一、通过playbook安装与设置zookeeper

---                                       #必须字段，类同于#/bin/bash
- hosts: test                        #远程操作主机
  remote_user: cedar          #远程操作用户
  become: yes                    #是否sudo 
  tasks:
    - name: "安装zookeeper"                                                      #任务命名
      command: yum -y install mesosphere-zookeeper              #远程执行命令安装zook
    - name: "启动zookeeper"                                   #任务命名
      service:                                                             #service模块
        name: zookeeper                                           #服务名zookeeper
        state: started                                                  #动作started
    - name: "设置开机启动"                                     #任务命名
      service:                                                            #service模块
        name: zookeeper                                           #服务名zookeeper
        enabled: yes                                                  #enabled参数为YES开机启动