何謂reverse proxy？就是反向代理，網站的訪客越多越有有效果，省去90%的apache process，等於也節省了相當多的資源，若是reverse proxy再加上cache的功能，那麼網站的速度真的會大幅度提升
由於大家都只對revere proxy連線，實際存取apache的就只有reverse proxy而已，若是不透過reverse proxy，apache的log可以清楚的紀錄每一個連線的ip，但是透過了reverse proxy之後，所有瀏覽紀錄會變成只剩下一個..雖然說reverse proxy也可以留下紀錄，但是遇到有問題要比對時就相當麻煩了，所以還是希望apache可以記錄到原始的ip。
這時候可以安裝mod_rpaf的模組，來達到透過reverse proxy也可以得到真實ip的功能～～
1. Retrieve and Extract mod_rpaf packages:
2. Build and install mod_rpaf
引用:
# apxs -i -c -n mod_rpaf-2.0.so mod_rpaf-2.0.c
3. Add mod_rpaf to Apache configuration
引用:
# vi /etc/httpd/conf/httpd.conf- Find the “LoadModule” list (near the top)
- Add the following lines at the bottom of the “LoadModule” list:
LoadModule rpaf_module modules/mod_rpaf-2.0.so
# mod_rpaf Configuration
RPAFenable On
RPAFsethostname On
RPAFproxy_ips 127.0.0.1 10.0.0.1
RPAFheader X-Forwarded-For
Where “127.0.0.1 10.0.0.1″ is, add your proxy server IP address(es).
This will ensure that mod_rpaf checks for the X-Forwarded-For header
from these hosts only.
4. Finish
Restart Apache for the changes to take effect
#service httpd restart
5. Troubleshooting
The following dependencies may need to be installed before installing mod_rpaf:
httpd-devel, gcc
They can be installed using the following commands:
引用:
#yum install httpd-devel gcc
這樣就可以囉～～
