You can upgrade the existing Management Kubernetes Cluster version to the latest versions of Kubernetes supported in the current version of the VMware Telco Cloud Automation.

You can upgrade the Kubernetes cluster through VMware Telco Cloud Automation.

The following table lists the Kubernetes upgrade compatibility for the Management cluster when upgrading from VMware Telco Cloud Automation.
VMware Telco Cloud Automation Existing Kubernetes Versions 1.21.8
2.0.0 1.21.2 Yes
2.0.1 1.21.8 Yes
Before upgrading Kubernetes to the latest version, consider the following constraints and prepare for the upgrade plan:
  • VMware Telco Cloud Automation preserves the customization performed through previous CNF instantiate / upgrade on the nodepools of the cluster. Any manual changes performed directly on the nodes are not preserved.
  • Applications may face downtime during kubernetes upgrade and may take some time to be available for operations.
  • Clusters may take some time to be available for operations.
  • Check and upgrade the required node pools in the Workload cluster.
  • The IP address of master nodes and the worker nodes changes after upgrade.
  • If the upgrade fails, you can correct the configuration and perform the upgrade again.