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

Questions

  1. How does a service know what pods should be used as endpoints for the service?
    1. By the service port
    2. By the namespace
    3. By the author
    4. By the selector label
  2. What kubectl command helps you to troubleshoot services that may not be working properly?
    1. kubectl get services <service name>
    2. kubectl get ep <service name>
    3. kubectl get pods <service name>
    4. kubectl get servers <service name>
  3. All Kubernetes distributions include support for services that use the LoadBalancer type.
    1. True
    2. False
  4. Which load balancer type supports all TCP/UDP ports and accepts traffic regardless of the packet's contents?
    1. Layer 7
    2. Cisco layer
    3. Layer 2
    4. Layer 4
  5. Without any added components, you can use multiple protocols using which of the following service types...