本节列举了写第一个Playbook，你必须了解基本语法。
随着你面临的机器越多，配置的需求越复杂，你可能需要了解后面介绍的一些稍微复杂逻辑的语句。
$ ansible-playbook deploy.yml
查看输出的细节
ansible-playbook playbook.yml --verbose
查看该脚本影响哪些hosts
ansible-playbook playbook.yml --list-hosts
并行执行脚本
ansible-playbook playbook.yml -f 10
最基本的playbook脚本分为三个部分:
deploy.yml文件
---
- hosts: webservers
vars:
http_port: 80
max_clients: 200
user: root
tasks:
- name: ensure apache is at the latest version
yum: pkg=httpd state=latest
- name: write the apache config file
template: src=/srv/httpd.j2 dest=/etc/httpd.conf
notify:
- restart apache
- name: ensure apache is running
service: name=httpd state=started
handlers:
- name: restart apache
service: name=httpd state=restarted