Nginx入门（二）——双机热备

 upstream backend {

         server 192.168.1.247:;

         server 192.168.1.247: backup;

     }

     server {

         listen       ;

         server_name  localhost;

         #charset koi8-r;

         #access_log  logs/host.access.log  main;

         location / {

             root   html;

             index  index.html index.htm;

         proxy_pass   http://backend;

         }

     }