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kubectl: Command-Line Kubernetes in a Nutshell

You're reading from   kubectl: Command-Line Kubernetes in a Nutshell Deploy, manage, and debug container workloads using the Kubernetes CLI

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Product type Paperback
Published in Nov 2020
Publisher Packt
ISBN-13 9781800561878
Length 136 pages
Edition 1st Edition
Concepts
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Author (1):
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Rimantas Mocevicius Rimantas Mocevicius
Author Profile Icon Rimantas Mocevicius
Rimantas Mocevicius
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Toc

Table of Contents (16) Chapters Close

Preface 1. Section 1: Getting Started with kubectl
2. Chapter 1: Introducing and Installing kubectl FREE CHAPTER 3. Section 2: Kubernetes Cluster and Node Management
4. Chapter 2: Getting Information about a Cluster 5. Chapter 3: Working with Nodes 6. Section 3: Application Management
7. Chapter 4: Creating and Deploying Applications 8. Chapter 5: Updating and Deleting Applications 9. Chapter 6: Debugging an Application 10. Section 4: Extending kubectl
11. Chapter 7: Working with kubectl Plugins 12. Chapter 8: Introducing Kustomize for Kubernetes 13. Chapter 9: Introducing Helm for Kubernetes 14. Chapter 10: kubectl Best Practices and Docker Commands 15. Other Books You May Enjoy

Cluster information

It is always good to know which version of the Kubernetes server (API) is installed for a Kubernetes cluster as you might want to use particular features available in that version. To check the server version, run the following:

$ kubectl version --short
Client Version: v1.18.1
Server Version: v1.17.5-gke.9

The server version is v1.17.5 and the kubectl version is v1.18.1. Note that the -gke.9 bit of the server version is the internal GKE revision; as we mentioned earlier, for the book's purposes, a GKE cluster is used.

Important note

The kubectl version can be a more recent one; it does not really have to match the server version, as the latest version is usually backward compatible. However, it is not recommended to use an older kubectl version with a more recent server version.

Next, let's check the cluster server information by running the following command:

$ kubectl cluster-info
Kubernetes master is running at https://35.223.200...
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