Apache can log all POST data for troubleshooting purposes. I’ll show you how to set this up!
First you will need to enabled mod_dumpio.
On Ubuntu / Debian enable the module:
$ sudo a2enmod dump_io
Then add the following and restart apache:
$ sudo nano /etc/apache2/apache2.conf
LogLevel debug DumpIOInput On DumpIOOutput On DumpIOLogLevel debug # optional - Apache 2.2.4 or later only
Red Hat / CentOS:
$ sudo nano /etc/httpd/conf/httpd.conf
Add the following:
LoadModule dumpio_module modules/mod_dumpio.so LogLevel debug DumpIOInput On DumpIOOutput On DumpIOLogLevel debug # optional - Apache 2.2.4 or later only
The POST data is then logged to the error_log for Apache. /var/log/httpd/error_log (Red Hat) or /var/log/apache2/error.log (Debian).
Be careful as logs will grow to be very huge in size! Only use this to debug special case scenarios.
