Introduction

In the past few chapters, we learned about Pods and Deployments, which help us run containerized applications. Now that we are equipped to deploy our applications, in this chapter, we will take a look at some API objects that help us with the networking setup to ensure that our users can reach our application and that the different components of our application, as well as different applications, can work together.

As we have seen in the previous chapters, each Kubernetes Pod gets its IP address. However, setting up networking and connecting everything is not as simple as coding in Pod IP addresses. We can't rely on a single Pod to run our applications reliably. Due to this, we use a Deployment to ensure that, at any given moment, we will have a fixed number of specific kinds of Pods running in the cluster. However, this means that during the runtime of our application, we can tolerate the failure of a certain number of Pods as new pods are automatically created...