You're reading from The Kubernetes Bible The definitive guide to deploying and managing Kubernetes across major cloud platforms

Product type Paperback

Published in Feb 2022

Publisher Packt

ISBN-13 9781838827694

Length 680 pages

Edition 1st Edition

Tools

Kubernetes

Concepts

Containerization

Authors (3):

Nassim Kebbani

Piotr Tylenda

Russ McKendrick

View More author details

Table of Contents (28) Chapters

Preface

1. Section 1: Introducing Kubernetes

2. Chapter 1: Kubernetes Fundamentals FREE CHAPTER

3. Chapter 2: Kubernetes Architecture – From Docker Images to Running Pods

4. Chapter 3: Installing Your First Kubernetes Cluster

5. Section 2: Diving into Kubernetes Core Concepts

6. Chapter 4: Running Your Docker Containers

7. Chapter 5: Using Multi-Container Pods and Design Patterns

8. Chapter 6: Configuring Your Pods Using ConfigMaps and Secrets

9. Chapter 7: Exposing Your Pods with Services

10. Chapter 8: Managing Namespaces in Kubernetes

11. Chapter 9: Persistent Storage in Kubernetes

12. Section 3: Using Managed Pods with Controllers

13. Chapter 10: Running Production-Grade Kubernetes Workloads

14. Chapter 11: Deployment – Deploying Stateless Applications

15. Chapter 12: StatefulSet – Deploying Stateful Applications

16. Chapter 13: DaemonSet – Maintaining Pod Singletons on Nodes

17. Section 4: Deploying Kubernetes on the Cloud

18. Chapter 14: Kubernetes Clusters on Google Kubernetes Engine

19. Chapter 15: Launching a Kubernetes Cluster on Amazon Web Services with Amazon Elastic Kubernetes Service

20. Chapter 16: Kubernetes Clusters on Microsoft Azure with Azure Kubernetes Service

21. Section 5: Advanced Kubernetes

22. Chapter 17: Working with Helm Charts

23. Chapter 18: Authentication and Authorization on Kubernetes

24. Chapter 19: Advanced Techniques for Scheduling Pods

25. Chapter 20: Autoscaling Kubernetes Pods and Nodes

26. Chapter 21: Advanced Traffic Routing with Ingress

27. Other Books You May Enjoy

The kube-apiserver component

Kubernetes' most important component is a REST API called kube-apiserver, Essentially, this is an API that exposes all Kubernetes features. You interact with Kubernetes by calling this REST API through the kubectl command-line tool.

The role of kube-apiserver

This is a component that is part of the control plane, meaning it's something to install and run on a master node. The kube-apiserver component is so important in Kubernetes that, sometimes, people believe it is Kubernetes itself. However, it's not. kube-apiserver is simply one component of the orchestrator. It's the most important, yes, but it's just one of them.

It's implemented in Go. Its code is open source, under the Apache 2.0 license, and you can find it hosted on GitHub.

When working with Kubernetes, the workflow is simple. When you want to give an instruction to Kubernetes, you will always have to send an HTTP request to kube-apiserver. When you want...