MOSK cluster components compatibility

The table below provides the insight into the versions of the components running on a MOSK cluster.

MOSK 26.2 series

MOSK cluster	26.2 (21.2.0)
Release date	2026-09-21
Mirantis Kubernetes Engine	3.7.32-mosk [3]
Kubernetes	1.30
Mirantis Container Runtime	25.0.17m1
Ubuntu	24.04
Linux Kernel [0]	6.8.0-138-generic
Mirantis StackLight [1]	0.20.5
OpenStack [2]	Gazpacho, Epoxy
OpenSDN	25.1 [4], 24.1
Ceph	Tentacle 20.2.3-1.release

[0]

The kernel version of the host operating system validated by Mirantis and confirmed to be working for the supported use cases. Usage of custom kernel versions or third-party vendor-provided kernels, such as FIPS-enabled, assume full responsibility for validating the compatibility of components in such environments.

[1]

The StackLight version is represented by the tag of the stacklight Helm chart, which includes information about all StackLight components.

[2]

The LTS duration of an OpenStack version is two years. For support timeline for OpenStack, refer to OpenStack support cycle.

[3]

This MKE release is available exclusively for MOSK. For further details, contact Mirantis support.

[4]

OpenSDN 25.1 is supported only for MOSK clusters running OpenStack Gazpacho. To upgrade from OpenSDN 24.1, refer to Upgrade OpenSDN from 24.1 to 25.1.