The control plane node sizing that Dell Technologies recommends in Modern data stack control plane node is adequate for all production clusters and should not be changed. The controller manager, API, and etcd services must be deployed on three individual nodes.
The control plane services also consume a small quantity of worker node resources. Sizing in this design guide allocates 49 GB and four cores to these services. Approximately 320 GB of storage for the control plane is also required on worker nodes. This space is allocated from the boot drives and does not impact available server storage for user workloads.