What a Kubernetes Service Actually Does
Kubernetes · CKA Course · Services
A Kubernetes Service provides an abstraction layer over a dynamic group of Pods. Pods are ephemeral and their IP addresses change frequently, but a Service gives clients a stable virtual IP (ClusterIP) and DNS name.
How kube-proxy Routes Traffic
kube-proxy watches the control plane for EndpointSlice objects and programs iptables or IPVS rules to forward incoming packets directly to healthy target Pod IPs without user-space proxy overhead.