CNI

Four Core Requirements of the Kubernetes Networking Model The Kubernetes networking model is built on four core requirements. Understanding them is the foundation for mastering K8s networking. According to the official Kubernetes networking model documentation, these four requirements form the cornerstone of cluster network communication. 1. Pod-to-Pod Communication K8s requires that all Pods can communicate directly via IP without NAT (Network Address Translation). This means: Each Pod has its own IP address Pod-to-Pod communication uses real Pod IPs, without NAT translation Regardless of which Node a Pod is scheduled on, the Pod-to-Pod network remains flat and reachable This is the most fundamental design decision in the K8s networking model....