This section outlines new features and enhancements introduced in the Mirantis Container Cloud release 2.3.0. For the list of enhancements in the Cluster release 5.10.0 and Cluster release 6.10.0 introduced by the Container Cloud release 2.3.0, see the 5.10.0 and 6.10.0 sections.

Updated versions of Mirantis Kubernetes Engine and Container Runtime

Updated the Mirantis Kubernetes Engine (MKE) version to 3.3.4 and the Mirantis Container Runtime (MCR) version to 19.03.13 for the Container Cloud management and managed clusters.

For the MKE release highlights and components versions, see MKE documentation: MKE release notes.

For the MCR release highlights, see MCR documentation: MCR release notes.


Due to the development limitations, the MCR upgrade to version 19.03.13 or 19.03.14 on existing Container Cloud clusters is not supported.

Additional regional cluster on VMware vSphere

Technical Preview

In scope of Technology Preview support for the VMware vSphere provider, added the capability to deploy an additional regional vSphere-based cluster on top of the vSphere management cluster to create managed clusters with different configurations if required.

Automated setup of a VM template for the VMware vSphere provider

Technical Preview

Automated the process of a VM template setup for the vSphere-based management and managed clusters deployments. The VM template is now set up by Packer using the vsphere_template flag that is integrated into bootstrap.sh.

StackLight support for VMware vSphere

Technical Preview

Added the capability to deploy StackLight on management clusters. However, such deployment has the following limitations:

  • The Kubernetes Nodes and Kubernetes Cluster Grafana dashboards may have empty panels.

  • The DockerNetworkUnhealthy and etcdGRPCRequestsSlow alerts may fail to raise.

  • The CPUThrottlingHigh, CalicoDatapaneIfaceMsgBatchSizeHigh, KubeCPUOvercommitPods, KubeMemOvercommitPods alerts, and the TargetDown alert for the prometheus-node-exporter and calico-node pods may be constantly firing.

Support of multiple host-specific L2 templates per a bare metal cluster

Added support of multiple host-specific L2 templates to be applied to different nodes of the same bare metal cluster. Now, you can use several independent host-specific L2 templates on a cluster to support different hardware configurations. For example, you can create L2 templates with a different number and layout of NICs to be applied to the specific machines of a cluster.

Improvements in the Container Cloud logs collection

Improved user experience with the Container Cloud resources logs collection by implementing collecting of logs on the Mirantis Kubernetes Engine cluster and on all Kubernetes pods, including the ones that were previously removed or failed.