apache1 apache2

vim /etc/httpd/conf.d/www.conf
<VirtualHost *:81>   
    DocumentRoot /var/www/html/www
    ServerName www.wkphp.com
    <Directory "/var/www/html/www">
        Options Indexes FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>
<VirtualHost *:82>
     DocumentRoot /var/www/html/www
    ServerName www.wkhttp.com
   <Directory "/var/www/html/www">
        Options Indexes FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
    </VirtualHost>
<VirtualHost *:83>
    DocumentRoot /var/www/html/123
    ServerName www123php.com
    <Directory "/var/www/html/123">
        Options Indexes FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>
<VirtualHost *:84>
     DocumentRoot /var/www/html/123
    ServerName www.123http.com
    <Directory "/var/www/html/123">
        Options Indexes FollowSymLinks
        AllowOverride All
        Order allow,deny
        Allow from all
    </Directory>
</VirtualHost>
listen 81
listen 82
listen 83
listen 84
 

將web虛擬主機指定到不同的埠，再有nginx指定不同的域名來進行負載
vim nginx.conf 在http節點中新增

upstream www.wkphp.com {
    server 192.168.3.3:81 weight=1;
    server 192.168.3.4:81 weight=1;
}
    server {
         listen 80;
         server_name www.wkphp.com;
         location / {
             proxy_pass http://www.wkphp.com/;
             index index.html index.htm index.php;
             proxy_redirect off;
             proxy_set_header Host $host;
             proxy_set_header X-Real-IP $remote_addr;
             proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         }
     }
upstream www.wkhttp.com {
     server 192.168.3.3:82 weight=1;
     server 192.168.3.4:82 weight=1;
}
    server {
        listen 80;
        server_name www.wkhttp.com;
        location / {
            proxy_pass http://www.wkhttp.com/;
            index index.html index.htm;
            proxy_redirect off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         }              
    }
upstream www.123php.com {
    server 192.168.3.3:83 weight=1;
    server 192.168.3.4:83 weight=1;
    }
    server {
         listen 80;
          server_name www.123php.com;
          location / {
          proxy_pass http://www.123php.com/;
          index index.html index.htm;
          proxy_redirect off;
          proxy_set_header Host $host;
          proxy_set_header X-Real-IP $remote_addr;
          proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      }
           }
upstream www.123http.com {
    server 192.168.3.3:84 weight=1;
    server 192.168.3.4:84 weight=1;
}
    server {
        listen 80;
        server_name www.123http.com;
         location / {
              proxy_pass http://www.123http.com/;
              index index.html index.htm;
              proxy_redirect off;
              proxy_set_header Host $host;
              proxy_set_header X-Real-IP $remote_addr;
              proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
         }
     }
 

重點解讀1 proxy_pass http://www.123php.com/; 此時的www.123php.com的名稱和servername保持一致，並且和upstream www.123http.com 的名稱要保持一致
重點解讀2 proxy_redirect off;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
帶上host header