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;
         }
     }