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Mastering PowerCLI

You're reading from   Mastering PowerCLI Master PowerCLI to automate all aspects of VMware environments

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Product type Paperback
Published in Oct 2015
Publisher Packt
ISBN-13 9781785286858
Length 430 pages
Edition 1st Edition
Languages
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Author (1):
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Sajal Debnath Sajal Debnath
Author Profile Icon Sajal Debnath
Sajal Debnath
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Table of Contents (14) Chapters Close

Preface 1. PowerShell and PowerCLI Refresher FREE CHAPTER 2. Reusable Advanced Functions and Scripts 3. Deploying vSphere Hosts 4. Managing Networks 5. Managing Storage 6. Managing Clusters and Other Constructs 7. Managing Virtual Machines 8. Managing vSphere Security, SRM, vCloud Air, and vROps 9. Managing the vSphere API 10. Using REST APIs 11. Creating Windows GUI 12. Best Practices and Sample Scripts Index

Dynamic parameters


All the earlier examples were examples of static parameters. Before the cmdlets of the function are executed, these parameters come into existence and remain available for the entire duration of the scope of the function. Dynamic parameters are those parameters that are defined in such a way that depending on certain conditions only, they come into existence. It may be designed in such a way that a dynamic parameter will come into existence only when another parameter is used in the function or a parameter has a certain value. So, late binding is applied for these types of parameters.

For example, let's discuss the following requirements:

  • We want to create a VM, provided the VM name is given by a user.

  • We have three different environments named Dedicated, Shared, and Cloud where the VM can be created.

  • If any environment is not mentioned by a user, then by default the VM will be created in the shared environment.

  • For a shared and Cloud environment, providing a VM name would...

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