Book Image

Mastering SaltStack

By : Joseph Hall
Book Image

Mastering SaltStack

By: Joseph Hall

Overview of this book

Table of Contents (19 chapters)
Mastering SaltStack
Credits
Foreword
About the Author
About the Reviewers
www.PacktPub.com
Preface
Index

Templates and variables


When we're talking about the balance between generic and explicit, we'd better talk about variable names. A good variable name will also strike this balance and become an emulsifier between the Minion and the State tree.

Nested variables

Salt allows hierarchical data structures to be used in order to define variables. In a way, this allows variables to behave like directories, in which these structures may be either shallow or deep.

However, unlike directory structures, searching through deep variable structures is not necessarily as painful. When you use flat files to define a structure, it may actually be easier to read a structure that is deeply nested. Let's turn the ingredients for a chocolate chip cookie recipe into a set of Salt Grains, as follows:

cookies:
  fats:
    - butter
  sugars:
    - granulated sugar
    - light brown sugar
  wet_ingredients:
    - eggs
    - vanilla extract
  dry_ingredients:
    - flour
    - baking soda
    - baking powder
    - salt...