Book Image

Learning PowerShell DSC - Second Edition

By : James Pogran
Book Image

Learning PowerShell DSC - Second Edition

By: James Pogran

Overview of this book

The main goal of this book is to teach you to configure, deploy, and manage your system using the new features of PowerShell v5/v6 DSC. This book begins with the basics of PowerShell Desired State Configuration, covering its architecture and components. It familiarizes you with the set of Windows PowerShell language extensions and new Windows PowerShell commands that make up DSC. Then it helps you create DSC custom resources and work with DSC configurations with the help of practical examples. Finally, it describes how to deploy configuration data using PowerShell DSC. Throughout this book, we will be focusing on concepts such as building configurations with parameters, the local configuration manager, and testing and restoring configurations using PowerShell DSC. By the end of the book, you will be able to deploy a real-world application end-to-end and will be familiar enough with the powerful Desired State Configuration platform to achieve continuous delivery and efficiently and easily manage and deploy data for systems.
Table of Contents (9 chapters)

Configuration data

Now that we have covered how deployments work (push and pull) in DSC and covered the workflow (authoring, staging, and execution) for using DSC, we will pause here for a moment to discuss the differences between configuration files and configuration data.

It is important to understand the concept of the separation of the what from the where that we covered in Chapter 1, Introducing PowerShell DSC, when considering how to deploy servers, applications, and environments using DSC.

The DSC configuration blocks contain the entirety of the expected state of the target node. The DSL syntax used to describe the state is expressed in one configuration file in almost a grocery list format. It expresses all configuration points of the target system and is able to express dependencies between configuration points.

DSC configuration data is separated from DSC configuration...