The master node is also known as a control plane that is responsible to manage worker/slave nodes efficiently. They interact with the worker node to

Schedule the pods

Monitor the worker nodes/Pods

Start/restart the pods

Manage the new worker nodes joining the cluster

Master Node Processes:

Every master nodes in the K8s cluster runs the following key processes

kube-apiserver

kubectl: kube-controller-manager

kube-scheduler

etcd

Let’s look into each one of the processes in detail