What is the role of kube-proxy in the Kubernetes architecture and what is it used for?

The kube-proxy component in Kubernetes is responsible for network routing and load balancing within the cluster. Its main role is to provide access to Kubernetes Services by redirecting traffic to the appropriate pods.

kube-proxy runs on each node and manages network interaction rules using different mechanisms (iptables, IPVS, or userspace) to:

• Redirect requests to services to one of the available pods.
• Ensure load balancing among pods.
• Maintain network isolation and service accessibility.

Thus, kube-proxy is a key component that allows Kubernetes services to be accessible via stable IPs and ports, despite the dynamic changes in pods and their locations.