Problem Description
Nagios XI 2012 and late versions of 2011 set up apache to be able to utilize the Ajaxterm subcomponent.
This component requires a modification to the /etc/httpd/conf.d/ssl.conf file, and adds some proxy information needed specifically for ajaxterm.
If apache failed to restart after making these modifications, the previous configuration gets rolled back in order to keep apache running the the system usable.
Resolving The Problem
The bad configuration that the fullinstall/upgrade script attempted to apply is saved to /etc/httpd/conf.d/ajaxterm.fail.
This file can be debugged and once fixed, can replace the existing ssl.conf file in order to utilize Ajaxterm.
Note: Remove the /etc/httpd/conf.d/ajaxterm.fail file once the issue is resolved to avoid the error message in the UI.
Final Thoughts
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