PowerCLI

VMware vSphere PowerCLI is a must-have tool for any administrator managing VMware vSphere in a Windows environment. Having to repeat vSphere administrative tasks can be time consuming and error-prone, but PowerCLI—created specifically for Windows environments—allows VMware administrators to automate tasks. Written to the latest PowerCLI, this handy guide shows you step by step how to use the PowerCLI cmdlets for daily administration procedures and frequently performed tasks for VMware vSphere. The reference is organized by vSphere tasks, providing a practical approach to accessing the information you need while you are on the job. Supported by real world examples and no-nonsense instruction, coverage includes installation, configuration, and management of a vSphere environment, management of the virtual machine life-cycle, security, and monitoring and reporting.

Paperback: 504 pages

Publisher: Sybex (April 12, 2011)

Language: English

ISBN-10: 0470890797

ISBN-13: 978-0470890790

Amazon Comcol Sybex

With the latest release of PowerCLI (4.1.1)  VMware has introduced a real cool new commandlet.

Get-EsxTop exposes esxtop functionality. The default parameter set is CounterValues. The Counter parameter filters the specified statistics. To retrieve all available counters, use the CounterInfo parameter set. The properties of each counter are returned through the Fields property (an array) of the CounterInfo output object. You can also retrieve stats topologies using the TopogyInfo parameter set. This information contains either inventory data that does not change or a counter instance structure describing the relationship between different counter instances.

http://blogs.vmware.com/vipowershell/