This chapter is from the book
This chapter is from the book
This chapter is from the book
Basic Tenets of DSC
To begin, you should understand that most DSC configuration involves using Windows PowerShell and the vendor-neutral Managed Object Format (MOF) in a declarative fashion. In programming, declarative code does not spell out exactly how the computer should complete a task. Instead, the code essentially tells the computer to “make it so” however it sees fit.
Structured Query Language (SQL) is a good example of a declarative data access language. When you run a complex SELECT statement, for instance, you leave it to the database itself to determine the system of index/row lookups it uses to satisfy the query results.
Likewise, in DSC, we start by describing how we’d like our servers to look in a standard Windows PowerShell configuration script. Take a look at Figure 18.2, and I’ll explain how DSC works step by step.
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Figure 18.2 Windows PowerShell DSC architectural overview.