Precursor: I am not experienced in the design of large-scale infrastructure deployments for infra applications.
The assumptions for the questions:
If we consider both points above, then the question are:
Q1a) How do you scale the Kubernetes administration/control plane? How do you scale from 1 etcd server to 10 etcd servers for example?
Q1b) In a large organization where there are different business units, do you deploy one K8S instance (active/passive) for each business unit, or multiple K8S instances serving the entire organization?
Q2) For each deployment method described in part (1b), how do you reconcile multiple instances of Kubernetes to get a master view in order to monitor all the instances of containers running on Kubernetes?
For Q1a - Have you seen this high availability guide in the docs? - https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/high-availability/ Q1b Would be a business decision which depends upon that organisation's particular needs, as well as the management structure of the organisation and its policies. Thank you. I think that answers the questions