Windows PowerShell Desired State Configuration Revealed.pdf
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Contents at a Glance
About the Author �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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About the Technical Reviewer �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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Acknowledgments �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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Introduction �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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Part I: Introduction to Windows PowerShell �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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Chapter 1: Beginning Windows PowerShell�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½3
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Chapter 2: Introducing Windows Remote Management and CIM �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½43
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Part II: Desired State Configuration Essentials�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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Chapter 3: Introducing Desired State Configuration �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½77
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Chapter 4: Getting Started with DSC�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½91
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Chapter 5: Using Built-in DSC Resources �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½113
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Chapter 6: Building Advanced DSC Configurations �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½151
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Part III: Advanced DSC Concepts and Tips�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½
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Chapter 7: DSC Configuration Delivery Modes�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½179
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Chapter 8: Monitoring, Correcting, and Reporting Configuration �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½207
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Chapter 9: Building Custom DSC Resources �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½223
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Contents at a GlanCe
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Chapter 10: Troubleshooting Common DSC Issues �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½247
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Chapter 11: DSC—From the Field �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½257
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Appendix A: DSC Community Resources �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½269
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Appendix B: WMF 5�½0 and DSC for Linux �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½277
Index �½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½�½285
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Introduction
About the beginning of this year, Gwenan Spearing (at Apress) approached me to see if I was interested in writing a
book on Desired State Configuration (DSC). I couldn’t say no, because after Windows PowerShell remoting and
WMI/CIM, DSC has been my favorite subject. I have been writing and speaking about DSC since the first preview
came out in 2013, and there is no better way to capture that experience than in a book such as this.
Over last few years, IT service processes at various organizations, small and large, have been gearing up to
support the Agile development and release cycles. It is no longer about how many features a product gains with every
release cycle, but it is about how fast those features are delivered. As system administrators, developers, and DevOps
engineers, you must have been experiencing this already. There are several tools and/or frameworks developed
to support continuous delivery and configuration management in a data center. This is not a new subject, but it is
certainly an area that is still evolving. There is no standard way of achieving your goals through these frameworks.
Microsoft, with its Cloud OS vision, has been focusing on building tools that enable developers and IT
professionals alike to build and manage cloud infrastructure. One such initiative is Desired State Configuration.
DSC is a configuration standards-based management platform rather than a tool. DSC supports both Windows and
Linux platforms. By
management platform,
we mean that the Application Programming Interfaces (API) provided by
DSC can be used within any programming language, to manage configuration of devices and applications in a data
center. This book provides an example of how these interfaces are used within PowerShell. While this book focuses
on DSC with PowerShell, the concepts that you learn here can easily be leveraged in any programming or scripting
language that has support for accessing DSC API. I have included several examples in each chapter, to build a greater
understanding of the concepts. These examples do not require any special infrastructure. All that’s required is just a
couple of virtual machines.
An Overview of This Book
Windows PowerShell Desired State Configuration Revealed
is divided into three distinct parts. Each part contains
related chapters that help you to understand thoroughly the concepts that are covered.
Part I: Introduction to Windows PowerShell
Part I provides an overview of Windows PowerShell as an automation engine and scripting language. It also includes
a survey of Windows Remote Management (WinRM) and the Common Information Model (CIM).
Chapter 1: Beginning Windows PowerShell
This chapter introduces Windows PowerShell to beginners. The examples featured in this book require that you
understand PowerShell, and it is necessary that you know the key PowerShell concepts, to make good use of the
content of this book. For beginners, this chapter provides an overview that explains what PowerShell is, the need for
PowerShell, the semantics of the PowerShell scripting language, and writing scripts, functions, and modules. Readers
experienced with the key concepts of Windows PowerShell may choose to skip this chapter.
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