Networks in Kubernetes

Introduction

To ensure network security, the AKS cluster blocks all inbound traffic from the internet to the cluster. By default, the workloads deployed in Kubernetes aren’t accessible to anyone. It can be accessed by only those inside the cluster. We need to expose some specific ports in order to make our application available to the outside world.

The port configuration and port forwarding processes are different in Kubernetes. Usually, when working on virtual machines, we just configure the OS-level firewall to allow inbound traffic to port 444 and allow HTTPS web traffic. In Kubernetes, the control plan manages the network configuration.

Network in Kubernetes

• In containers, the network configurations are temporary.

• The container configuration and the data present in the containers are not persistent between executions.

• Unless and until we attach some volume to our container, the data within the containers gets lost.

• This doesn’t happen to only the data; the network configuration and the IP address assigned to ...