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The way that you manage an OpenShift cluster does not change when CN2 is the CNI plug-in. Once CN2 is installed, CN2 components work seamlessly with OpenShift components to provide the networking infrastructure.

The Contrail controller is constantly watching and reacting to cluster events as they occur. When you add a new node, the Contrail data plane components are automatically deployed. When you delete a node, the Contrail controller automatically deletes networking resources associated with that node. CN2 works seamlessly with kubectl and oc commands as well as with the OpenShift console.

You cannot uninstall CN2. You cannot remove a CNI plug-in from an OpenShift cluster.

See the Appendix for examples of how to perform some common tasks on an OpenShift cluster. These examples are not specific to CN2 and are provided with no warranty.

The remainder of this chapter contains tasks that are specific to CN2.