nginx负载均衡

  upstream backend{
 　　　　#weight为权重，不设置默认为轮询
        server 192.168.98.92:8081 weight=5;
        server 192.168.98.100:8081  weight=5;
        server 192.168.98.98:8081  weight=1;
   } 

server{
　　listen 80;
　　server_name cx.com;
　　index index.html index.php;
　　location / {
　　　　proxy_pass http://backend;
　　　　proxy_set_header Host $host;
　　}
}