A variable name can only include letters, numbers, and underscores. ![]() Not all strings are valid Ansible variable names. Variable precedence: Where should I put a variable? Transforming variables with Jinja2 filtersĭefining variables in included files and roles Referencing key:value dictionary variables Once you understand the concepts and examples on this page, read about Ansible facts, which are variables you retrieve from remote systems.ĭefining variables as key:value dictionaries The ansible-examples github repository contains many examples of using variables in Ansible. You can also create variables during a playbook run by registering the return value or values of a task as a new variable.Īfter you create variables, either by defining them in a file, passing them at the command line, or registering the return value or values of a task as a new variable, you can use those variables in module arguments, in conditional “when” statements, in templates, and in loops. You can define these variables in your playbooks, in your inventory, in re-usable files or roles, or at the command line. To represent the variations among those different systems, you can create variables with standard YAML syntax, including lists and dictionaries. With Ansible, you can execute tasks and playbooks on multiple different systems with a single command. Controlling how Ansible behaves: precedence rulesĪnsible uses variables to manage differences between systems.Virtualization and Containerization Guides.Protecting sensitive data with Ansible vault.Playbook Example: Continuous Delivery and Rolling Upgrades. ![]()
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