Compute scaling is accomplished by adding additional nodes to the cluster. After physical installation and provisioning of the operating system, the Red Hat OpenShift Container Platform can be added from the OpenShift management interface or the Red Hat Hybrid Cloud Portal. The nodes become parts of the cluster. The control plane and network are automatically scaled as new nodes are added.
For more details of the node provisioning process, see Deployment options from the Dell Technologies document Red Hat OpenShift Container Platform 4.12 on Intel-powered Dell Infrastructure Implementation Guide.