Prerequisites for Upgrading VMware Kubernetes Cluster (CaaS)

• The default FORWARD Policy needs to be ACCEPT on all the Control Node VMs.
  Command to set the Forward Polcy to accept:

  iptables -P FORWARD ACCEPT

• Ensure libsemanage library is installed on all Cluster node VMs
  Command to verify if the package is installed:

  yum list installed | grep libsemanage

• The supported version of Python for VMware Telco Cloud Service Assurance 2.4 is 3.6.8. If there are other versions of Python installed on the Cluster VMs, then those needs to be uninstalled.
• You must backup the existing folder where previous Kubernetes Cluster (CaaS) bundle was extracted.

   mv $HOME/k8s-installer/ $HOME/k8s-installer_older/

• Ensure that docker version 23.0 or later is installed in the deployment host.

  OR

• Ensure that podman-docker version 4.6.1 or later is installed in the deployment host.
  Note: If you want to use podman-docker, execute the following command to remove the underlying docker-ce packages and install podman-docker.

  yum install -y podman-docker --allowerasing