一、环境如下：
IP地址: 59.111.33.22
域名1 example1.com 放在 /www/example1
域名2 example2.com 放在 /www/example2

二、基本思路和步骤如下：
把2个站点 example1.com, example2.com 放到 nginx 可以访问的目录 /www/
给每个站点分别创建一个 nginx 配置文件 example1.com.conf，example2.com.conf, 并把配置文件放到 /etc/nginx/vhosts/
然后在 /etc/nginx.conf 里面加一句 include 把步骤2创建的配置文件全部包含进来（用 * 号）
重启 nginx

在开始具体的配置之前，有兴趣的朋友，可以参考下之前为大家介绍过的一篇文章：nginx配置多站点的实例代码 。

三、具体配置过程：

1、在 /etc/nginx 下创建 vhosts 目录

mkdir /etc/nginx/vhosts

2、在 /etc/nginx/vhosts/ 里创建文件 example1.com.conf，内容如下：  

server {
        listen  80;
        server_name  example1.com www. example1.com;

        access_log  /www/access_ example1.log  main;

        location / {
            root   /www/example1.com;
            index  index.php index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }

       # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        location ~ \.php$ {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /www/example1.com/$fastcgi_script_name;
            include        fastcgi_params;
        }

        location ~ /\.ht {
            deny  all;
        }
}

3、在 /etc/nginx/vhosts/ 里创建文件 example2.com.conf，内容如下：  

server {
        listen  80;
        server_name  example2.com www. example2.com;

        access_log  /www/access_ example1.log  main;

        location / {
            root   /www/example2.com;
            index  index.php index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   /usr/share/nginx/html;
        }

       # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        location ~ \.php$ {
            fastcgi_pass   127.0.0.1:9000;
            fastcgi_index  index.php;
            fastcgi_param  SCRIPT_FILENAME  /www/example2.com/$fastcgi_script_name;
            include        fastcgi_params;
        }

        location ~ /\.ht {
            deny  all;
        }
}

4、打开 /etc/nginix.conf 文件，在相应位置include进来以上的二个文件。  

user  nginx;
worker_processes  1;

# main server error log
error_log /var/log/nginx/error.log ;
pid /var/run/nginx.pid;

events {
 worker_connections  1024;
}

# main server config
# by http://www.jbxue.com
http {
 include       mime.types;
 default_type  application/octet-stream;
 log_format  main  '$remote_addr - $remote_user [$time_local] $request '
                      '"$status" $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

 sendfile        on;
 #tcp_nopush     on;
     #keepalive_timeout  0;
 keepalive_timeout  65;
 gzip  on;

 server {
         listen         80;
         server_name     _;
         access_log      /var/log/nginx/access.log main;
         server_name_in_redirect  off;
         location / {
              root  /usr/share/nginx/html;
              index index.html;
         }
 }

# 包含所有的虚拟主机的配置文件
include /usr/local/etc/nginx/vhosts/*;
}

5、重启 Nginx  

/etc/init.d/nginx restart

搞定，开始测试吧。