CNI
CNI (Container Network Interface) is a specification and library for configuring network interfaces in Linux containers, primarily used in container orchestration systems like Kubernetes. It defines a plugin-based architecture that allows different networking solutions to be integrated seamlessly, enabling containers to communicate with each other and external networks. CNI plugins handle tasks such as IP address assignment, routing, and network policy enforcement.
Developers should learn CNI when working with containerized environments, especially in Kubernetes clusters, to manage networking for pods and services effectively. It is essential for implementing custom networking solutions, ensuring secure and scalable communication between containers, and integrating with cloud-native infrastructure. Use cases include setting up overlay networks, load balancing, and network security policies in microservices architectures.