- hosts: 
  - del-master
  vars_prompt:
    name: "restore_confirmation"
    prompt: "确认要移除 master 节点? 输入“yes”确认移除。"
    default: "no"
    private: no
  pre_tasks:
    - name: 移除确认
      fail:
        msg: "移除确认失败，取消移除 master 节点操作。"
      when: restore_confirmation != "yes"
  roles:
  - prepare/variables
  - remove/master