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The Kubernetes Book

You're reading from The Kubernetes Book The fastest way to get your head around Kubernetes

Product type Paperback

Published in Jun 2019

Publisher

ISBN-13 9781838984380

Length 228 pages

Edition 1st Edition

Tools

Docker

Concepts

Containerization

Authors (2):

Nigel Poulton

Pushkar Joglekar

View More author details

Table of Contents (23) Chapters

Preface

About the Book

1. Chapter 1

2. Kubernetes Primer FREE CHAPTER

3. Chapter 2

4. Kubernetes Principles of Operation

5. Chapter 3

6. Installing Kubernetes

7. Chapter 4

8. Working with Pods

9. Chapter 5

10. Kubernetes Deployments

11. Chapter 6

12. Kubernetes Services

13. Chapter 7

14. Kubernetes Storage

15. Chapter 8

16. Other Important Kubernetes Stuff

17. Chapter 9

18. Threat Modeling Kubernetes

19. Chapter 10

20. Real-World Kubernetes Security

21. Chapter 11

22. What Next

Autoscaling

Chapter 5, Kubernetes Deployments showed us how to manually scale the number of Pod replicas. However, manually scaling a set of Pods does not scale (excuse the pun). As an example, if demand on your application spikes at 4:20 a.m. it's far from ideal if you need to page an operator who will then log on to the cluster and manually increase the number of replicas. The same applies if you need to scale the number of nodes to your cluster.

With these challenges in mind, Kubernetes offers several auto scaling technologies.

The Horizontal Pod Autoscaler (HPA) dynamically increases and decreases the number of Pods in a Deployment based on demand.

The Cluster Autoscaler (CA) dynamically increases and decreases the number of nodes in your cluster based on demand.

The Vertical Pod Autoscaler (VPA) attempts to right size your Pods, but it's currently an alpha product.

Horizontal Pod Autoscaler (HPA)

HPAs are stable resources in the autoscaling/v1 API group...

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Authors (2)

Nigel Poulton

Nigel Poulton

Nigel Poulton is a cloud-native subject matter expert who spends his life creating books and training videos on the latest cloud technologies. He is the author of best-selling books on Docker and Kubernetes and the most popular online training videos on the same topic. He is a Docker Captain. Prior to this, Nigel has held various infrastructure roles for large enterprises. When he is not playing with technology, he is dreaming about it. When he is not dreaming about it, he is reading and watching sci-fi. He wishes he lived in the future so he could explore spacetime, the universe, and tons of other mind-blowing stuff. He likes cars, football (soccer), and food. He has a fabulous wife and three children.

See other products by Nigel Poulton

Pushkar Joglekar

Pushkar Joglekar

Pushkar Joglekar is currently working as a defensive security engineer at the cross-roads of containers, applied machine learning, and distributed systems. In the last few years, he has built multiple secure by design production container deployments for a Fortune 100 company. When not securing containers, he spends his time exploring neighborhood bike trails and capturing beautiful sunsets with his camera while sipping home-made masala ginger chai. He lives with his wonderful wife, who happens to be the real engineer among them.

See other products by Pushkar Joglekar

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