster releases of the 17.1.x and 16.1.x series. 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 2.27.0.

• Enhancements
  • General availability for Ubuntu 22.04 on bare metal clusters
  • Improvements in the day-2 management API for bare metal clusters
  • Optimization of strict filtering for devices on bare metal clusters
  • Deprecation of SubnetPool and MetalLBConfigTemplate objects
  • The ClusterUpdatePlan object for a granular cluster update
  • Update groups for worker machines
  • LCM Agent heartbeats
  • Handling secret leftovers using secret-controller
  • MariaDB backup for bare metal and vSphere providers
• Addressed issues
• Known issues
  • Bare metal
    • [47202] Inspection error on bare metal hosts after dnsmasq restart
    • [46245] Lack of access permissions for HOC and HOCM objects
    • [42386] A load balancer service does not obtain the external IP address
    • [41305] DHCP responses are lost between dnsmasq and dhcp-relay pods
    • [24005] Deletion of a node with ironic Pod is stuck in the Terminating state
  • LCM
    • [39437] Failure to replace a master node on a Container Cloud cluster
    • [31186,34132] Pods get stuck during MariaDB operations
    • [30294] Replacement of a master node is stuck on the calico-node Pod start
    • [5782] Manager machine fails to be deployed during node replacement
    • [5568] The calico-kube-controllers Pod fails to clean up resources
  • Ceph
    • [50566] Ceph upgrade is very slow during patch or major cluster update
    • [42908] The ceph-exporter pods are present in the Ceph crash list
    • [26441] Cluster update fails with the MountDevice failed for volume warning
  • StackLight
    • [44193] OpenSearch reaches 85% disk usage watermark affecting the cluster state
    • [43164] Rollover policy is not added to indicies created without a policy
  • Container Cloud web UI
    • [50181] Failure to deploy a compact cluster
    • [50168] Inability to use a new project right after creation
• Components versions
• Artifacts
  • Bare metal artifacts
  • Core artifacts
  • IAM artifacts
• Security notes
• Update notes
  • Updated scheme for patch Cluster releases
  • Pre-update actions
    • Update bird configuration on BGP-enabled bare metal clusters
    • Review and adjust the storage parameters for OpenSearch
  • Post-update actions
    • Prepare for changing label values in Ceph metrics used in customizations

See also

• Cluster releases (managed)

• Releases summary

• Deprecation Notes

• Patch releases