Enhancements

This section outlines new features implemented in the Cluster release 16.3.0 that is introduced in the Container Cloud release 2.28.0.

Support for MKE 3.7.12 and MCR 23.0.14

Introduced support for Mirantis Container Runtime (MCR) 23.0.14 and Mirantis Kubernetes Engine (MKE) 3.7.12 that includes Kubernetes 1.27.14 for the Container Cloud management and managed clusters.

On existing managed clusters, MKE and MCR are updated to the latest supported version when you update your managed cluster to the Cluster release 16.3.0.

Note

The 3.7.12 update applies to users who follow the update train using major releases. Users who install patch releases, have already obtained MKE 3.7.12 in Container Cloud 2.27.3 (Cluster release 16.1.4).

Improvements in the CIS Benchmark compliance for Ubuntu Linux

Analyzed and reached 80% of pass rate in the CIS Benchmark compliance checks (executed by the Nessus scanner) for Ubuntu Linux 22.04 LTS v2.0.0 L1 Server, revision 1.1.

Note

Compliance results can vary between clusters due to configuration-dependent tests, such as server disk partitioning.

If you require a detailed report of analyzed and fixed compliance checks, contact Mirantis support.

Monitoring of LCM issues

Implemented proactive monitoring that allows the operator to quickly detect and resolve LCM health issues in a cluster. The implementation includes the dedicated MCCClusterLCMUnhealthy alert along with the kaas_cluster_lcm_healthy and kaas_cluster_ready metrics that are collected on the kaas-exporter side.

Refactoring of StackLight expiration alerts

Refactored all certificate and license expiration alerts in StackLight that now display the exact number of remaining days before expiration using {{ $value | humanizeTimestamp }}. This optimization replaces vague wording such as less than 10 days, which indicated a range from 0 to 9 days before expiration.