（4）playbook

Playbook syntax: pay attention to spaces, not the tab key

1) Example 1: Install apache

#vim apache.yml 
- hosts: 192.168.1.31
  tasks:
  - name: Install Apache Package
    yum: name=httpd state=latest

  - name: Copy Apache Conf
    copy: src=/tmp/httpd.conf dest=/etc/httpd/conf/httpd.conf
    notify: Restart Apache Service

  - name: Start Apache
    service: name=httpd state=started enabled=yes

  handlers:
  - name: Restart Apache Service
    service: name=httpd state=restarted

说明：
目标主机是:192.168.1.31
安装httpd，把本地/tmp/httpd.conf文件拷贝到目标主机指定目录
启动httpd和开机启动
handlers：处理方式（重启httpd）
notify动作：当copy文件改变的时候，会触发处理方式handlers（重启httpd）

ansible-playbook apache.yml --syntax-check              //检测语法
ansible-playbook apache.yml                                        //执行playbook文件