Nginx根据IP将请求分配到不同的后端服务器

server {
	listen       3333;
	server_name  localhost;
	
	large_client_header_buffers 4 16k;
	client_max_body_size 300m;
	client_body_buffer_size 128k;
	proxy_connect_timeout 600;
	proxy_read_timeout 600;
	proxy_send_timeout 600;
	proxy_buffer_size 64k;
	proxy_buffers   4 32k;
	proxy_busy_buffers_size 64k;
	proxy_temp_file_write_size 64k;

	location / {
		root   html;
		index  index.html index.htm;
	}
	
	location /project {
		proxy_set_header   Host    $host:$server_port;
		proxy_set_header   X-Real-IP   $remote_addr; 
		proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
		client_max_body_size    10m;
		if ($remote_addr ~ "100.200.10.6")
		{
		proxy_pass http://project1.serverpool.com;
		break;
		}
		proxy_pass http://project2.serverpool.com;
	}
	
	error_page   502  /502.html;
	location = /502.html {
		root   html;
	}
}