1、初始化一个role
[root@bogon ~]# ansible-galaxy init /etc/ansible/roles/websrvs
查看已经创建的role
[root@bogon ~]# ls /etc/ansible/roles/
webservs
2、配置role
把初始化后 role里面没用的删除，只留下面四个目录
[root@bogon ~]# cd /etc/ansible/roles/webservs/
[root@bogon webservs]# ls
handlers README.md tasks templates vars
[root@bogon webservs]# ls templates/
index.html.j2 nginx.conf.j2
配置变量vars
[root@bogon webservs]# cat vars/main.yml
---
# vars file for /etc/ansible/roles/webservs
worker_processes: 4
worker_connections: 768
max_open_files: 65506
tasks 文件内容
[root@bogon webservs]# cat tasks/main.yml
---
# tasks file for /etc/ansible/roles/webservs
- name: install nginx
command: yum install nginx -y
- name: copy nginx config file
template: src=nginx.conf.j2 dest=/etc/nginx/nginx.conf
notify: restart nginx
- name: copy index.html
template:
src: index.html.j2
dest: /usr/share/nginx/www/index.html
mode: 0644
notify: restart nginx
- name: see file
command: ls /root
notify: restart nginx
handlers 文件内容：
[root@bogon webservs]# cat handlers/main.yml
---
# handlers file for /etc/ansible/roles/webservs
- name: restart nginx
service: name=nginx state=restarted
模板文化内容：
[root@bogon webservs]# cat templates/nginx.conf.j2
worker_processes {{ worker_processes }};
worker_rlimit_nofile {{ max_open_files }};
events {
worker_connections {{ worker_connections }};
}
http {
server {
listen 80;
root /usr/share/nginx/www;
index index.html index.htm default.html index.php;
server_name loclhost;
location / {
try_files / =404;
}
}
}
[root@bogon webservs]# cat templates/index.html.j2
<html>
<head>
<title>welcome to american</title>
</head>
<body>
<h1>nginx, confitured by ansible</h1>
<p>if you can see this, ansible successfully installed nginx.</p>
<p>{{ ansible_hostname }}</p>
</body>
</html>
3、配置playbook，把role添加进来
[root@bogon ~]# cat nginx_role.yaml
---
- hosts: webservers
become: yes
become_method: sudo
roles:
- role: webservs
4、开始执行Playbook
[root@bogon ~]# ansible-playbook nginx_role.yaml
