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

Summary

In this chapter, you were thrown into a Kubernetes bootcamp that presented a lot of technical material in a short amount of time. Try to remember that this will all become easier as you get into the Kubernetes world in more depth. We realize that this chapter had a lot of information on many resources. Many of the resources will be used in later chapters, and they will be explained in greater detail.

You learned about each Kubernetes component and how they interact to create a cluster. With this knowledge, you have the required skills to look at errors in a cluster and determine which component may be causing an error or issue. We covered the control plane of a cluster where the api-server, kube-scheduler, Etcd, and control managers run. The control plane is how users and services interact with a cluster; using the api-server and the kube-scheduler will decide which worker node to schedule your Pod(s) on. You also learned about Kubernetes nodes that run the kubelet and...