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

Using Distributed Power Management


The load of your virtual machines is probably not always the same. Sometimes, they need more resources, and sometimes, they need fewer resources. Distributed Power Management (DPM) will use DRS to consolidate virtual machines on fewer ESXi hosts during periods of low resource utilization. The unused ESXi hosts will be powered off. If more resources are needed, DPM will power on ESXi hosts, and DRS will move virtual machines to these hosts. DPM will save you or your company money in power and cooling costs.

Enabling DPM

DPM has two modes: manual and automatic. In manual mode, DPM will give recommendations to evacuate virtual machines from hosts and power off or power on the hosts. You will have to apply the recommendations manually. In automatic mode, DPM will automatically apply DPM recommendations above a certain threshold.

In the following screenshot of the vSphere Web Client, you will see the DPM settings of a cluster with Automation Level set to Manual...