May 22, 2014 01:19
diff --git a/inv b/inv
 localhost
diff --git a/result b/result
 $ ansible-playbook site.yml -i inv

 PLAY [all] ********************************************************************

 GATHERING FACTS ***************************************************************
 ok: [localhost]
 localhost: importing /Users/.../vars_Darwin.yml

 TASK: [show vars] *************************************************************
 ok: [localhost] => {
    "msg": "test_var=b"
 }

 PLAY RECAP ********************************************************************
 localhost                  : ok=2    changed=0    unreachable=0    failed=0
diff --git a/site.yml b/site.yml
 - hosts: all
  vars_files:
    - [ 'vars_{{ansible_os_family}}.yml', 'vars_b.yml' ]
  tasks:
  - name: show var
    action: debug msg="test_var={{test_var}}"

diff --git a/vars_b.yml b/vars_b.yml
 ---
 test_var: 'b'
diff --git a/vars_Darwin.yml b/vars_Darwin.yml
 ---
 test_var: 'Darwin'
	$ ansible-playbook site.yml -i inv

	PLAY [all] ********************************************************************

	GATHERING FACTS ***************************************************************
	ok: [localhost]
	localhost: importing /Users/.../vars_Darwin.yml

	TASK: [show vars] *************************************************************
	ok: [localhost] => {
	"msg": "test_var=b"
	}

	PLAY RECAP ********************************************************************
	localhost : ok=2 changed=0 unreachable=0 failed=0
	- hosts: all
	vars_files:
	- [ 'vars_{{ansible_os_family}}.yml', 'vars_b.yml' ]
	tasks:
	- name: show var
	action: debug msg="test_var={{test_var}}"