As a developer or K8s administrator most of the time you will deal with worker nodes, whether you have to deploy your containerized app or you have to autoscale it, or you have to roll out any new app update on your production-grade server, you will often deal with worker nodes.

As this node does the actual work required by the cluster administrator or developer, it is known as worker nodes. Worker node can have one or more pods, these pods are your abstraction of a containerized application. Every worker as shown in the fig:2.0 runs these 3 key processes

Container Runtime

kubelet

kube-proxy