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.

Enhancements

This section outlines new features implemented in the Cluster release 11.7.0 that is introduced in the Container Cloud release 2.23.0.

MKE patch release update

Updated the Mirantis Kubernetes Engine (MKE) version from 3.5.5 to 3.5.7 for the Container Cloud management, regional, and managed clusters on all supported cloud providers, as well as for non Container Cloud based MKE cluster attachment.

Note

For MOSK-based deployments, the feature support is available since MOSK 23.1.

Learn more

MKE documentation: MKE release notes

Automatic upgrade of Ceph from Octopus to Pacific

Upgraded Ceph major version from Octopus 15.2.17 to Pacific 16.2.11 with an automatic upgrade of Ceph components on existing managed clusters during the Cluster version update.

Caution

Since Ceph Pacific, while mounting an RBD or CephFS volume, CSI drivers do not propagate the 777 permission on the mount path.

Note

For MOSK-based deployments, the feature support is available since MOSK 23.1.

Learn more

Operations Guide: Ceph operations for KaaSCephCluster (prior to 25.2)

HA setup for ‘iam-proxy’ in StackLight

Implemented deployment of two iam-proxy instances for the StackLight HA setup that ensures access to HA components if one iam-proxy instance fails. The second iam-proxy instance is automatically deployed during cluster update on existing StackLight HA deployments.

Note

For MOSK-based deployments, the feature support is available since MOSK 23.1.

Learn more

Reference Architecture: StackLight deployment architecture

Log forwarding to third-party systems using Fluentd plugins

Added the capability to forward logs to external Elasticsearch and OpenSearch servers as the fluentd-logs output. This enhancement also expands existing configuration options for log forwarding to syslog.

Introduced logging.externalOutputs that deprecates logging.syslog and enables you to configure any number of outputs with more configuration flexibility.

Note

For MOSK-based deployments, the feature support is available since MOSK 23.1.

Learn more

Operations Guide: Configure StackLight

‘MCC Applications Performance’ Grafana dashboard for StackLight

Implemented the MCC Applications Performance Grafana dashboard that provides information on the Container Cloud internals work based on Golang, controller runtime, and some custom metrics. You can use it to verify performance of applications and for troubleshooting purposes.

Note

For MOSK-based deployments, the feature support is available since MOSK 23.1.

Learn more

Operations Guide: View Grafana dashboards

PVC configuration for Reference Application

Implemented the following options that enable configuration of persistent volumes for Reference Application :

  • refapp.workload.persistentVolumeEnabled

  • refapp.workload.persistentVolumeSize

Note

The refapp.workload.persistentVolumeEnabled option is enabled by default and is recommended for production clusters.

Caution

For MKE clusters that are part of MOSK infrastructure, the feature is not supported yet.