CNI Plugins in Kubernetes Explained: The Networking Engine Behind Every Pod

You create a Pod. It gets an IP address and can communicate with other Pods. But how does that actually happen? Kubernetes doesn’t manage networking itself. It delegates the entire job to CNI Plugins — the invisible plumbing system of Kubernetes. Kubernetes schedules Pods, but CNI plugins give them network identity and connectivity . Let’s break it down clearly. What is CNI? Container Network Interface is a specification , not a single tool. It defines a standard way for Kubernetes (and containe