How do i get Ansible predefined variables

Question

I'm trying to get ansible pre definied variables but I dont know how to get it. A little help would be good. Thank you..

Answer 1

There three types of variables

• variables gathered from the facts which can be extracted using the following command:

ansible -m setup hostname

• pre-defined variables, you can use this playbook for it

---
# vars.yml
# Shows the value of all variables/facts.
# Example:
#   ansible-playbook vars.yml -e 'hosts=localhost'
- hosts: localhost
  tasks:
    - fail: "You must specify a value for `hosts` variable - e.g.: ansible-playbook vars.yml -e 'hosts=localhost'"
      when: hosts is not defined

- hosts: "{{ hosts }}"
  tasks:
    - debug: var=vars
    - debug: var=hostvars[inventory_hostname]

• Variables passed through command lines which will obviously be known to you.