- name: Shutdown remote servers
  hosts: all  # 或者指定特定的主机组
  become: yes  # 提升权限为root用户
  tasks:
    - name: Shutdown the server
      command: /sbin/shutdown -h now
      async: 1
      poll: 0
      ignore_errors: true  # 忽略错误以防止连接中断后任务失败