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
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16
Index

An Introduction to Istio

"If it makes it easier for users to use on the frontend, it's probably complex on the backend."

Istio is a large, complex system that provides benefits to your workloads by offering enhanced security, discovery, observability, traffic management, and more – all without requiring application developers to write modules or applications to handle each task.

For most people, it has a large learning curve, but once you have the Istio skills to deploy and operate a service mesh, you will be able to provide very complex offerings to your developers, including the ability to do the following:

  • Route traffic based on various requirements
  • Secure service-to-service communication
  • Traffic shaping
  • Circuit breaking
  • Service observability

Again, all of these can be used by developers with very little, or no, code changes. When something is simple for users to consume, it usually means the system has a...