#role应用

#roles跟调用角色的剧本文件应该与roles同级关系,即放在ansible目录下

#makir /root/ansible/roles/{nginx,http,ftp,mysql,redis}

palybook.yml

roles/

    project/

        tasks/   定义task，role的基本元素，至少包含一个main.yml文件

        files/   存放由copy或script模块等调用的文件

        vars/     定义变量文件

        templates/  template模块查找所需要末班文件的目录

        handlers/

        default/  设定默认变量

#以nginx为例

思路：

1.group:创建用户组nginx

2.user:创建用户nginx

3.yum:安装nginx

4.template:配置文件更新nginx.conf

5.service:启动nginx

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cd /root/ansible/roles/nginx

mkdir tasks templates

cd task

touch group.yml

- name: create group nginx

    group: name=nginx gid=80

touch user.yml

-name: create user nginx

    user: name=nginx uid=80 group=nginx system=yes shell=/sbi/nologin

touch install.yml

- name: install package

    yum: name=nginx

touch start.yml

- name: start service

    service: name=nginx state=started enabled=yes

touch restart.yml

- name: restart service

    service: name=nginx state=restarted

touch templ.yml

- name: copy conf

    template: src=nginx.conf.j2 dest=/etc/nginx/conf/nginx.conf

touch main.yml

- include: group.yml

- include: user.yml

- include: install.yml

- include: templ.yml

- include: start.yml

cd ../templates  && ll

nginx.conf.j2

cd /root/ansible

touch nginx_role.yml

- hosts: websrvs

  remote_user: root

  roles:

    - role: nginx

执行命令：ansible-playbook nginx_role.yml