LVS：略

nginx proxy 配置：

location / {
 root /data/www/wwwroot/bbs.linuxtone.com;
 proxy_redirect off ;
 proxy_set_header Host $host;
 proxy_set_header X-Real-IP $remote_addr;
 proxy_set_header REMOTE-HOST $remote_addr;
 proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
 client_max_body_size 50m;
 client_body_buffer_size 256k;
 proxy_connect_timeout 30;
 proxy_send_timeout 30;
 proxy_read_timeout 60;
 proxy_buffer_size 256k;
 proxy_buffers 4 256k;
 proxy_busy_buffers_size 256k;
 proxy_temp_file_write_size 256k;
 proxy_next_upstream error timeout invalid_header http_500 http_503 http_404;
 proxy_max_temp_file_size 128m;
 proxy_pass http://bbs.linuxtone.org;
 }

源nginx配置：

安装

HttpRealIpModule模块：

http://wiki.nginx.org/NginxChsHttpRealIpModule

--with-http_realip_module 

编译方法:

./configure --user=daemon --group=daemon --prefix=/usr/local/nginx/ 
--with-http_stub_status_module --with-http_ssl_module 
--with-http_sub_module --with-md5=/usr/lib --with-sha1=/usr/lib 
--with-http_gzip_static_module --with-http_realip_module

虚拟主机增加配置：

set_real_ip_from nginx_proxy_ip/24;

set_real_ip_from nginx_proxy_ip;

real_ip_header X-Real-IP;

EXP：

set_real_ip_from 192.168.1.0/24;

set_real_ip_from 192.168.1.6;

real_ip_header X-Real-IP;

查看二台nginx的日志就能取到真实IP了