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Mastering Kubernetes - Fourth Edition

You're reading from Mastering Kubernetes - Fourth Edition

Product type Book

Published in Jun 2023

Publisher Packt

ISBN-13 9781804611395

Pages 746 pages

Edition 4th Edition

Languages

Concepts

Containerization

Author (1):

Gigi Sayfan

Table of Contents (21) Chapters

Preface

1. Understanding Kubernetes Architecture

2. Creating Kubernetes Clusters

3. High Availability and Reliability

4. Securing Kubernetes

5. Using Kubernetes Resources in Practice

6. Managing Storage

7. Running Stateful Applications with Kubernetes

8. Deploying and Updating Applications

9. Packaging Applications

10. Exploring Kubernetes Networking

11. Running Kubernetes on Multiple Clusters

12. Serverless Computing on Kubernetes

13. Monitoring Kubernetes Clusters

14. Utilizing Service Meshes

15. Extending Kubernetes

16. Governing Kubernetes

17. Running Kubernetes in Production

18. The Future of Kubernetes

19. Other Books You May Enjoy

20. Index

Live cluster updates

One of the most complicated and risky tasks involved in running a Kubernetes cluster is a live upgrade. The interactions between different parts of the system when some parts have different versions are often difficult to predict, but in many situations, they are required. Large clusters with many users can’t afford to be offline for maintenance. The best way to attack complexity is to divide and conquer. Microservice architecture helps a lot here. You never upgrade your entire system. You just constantly upgrade several sets of related microservices, and if APIs have changed, then you upgrade their clients, too. A properly designed upgrade will preserve backward compatibility at least until all clients have been upgraded, and then deprecate old APIs across several releases.

In this section, we will discuss how to go about updating your cluster using various strategies, such as rolling updates, blue-green deployments, and canary deployments. We will...

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Authors (1)

Gigi Sayfan

Gigi Sayfan has been developing software for 25+ years in domains as diverse as instant messaging, morphing, chip fabrication process control, embedded multimedia applications for game consoles, brain-inspired ML, custom browser development, web services for 3D distributed game platforms, IoT sensors, virtual reality, and genomics. He has written production code in languages such as Go, Python, C, C++, C#, Java, Delphi, JavaScript, and even Cobol and PowerBuilder for operating systems such as Windows (3.11 through 7), Linux, macOS, Lynx (embedded), and Sony PlayStation. His technical expertise includes databases, low-level networking, distributed systems, containers, unorthodox user interfaces, modern web applications, and general SDLC.

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