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Mastering Kubernetes, - Third Edition

You're reading from Mastering Kubernetes, - Third Edition

Product type Book

Published in Jun 2020

Publisher Packt

ISBN-13 9781839211256

Pages 642 pages

Edition 3rd Edition

Languages

Concepts

Containerization

Author (1):

Gigi Sayfan

Table of Contents (19) 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

Stateful versus stateless applications in Kubernetes

8. Deploying and Updating Applications

9. Packaging Applications

10. Exploring Advanced Networking

11. Running Kubernetes on Multiple Clouds and Cluster Federation

12. Serverless Computing on Kubernetes

13. Monitoring Kubernetes Clusters

14. Utilizing Service Meshes

15. Extending Kubernetes

16. The Future of Kubernetes

17. Other Books You May Enjoy

18. Index

Mixing non-cluster components

Most real-time system components in the Kubernetes cluster will communicate with out-of-cluster components. Those could be completely external third-party services accessible through some API, but can also be internal services running in the same local network that, for various reasons, are not part of the Kubernetes cluster.

There are two categories here: inside the cluster network and outside the cluster network. Why is the distinction important?

Outside-the-cluster-network components

These components have no direct access to the cluster. They can only access it through APIs, externally visible URLs, and exposed services. These components are treated just like any external user. Often, cluster components will just use external services, which pose no security issue. For example, in a previous job we had a Kubernetes cluster that reported exceptions to a third-party service (https://sentry.io/welcome/). It was one-way communication from the...

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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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