Book Image

Kubernetes and Docker - An Enterprise Guide

By : Scott Surovich, Marc Boorshtein
Book Image

Kubernetes and Docker - An Enterprise Guide

By: Scott Surovich, Marc Boorshtein

Overview of this book

Containerization has changed the DevOps game completely, with Docker and Kubernetes playing important roles in altering the flow of app creation and deployment. This book will help you acquire the knowledge and tools required to integrate Kubernetes clusters in an enterprise environment. The book begins by introducing you to Docker and Kubernetes fundamentals, including a review of basic Kubernetes objects. You’ll then get to grips with containerization and understand its core functionalities, including how to create ephemeral multinode clusters using kind. As you make progress, you’ll learn about cluster architecture, Kubernetes cluster deployment, and cluster management, and get started with application deployment. Moving on, you’ll find out how to integrate your container to a cloud platform and integrate tools including MetalLB, externalDNS, OpenID connect (OIDC), pod security policies (PSPs), Open Policy Agent (OPA), Falco, and Velero. Finally, you will discover how to deploy an entire platform to the cloud using continuous integration and continuous delivery (CI/CD). By the end of this Kubernetes book, you will have learned how to create development clusters for testing applications and Kubernetes components, and be able to secure and audit a cluster by implementing various open-source solutions including OpenUnison, OPA, Falco, Kibana, and Velero.
Table of Contents (20 chapters)
1
Section 1: Docker and Container Fundamentals
5
Section 2: Creating Kubernetes Development Clusters, Understanding objects, and Exposing Services
9
Section 3: Running Kubernetes in the Enterprise

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 objects. Many of the objects 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 kube...