playbook 之 vars

支持 字典格式、列表格式。定义和引用完全兼容python格式

{"ip": "127.0.0.1","port": "8000"}
[{"ip": "127.0.0.1"},{"port": "8000"}]
["bind":{"ip": "127.0.0.1"},{"port": "8000"}]

示例1：

- hosts: 127.0.0.1
  vars:
    ip: 127.0.0.1
    port: 8000
  tasks:
  - name: debug
    debug:
      msg: http://{{ ip }}:{{ port }}

示例2：

- hosts: 127.0.0.1
  vars:
  - ip: 127.0.0.1
  - port: 8000
  tasks:
  - name: debug
    debug:
      msg: http://{{ ip }}:{{ port }}

示例3：

- hosts: 127.0.0.1
  vars:
  - bind:
      ip: 127.0.0.1
      port: 8000
  tasks:
  - name: debug
    debug:
      msg: http://{{ bind.ip }}:{{ bind.port }}