How to Configure Apache to log request body data

To configure Apache to log request body data on a vhost, you need to perform the following steps:

1. Enable the mod_log_config module by running the following command:

sudo a2enmod log_config

2. In the Apache configuration file for your vhost, locate the CustomLog directive and add the %{requestbody} variable to it. For example:

bash
CustomLog /var/log/apache2/access.log combined %{requestbody}

This will log the request body data in the access log file.

Note: The %{requestbody} variable is only available if you are using Apache version 2.4.18 or later, and if the mod_dumpio module is enabled.

3. If the mod_dumpio module is not enabled, you can enable it by running the following command:

sudo a2enmod dump_io

4. Restart Apache to apply the changes:

sudo systemctl restart apache2

After completing these steps, Apache will log the request body data in the access log file for your vhost. Keep in mind that logging request body data can consume a significant amount of disk space and should only be done if necessary.