Worker Nodes

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Functions

Worker nodes is the location where your apps operate
Communication between master and worker nodes is via kubelet process
Docker along with kubelet works together on worker nodes to run containers on node

Kube-proxy

Network proxy/load balancer on single worker node
Handles network routing for TCP/UDP packets
Connection forwarding

Pod

Pod is smallest unit of deployment in Kubernetes
Containers in a pod are tightly coupled and share storage, linux namespaces, IP addresses etc.

Post Scheduling

Once pods are scheduled and running
- kubelet process checks health
- Kube-proxy routes packets from communicating processes
Worker nodes are exposed to the internet and traffic coming in is handled via kube-proxy
User thus communicates with the Kube app