What is the purpose of the kube-proxy?

While it contributes to load balancing, its primary mechanism is maintaining network rules, not directly balancing requests in the sense of a traditional load balancer.

The kube-proxy runs on each node and implements the Kubernetes Service concept by maintaining network rules (e.g., iptables or IPVS) to route traffic from a Service IP to the correct backend Pods, ensuring network connectivity within the cluster.

Ensuring cluster connectivity with the internet is typically handled by Ingress controllers, external load balancers, or network gateway configurations, not the kube-proxy itself.

DNS rules for the cluster are maintained by CoreDNS, which is another crucial Kubernetes component, not the kube-proxy.