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The Kubernetes Workshop

You're reading from  The Kubernetes Workshop

Product type Book
Published in Sep 2020
Publisher Packt
ISBN-13 9781838820756
Pages 780 pages
Edition 1st Edition
Languages
Authors (6):
Zachary Arnold Zachary Arnold
Profile icon Zachary Arnold
Sahil Dua Sahil Dua
Profile icon Sahil Dua
Wei Huang Wei Huang
Profile icon Wei Huang
Faisal Masood Faisal Masood
Profile icon Faisal Masood
Mélony Qin Mélony Qin
Profile icon Mélony Qin
Mohammed Abu Taleb Mohammed Abu Taleb
Profile icon Mohammed Abu Taleb
View More author details

Table of Contents (20) Chapters

Preface
1. Introduction to Kubernetes and Containers 2. An Overview of Kubernetes 3. kubectl – Kubernetes Command Center 4. How to Communicate with Kubernetes (API Server) 5. Pods 6. Labels and Annotations 7. Kubernetes Controllers 8. Service Discovery 9. Storing and Reading Data on Disk 10. ConfigMaps and Secrets 11. Build Your Own HA Cluster 12. Your Application and HA 13. Runtime and Network Security in Kubernetes 14. Running Stateful Components in Kubernetes 15. Monitoring and Autoscaling in Kubernetes 16. Kubernetes Admission Controllers 17. Advanced Scheduling in Kubernetes 18. Upgrading Your Cluster without Downtime 19. Custom Resource Definitions in Kubernetes

Managing the Kubernetes Scheduler

Kubernetes provides many parameters and objects through which we can manage the behavior of the Kubernetes Scheduler. We will look into the following ways of managing the scheduling process:

  • Node affinity and anti-affinity
  • Pod affinity and anti-affinity
  • Pod priority and preemption
  • Taints and tolerations

Node Affinity and Anti-Affinity

Using node affinity rules, a Kubernetes cluster administrator can control the placement of Pods on specific sets of nodes. Node affinity or anti-affinity allows you to constrain which nodes a Pod can run on based on the labels of the nodes.

Imagine that you are an administrator of the shared Kubernetes cluster in a bank. Multiple teams are running their applications on the same cluster. Your organization's security group has identified nodes that can run data-sensitive applications and would like you to make sure that no other applications run on those nodes. Node affinity or anti...

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