9 Removing a Kubernetes Cluster

Important:

The software described in this documentation is either in Extended Support or Sustaining Support. See Oracle Open Source Support Policies for more information.

We recommend that you upgrade the software described by this documentation as soon as possible.

To remove a Kubernetes cluster, use the olcnectl module uninstall command. For example, to uninstall the Kubernetes module named mycluster:

olcnectl module uninstall \
--environment-name myenvironment \
--name mycluster

On each node, the Kubernetes containers are stopped and deleted, the Kubernetes cluster is removed, and the kubelet service is stopped.

Uninstalling a module also removes the module configuration from the Platform API Server. If you uninstall a module and want to reinstall it, you need to create the module again using the olcnectl module create command.

Tip:

If you reinstall a Kubernetes module on hosts that were used in a previous Kubernetes cluster, run the sudo kubeadm reset -f command on each node before you redeploy the module.