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Kubernetes Cookbook

You're reading from   Kubernetes Cookbook Practical solutions to container orchestration

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Product type Paperback
Published in May 2018
Publisher Packt
ISBN-13 9781788837606
Length 554 pages
Edition 2nd Edition
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Authors (3):
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Hideto Saito Hideto Saito
Author Profile Icon Hideto Saito
Hideto Saito
Hui-Chuan Chloe Lee Hui-Chuan Chloe Lee
Author Profile Icon Hui-Chuan Chloe Lee
Hui-Chuan Chloe Lee
Ke-Jou Carol Hsu Ke-Jou Carol Hsu
Author Profile Icon Ke-Jou Carol Hsu
Ke-Jou Carol Hsu
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Toc

Table of Contents (11) Chapters Close

Preface 1. Building Your Own Kubernetes Cluster FREE CHAPTER 2. Walking through Kubernetes Concepts 3. Playing with Containers 4. Building High-Availability Clusters 5. Building Continuous Delivery Pipelines 6. Building Kubernetes on AWS 7. Building Kubernetes on GCP 8. Advanced Cluster Administration 9. Logging and Monitoring 10. Other Books You May Enjoy

Building multiple masters

The master node serves as a kernel component in the Kubernetes system. Its duties include the following:

  1. Pushing and pulling information from etcd servers
  2. Acting as the portal for requests
  3. Assigning tasks to nodes
  4. Monitoring the running tasks

Three major daemons enable the master to fulfill the preceding duties; the following diagram indicates the activities of the aforementioned bullet points:

The interaction between the Kubernetes master and other components

As you can see, the master is the communicator between workers and clients. Therefore, it will be a problem if the master crashes. A multiple-master Kubernetes system is not only fault tolerant, but also workload-balanced. It would not be an issue if one of them crashed, since other masters would still handle the jobs. We call this infrastructure design high availability, abbreviated to HA. In...

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