Book Image

Learning PowerCLI - Second Edition

By : Robert van den Nieuwendijk
Book Image

Learning PowerCLI - Second Edition

By: Robert van den Nieuwendijk

Overview of this book

VMware vSphere PowerCLI, a free extension to Microsoft Windows PowerShell, enables you to automate the management of a VMware vSphere or vCloud environment. This book will show you how to automate your tasks and make your job easier. Starting with an introduction to the basics of PowerCLI, the book will teach you how to manage your vSphere and vCloud infrastructure from the command line. To help you manage a vSphere host overall, you will learn how to manage vSphere ESXi hosts, host profiles, host services, host firewall, and deploy and upgrade ESXi hosts using Image Builder and Auto Deploy. The next chapter will not only teach you how to create datastore and datastore clusters, but you’ll also work with profile-driven and policy-based storage to manage your storage. To create a disaster recovery solution and retrieve information from vRealize Operations, you will learn how to use Site Recovery Manager and vRealize Operations respectively. Towards the end, you’ll see how to use the REST APIs from PowerShell to manage NSX and vRealize Automation and create patch baselines, scan hosts against the baselines for missing patches, and re-mediate hosts. By the end of the book, you will be capable of using the best tool to automate the management and configuration of VMware vSphere.
Table of Contents (22 chapters)
Learning PowerCLI Second Edition
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface

Removing hosts from a VMware vCenter Server


To remove a host from your vCenter Server inventory, you have to use the Remove-VMHost cmdlet. The Remove-VMHost cmdlet has the following syntax:

Remove-VMHost [-VMHost] <VMHost[]> [-Server <VIServer[]>] 
    [-WhatIf] [-Confirm] [<CommonParameters>]

Let's try to remove a host, as seen in the following screenshot:

.

The operation failed because the host must be in maintenance mode or disconnected state before you can remove it, as you can see in the following screenshot from the vSphere Web Client:

So, let's put the host in maintenance mode first and then try to remove it:

PowerCLI C:\> $VMHost = Get-VMHost -Name 192.168.0.133
PowerCLI C:\> $VMHost | Set-VMHost -State Maintenance


    Name                 ConnectionState PowerState NumCpu CpuUsageMhz
----                 --------------- ---------- ------ -----------
192.168.0.133        Maintenance     PoweredOn       2          41


    PowerCLI...