Nginx 负载均衡

upstream webservers {  
      ip_hash;  
      server 192.168.1.201 weight=1 max_fails=2 fail_timeout=2;  
      server 192.168.1.202 weight=1 max_fails=2 fail_timeout=2;  
      # server 127.0.0.1:80 backup;     //2 台主机都不能访问就访问本机   
  }  
  server {  
      listen       80;  
      server_name  localhost;  
      #access_log  logs/host.access.log  main;  
      location / {  
              proxy_pass      http://webservers;  
              proxy_set_header  X-Real-IP  $remote_addr;  
      }  
}