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

Configuring alarms


In a vSphere environment, there are conditions (such as datastores running out of space) that you want to know about before things run out of control. In the datastores running out of space example, you would want to be warned before the datastore is full, so you can move some disks to another datastore to create extra free space on the datastore that is running out of space.

VMware vSphere provides alarms that trigger warnings and alerts when certain conditions are met. There are a lot of predefined alarms for almost every condition possible in vCenter Server. For example, there is the Datastore usage on disk alarm for datastores that will, by default, give you a warning if a datastore usage is more than 75 %and give you an alert if a datastore usage is more than 85 %. It is also possible to define actions such as Send a notification email that are executed when an alarm is triggered.

In PowerCLI, there are various cmdlets to modify alarm definitions and to create and modify...