Kubernetes networking is an integral part of managing and making communication easier within a Kubernetes cluster. It manages a wide range of operations, such as:
- Handling internal container communication
- Exposing the containers to the internet
This article introduces you to key Kubernetes networking concepts.
(This article is part of our Kubernetes Guide. Use the right-hand menu to navigate.)
Networking in Kubernetes
First, let’s review the basic networking types in a Kubernetes cluster:
- Container-to-container networking
- Pod-to-pod networking
- Pod-to-service networking
- Internet-to-service networking
Now, let’s take a look at how each type operates to provide connectivity within the cluster.
Container-to-container networking
In the most basic configurations, container to container communication within a single pod takes place via the localhost and port numbers. This is possible because the containers in the pod are located in the same network namespace.
A network namespace…