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The Kubernetes Bible

You're reading from   The Kubernetes Bible The definitive guide to deploying and managing Kubernetes across cloud and on-prem environments

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Product type Paperback
Published in Nov 2024
Publisher Packt
ISBN-13 9781835464717
Length 720 pages
Edition 2nd Edition
Languages
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Authors (2):
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Gineesh Madapparambath Gineesh Madapparambath
Author Profile Icon Gineesh Madapparambath
Gineesh Madapparambath
Russ McKendrick Russ McKendrick
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Russ McKendrick
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Table of Contents (24) Chapters Close

Preface 1. Kubernetes Fundamentals FREE CHAPTER 2. Kubernetes Architecture – from Container Images to Running Pods 3. Installing Your First Kubernetes Cluster 4. Running Your Containers in Kubernetes 5. Using Multi-Container Pods and Design Patterns 6. Namespaces, Quotas, and Limits for Multi-Tenancy in Kubernetes 7. Configuring Your Pods Using ConfigMaps and Secrets 8. Exposing Your Pods with Services 9. Persistent Storage in Kubernetes 10. Running Production-Grade Kubernetes Workloads 11. Using Kubernetes Deployments for Stateless Workloads 12. StatefulSet – Deploying Stateful Applications 13. DaemonSet – Maintaining Pod Singletons on Nodes 14. Working with Helm Charts and Operators 15. Kubernetes Clusters on Google Kubernetes Engine 16. Launching a Kubernetes Cluster on Amazon Web Services with Amazon Elastic Kubernetes Service 17. Kubernetes Clusters on Microsoft Azure with Azure Kubernetes Service 18. Security in Kubernetes 19. Advanced Techniques for Scheduling Pods 20. Autoscaling Kubernetes Pods and Nodes 21. Advanced Kubernetes: Traffic Management, Multi-Cluster Strategies, and More 22. Other Books You May Enjoy 23. Index

Sharing volumes between containers in the same Pod

In this section, we’ll learn what volumes are from a Kubernetes point of view and how to use them. Docker also has volumes, but they differ from Kubernetes volumes: they answer the same need but they are not the same.

We will discover what Kubernetes volumes are, why they are useful, and how they can help us when it comes to Kubernetes volumes.

What are Kubernetes volumes?

We are going to answer a simple problem. Our multi-container Pods are currently made up of two containers: an NGINX one and a Debian one. We are going to try sharing the log directory in the NGINX container with the Debian container by mounting the log directory of NGINX in the directory of the Debian container. This way, we will create a relationship between the two containers to have them share a directory.

Kubernetes has two kinds of volumes:

  • Volumes, which we will discuss here.
  • PersistentVolume, which is a more advanced...
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