Book Image

Kubernetes – An Enterprise Guide - Second Edition

By : Marc Boorshtein, Scott Surovich
Book Image

Kubernetes – An Enterprise Guide - Second Edition

By: Marc Boorshtein, Scott Surovich

Overview of this book

Kubernetes has taken the world by storm, becoming the standard infrastructure for DevOps teams to develop, test, and run applications. With significant updates in each chapter, this revised edition will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book introduces you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll get to grips with containerization and understand its core functionalities such as creating ephemeral multinode clusters using KinD. The book has replaced PodSecurityPolicies (PSP) with OPA/Gatekeeper for PSP-like enforcement. You’ll integrate your container into a cloud platform and tools including MetalLB, externalDNS, OpenID connect (OIDC), Open Policy Agent (OPA), Falco, and Velero. After learning to deploy your core cluster, you’ll learn how to deploy Istio and how to deploy both monolithic applications and microservices into your service mesh. Finally, you will discover how to deploy an entire GitOps platform to Kubernetes using continuous integration and continuous delivery (CI/CD).
Table of Contents (17 chapters)
15
Other Books You May Enjoy
16
Index

Building and Deploying Applications on Istio

In the previous chapter, we deployed Istio and Kiali into our cluster. We also deployed an example application to see how the pieces fit together. In this chapter, we're going to look at what it takes to build applications that will run on Istio. We'll start by examining the differences between microservices and monolithic applications. We'll start by deploying a monolithic application on Istio, and then transition to building microservices that will run on Istio. This chapter will cover:

  • Technical requirements
  • Comparing microservices and monoliths
  • Deploying a monolith
  • Building a microservice
  • Do I need an API gateway?

Once you have completed this chapter, you'll have a practical understanding of the difference between a monolith and a microservice, along with the information you'll need to determine which one is best for you, and will also have deployed a secured microservice...