1. Control Plane The control plane is a collection of multiple components responsible for managing the cluster itself globally. Essentially, the control plane controls the cluster. Individual control plane components can run on any machine in the cluster, but usually are run on dedicated controller machines.
Component tools 1. Etcd A distributed, reliable key-value store for the most critical data of a distributed system etcd default port: 2379 ./etcdctl set key1 value1 ./etcdctl get key1 Every information you see when you run the kubectl get command is from the Etcd Server. To list all keys stored by Kubernetes, run the command like this. Run inside the etcd-master POD. kubectl exec etcd-master -n kube-system etcdctl get / --prefix -keys-only 2....