nginx代理节点

http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;
	upstream backend {
		#ip_hash;
		server 192.168.1.113;
		server 192.168.1.114;
	}
    server {
        listen       80;
        server_name   localhost ;
        charset utf-8;
        root   /data/www/default;
        location / {
			proxy_set_header Host $host;
			proxy_set_header X-Real-IP $remote_addr;
			proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
			proxy_pass http://backend;
        }
		access_log  /data/log/default.access.log;
		error_log   /data/log/default.error.log;

    }
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    log_format  mylog  '$http_x_forwarded_for  ----- $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent"';
    #access_log  logs/access.log  mylog;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    #gzip  on;

    server {
        listen       80;
        server_name   localhost ;
        charset utf-8;
        root   /data/www/default;
		location / { 
            index  index.html index.htm index.php;
            autoindex  off;
        }
        location  ~ .+\.php($|/)   {
            fastcgi_index index.php;
            fastcgi_pass 127.0.0.1:9000;
            include      fastcgi_params;
            set $path_info "";
			set $real_script_name $fastcgi_script_name;
            if ($fastcgi_script_name ~ "^(.+?\.php)(/.+)$") {
                set $real_script_name $1;
                set $path_info $2;
            }
            fastcgi_param SCRIPT_FILENAME $document_root$real_script_name;
            fastcgi_param SCRIPT_NAME $real_script_name;
            fastcgi_param PATH_INFO $path_info;

        }
		set_real_ip_from 192.168.1.110;
        real_ip_header X-Real-IP;
		access_log  /data/log/default.access.log mylog;
		error_log   /data/log/default.error.log;

    }
}

set_real_ip_from 192.168.1.110;
real_ip_header X-Real-IP;

主要是为了获取客户端的真实IP地址