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

Integrating Authentication into Your Cluster

Once a cluster has been built, users will need to interact with it securely. For most enterprises, this means authenticating individual users and making sure they can only access what they need in order to do their jobs. With Kubernetes, this can be challenging because a cluster is a collection of APIs, not an application with a frontend that can prompt for authentication.

In this chapter, you'll learn how to integrate enterprise authentication into your cluster using the OpenID Connect protocol and Kubernetes impersonation. We'll also cover several anti-patterns and explain why you should avoid using them.

In this chapter, we will cover the following topics:

  • Understanding how Kubernetes knows who you are
  • Understanding OpenID Connect
  • Configuring KinD for OpenID Connect
  • How cloud Kubernetes knows who you are
  • Configuring your cluster for impersonation
  • Configuring impersonation without...