- hosts: all
  remote_user: root
  tasks:
    - apt: name=cobbler state=installed
      environment:
        http_proxy: http://proxy.example.com:8080
environment 也可以被存储在变量中,像如下方式访问:
- hosts: all
  remote_user: root
  # here we make a variable named "proxy_env" that is a dictionary
  vars:
    proxy_env:
      http_proxy: http://proxy.example.com:8080
  tasks:
    - apt: name=cobbler state=installed
      environment: proxy_env
虽然上面只展示了 proxy 设置,但其实可以同时其实支持多个设置. 大部分合合乎逻辑的地方来定义一个环境变量都可以成为 group_vars 文件,示例如下:
# file: group_vars/boston
ntp_server: ntp.bos.example.com
backup: bak.bos.example.com
proxy_env:
  http_proxy: http://proxy.bos.example.com:8080
  https_proxy: http://proxy.bos.example.com:8080
See also
Playbooks
An introduction to playbooks
User Mailing List
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irc.freenode.net
#ansible IRC chat channel
          Revision 2d77a9f8.