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

This chapter's focus was on RBAC policy creation and debugging. We explored how Kubernetes defines authorization policies and how it applies those policies to enterprise users. We also looked at how these policies can be used to enable multi-tenancy in your cluster. Finally, we enabled the audit log in our KinD cluster and learned how to use the audit2rbac tool to debug RBAC issues.

Using Kubernetes' built-in RBAC policy management objects lets you enable access that's needed for operational and development tasks in your clusters. Knowing how to design policies can help limit the impact of issues, providing the confidence to let users do more on their own.

In the next chapter, we'll be learning about how to secure the Kubernetes dashboard, as well as how to approach security for other infrastructure applications that make up your cluster. You'll learn how to apply what we've learned about authentication and authorization to the applications...