nginx负载均衡的配置方法

upstream www.***.com {
server 192.168.2.72:80;
server 192.168.2.4:80;
server 192.168.2.5:80;
}
server {
listen    80;
server_name  www.***.com;

#charset koi8-r;

#access_log  logs/host.access.log  main;

location / {
proxy_pass http://www.***.com; proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}