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.

2.29.4

The Container Cloud patch release 2.29.4, which is based on the 2.29.0 major release, provides the following updates:

• Support for the patch Cluster releases 16.3.9 and 16.4.4

• Support for the patch Cluster release 17.3.9 that represents MOSK patch release 24.3.6 patch

• Support for Mirantis Kubernetes Engine to 3.7.23

• Support for docker-ee-cli 23.0.18 on MOSK clusters (MCR 23.0.15) and 25.0.10 on management clusters (MCR 25.0.8)

• Bare metal: update of Ubuntu mirror from ubuntu-2025-03-31-003900 to ubuntu-2025-05-26-003900 along with update of minor kernel version from 5.15.0-135-generic to 5.15.0-140-generic

• Mandatory migration of container runtime from Docker to containerd

• Security fixes for CVEs in images

This patch release also supports the latest major Cluster releases 17.4.0 and 16.4.0. And it does not support greenfield deployments based on deprecated Cluster releases. Use the latest available Cluster releases instead.

For main deliverables of the parent Container Cloud release of 2.29.0, refer to 2.29.0.

For the list of MOSK addressed issues, if any, see Release notes 24.3.6.

• Update notes
  • Pre-update actions
    • Ensure that local-volume-provisioner is healthy
  • Post-update actions
    • Mandatory migration of container runtime from Docker to containerd
• Security notes
• Known issues
  • Bare metal
    • [42386] A load balancer service does not obtain the external IP address
    • [24005] Deletion of a node with ironic Pod is stuck in the Terminating state
  • Ceph
    • [50637] Ceph creates second miracephnodedisable object during node disabling
    • [26441] Cluster update fails with the MountDevice failed for volume warning
  • LCM
    • [50561] The local-volume-provisioner pod switches to CrashLoopBackOff
    • [31186,34132] Pods get stuck during MariaDB operations
  • StackLight
    • [43474] Custom Grafana dashboards are corrupted
  • Container Cloud web UI
    • [50181] Failure to deploy a compact cluster
    • [50168] Inability to use a new project right after creation
• Artifacts
  • Bare metal artifacts
  • Core artifacts
  • IAM artifacts