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Learning PowerCLI

You're reading from Learning PowerCLI A comprehensive guide on PowerCLI

Product type Paperback

Published in Feb 2017

Publisher

ISBN-13 9781786468017

Length 562 pages

Edition 2nd Edition

Languages

PowerShell

Tools

PowerCLI

Concepts

Cloud Computing

Author (1):

Robert van den Nieuwendijk

View More author details

Table of Contents (16) Chapters

Preface

1. Introduction to PowerCLI FREE CHAPTER

2. Learning Basic PowerCLI Concepts

3. Working with Objects in PowerShell

4. Managing vSphere Hosts with PowerCLI

5. Managing Virtual Machines with PowerCLI

6. Managing Virtual Networks with PowerCLI

7. Managing Storage

8. Managing High Availability and Clustering

9. Managing vCenter Server

10. Patching ESXi Hosts and Upgrading Virtual Machines

11. Managing VMware vCloud Director and vCloud Air

12. Using Site Recovery Manager

13. Using vRealize Operations Manager

14. Using REST API to manage NSX and vRealize Automation

15. Reporting with PowerCLI

Using snapshots

Snapshots are a point in time to which you can revert a virtual machine and changes made to the virtual machine after creating the snapshot will be discarded. For example, snapshots are useful when you are installing or upgrading software on a virtual machine. If the installation or upgrade goes wrong, you can easily revert to the time the last snapshot was taken to get back to the state before you started the installation or upgrade. If you have verified that the installation or upgrade was successful, you should remove the snapshot, because snapshots use valuable space in your datastores and decrease the performance of your virtual machine.

Note

Snapshots are not backups!

In this section, we will discuss the PowerCLI commands to work with snapshots.

Creating snapshots

To create a new snapshot of a virtual machine, you have to use the New-Snapshot cmdlet. This cmdlet has the following syntax:

New-Snapshot [-VM] <VirtualMachine[]> [-Name] <String> 
    [-Description...

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Authors (1)

van den Nieuwendijk

van den Nieuwendijk

Robert van den Nieuwendijk is an IT veteran from the Netherlands with over thirty years of experience in Information Technology. He holds a bachelor degree in software engineering. After working a few years as a programmer of air traffic control and vessel traffic management systems, he started his own company Van den Nieuwendijk Informatica in 1988. Since then he has worked as a freelance systems administrator of OpenVMS, Windows Server, Linux, and VMware vSphere systems, for Dutch governmental organizations and cloud providers. During winter he is also a ski and snowboard instructor at an indoor ski school. With his background as a programmer, he always tries to make his job easier by writing programs or scripts to perform repeating tasks. In the past, he used the C programming language, OpenVMS DCL, Visual Basic Script and KiXtart to do this. Now, he uses Microsoft PowerShell and VMware PowerCLI for all of his scripting work. Robert is a frequent contributor and moderator at the VMware VMTN Communities. Since 2012 VMware awarded him the vExpert title for his significant contributions to the community and a willingness to share his expertise with others. He has a blog at http://rvdnieuwendijk.com where he writes mainly about VMware PowerCLI, Microsoft PowerShell, and VMware vSphere. If you want to get in touch with Robert, then you can find him on Twitter. His username is @rvdnieuwendijk. Robert is also the author of Learning PowerCLI, Packt Publishing.

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