Ansible variable names should start with letters. Variable can contain letters, numbers, and underscores.
Types of Ansible variables
- Default Variables
- Inventory Variables
- Facts and Local Facts
- Registered Variables
Default Variables are variables defined by the ansible. Ansible provides the following default variables,
- inventory_hostname
- inventory_hostname_short
- groups, and groups.key (keys of the group dictionary)
Note: Host variables have higher priority than group variables.