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Mastering Ansible
book

Mastering Ansible

by Jesse Keating
November 2015
Intermediate to advanced content levelIntermediate to advanced
236 pages
4h 42m
English
Packt Publishing
Content preview from Mastering Ansible

Variable precedence

As you learned in the previous section, there are a few major types of variables that can be defined in a myriad of locations. This leads to a very important question, what happens when the same variable name is used in multiple locations? Ansible has a precedence for loading variable data, and thus it has an order and a definition to decide which variable will "win". Variable value overriding is an advanced usage of Ansible, so it is important to fully understand the semantics before attempting such a scenario.

Precedence order

Ansible defines the precedence order as follows:

  1. Extra vars (from command line) always win
  2. Connection variables defined in inventory
  3. Most everything else
  4. Rest of the variables defined in inventory
  5. Facts discovered ...
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Publisher Resources

ISBN: 9781784395483Supplemental Content