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[ansible] Where can I get a list of Ansible pre-defined variables?

There are 3 sources of variables in Ansible:

  1. Variables gathered from facts. You can get them by running command: ansible -m setup hostname

  2. Built-in (pre-defined) Ansible variables (AKA 'magic' variables). They are documented in Ansible documentation: http://docs.ansible.com/playbooks_variables.html#magic-variables-and-how-to-access-information-about-other-hosts
    Here is the list extracted from Ansible 1.9 documentation:

    • group_names
    • groups
    • inventory_hostname
    • ansible_hostname
    • inventory_hostname_short
    • play_hosts
    • delegate_to
    • inventory_dir
    • inventory_file
  3. Variables passed to ansible via command line. But obviously you know what they are

Examples related to ansible

• Specifying ssh key in ansible playbook file • Ansible: how to get output to display • How to do multiline shell script in Ansible • Accessing inventory host variable in Ansible playbook • Ansible: get current target host's IP address • Ansible Ignore errors in tasks and fail at end of the playbook if any tasks had errors • Ansible: How to delete files and folders inside a directory? • How to pass a user / password in ansible command • How to test that a registered variable is not empty? • Copy multiple files with Ansible

Examples related to ansible-facts

• Ansible: get current target host's IP address • Where can I get a list of Ansible pre-defined variables?