如下，with_items 是循环的对象，with_items 是 python list 数据结构，task 会循环读取 list 里面的值，key 的名称是 item
[root@localhost ~]$ cat while.yml
---
- hosts: 192.168.119.134
user: root
tasks:
- name: touch file
file: path=/tmp/{{ item }} state=touch mode=600
with_items:
- 1.txt
- 2.txt
- 3.txt