The Antrea CNI is a powerful tool for managing container networks. We dive into the Kubernetes networking model and show how to administer it using Antrea CNI. This includes exploring the model’s fundamental rules and the different types of network communication in Kubernetes, such as container-to-container, pod-to-pod, and pod-to-service. We also introduce Antrea’s components, including the controller, the agent, and the controller API server.
In many ways, a Kubernetes network mirrors a physical network. However, the transition from physical networks with switches and routers to virtual ones that use Software-Defined Networking (SDN) and virtual interfaces is not always straightforward. Kubernetes comes with its own specifications and best practices, making it essential to understand these concepts if you work with containers and the cloud.
The full article is available in the special issue II of IT-Administrator Magazine, November 2023.
