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The Kubernetes Workshop

The Kubernetes Workshop

By : Zachary Arnold , Sahil Dua , Wei Huang , Faisal Masood, Mélony Qin, Mohammed Abu Taleb
4.9 (9)
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The Kubernetes Workshop

The Kubernetes Workshop

4.9 (9)
By: Zachary Arnold , Sahil Dua , Wei Huang , Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)
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Preface

DaemonSets

DaemonSets are used to manage the creation of a particular Pod on all or a selected set of nodes in a cluster. If we configure a DaemonSet to create Pods on all nodes, then if new nodes are added to the cluster, new pods will be created to run on these new nodes. Similarly, if some nodes are removed from the cluster, the Pods running on these nodes will be destroyed.

Use Cases for DaemonSets

  • Logging: One of the most common use cases for a DaemonSet is to manage running a log collection Pod on all nodes. These Pods can be used to collect logs from all the nodes and then process them in a log processing pipeline.
  • Local data caching: A DaemonSet can also be used to manage caching Pods on all the nodes. These Pods can be used by other application Pods to store the cached data temporarily.
  • Monitoring: Another use case for a DaemonSet is to manage running monitoring Pods on all the nodes. This can be used to collect system- or application-level metrics for Pods...

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