ansible 收集远程主机的一些信息:
ansible all -m setup
应用到playbook中：
---
- name: ansible playbook
hosts: all
remote_user: root
become: yes
vars:
user_name: 'test'
var_files:
tasks:
- name: Debian
debug:
msg: 'Debian'
when:
ansible_os_family == 'Debian'
tags:
- test
测试：
ansible-playbook play.yml -t test
