What are the Kubernets network requirements?

This article shows you what the Kubernets network requirements are, the content is concise and easy to understand, it will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

Pod communication

Kubernetes requires the underlying network to support direct TCP/IP communication between any two Pod in the cluster, which is usually implemented by virtual layer 2 network technologies, such as Flannal, Open vSwitch, etc., so we need to keep in mind that in Kubernetes, the container in one Pod can communicate directly with the Pod container on another host.

Kubernetes network implementation

In order to support the communication of business application components, the Kubernetes network is designed to solve the following problems:

Direct communication from container to container

Communication between abstract Pod and Pod

Communication between Pod and Service

Communication between Pod within the same Node

Communication between Pod on different Node

Communication between external and internal components of a cluster

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