ansible/test/alias_playbook.yml

---
- hosts: aliasgroup
  vars:
    test_file: /tmp/ansible-alias-test
  tasks:
  - action: command creates=$test_file touch $test_file
  - action: command creates=$test_file false
  - local_action: command true
  - action: command removes=$test_file rm -f $test_file

- hosts: all
  gather_facts: False
  tasks:
  - action: command true
    delegate_to: alias-node.example.com
  - action: command true