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

Questions

  1. True or false – ABAC is the preferred method of authorizing access to Kubernetes clusters.

    A. True

    B. False

  2. What are the three components of a Role?

    A. Subject, noun, and verb

    B. Resource, action, and group

    C. apiGroups, resources, and verbs

    D. Group, resource, and sub-resource

  3. Where can you go to look up resource information?

    A. Kubernetes API reference

    B. The library

    C. Tutorials and blog posts

  4. How can you reuse Roles across namespaces?

    A. You can't; you need to re-create them.

    B. Define a ClusterRole and reference it in each namespace as a RoleBinding.

    C. Reference the Role in one namespace with the RoleBindings of other namespaces.

    D. None of the above.

  5. How should bindings reference users?

    A. Directly, listing every user.

    B. RoleBindings should only reference service accounts.

    C. Only ClusterRoleBindings should reference users.

    D. Whenever possible, RoleBindings and ClusterRoleBindings should reference groups.

  6. True or false – RBAC can be used...