For those doing manual installations, some of the tools embedded in Nagios XI use the PHP short tags feature, which is not necessarily enabled on all web servers by default. This results in the errors "HTTP 500 Error"/"PHP Parse error - Unexpected $end".
To fix this issue, locate your php.ini file (located at /etc/php.ini for CentOS installations), and verify that "short_open_tag" is set to "on." We intend to use full tags for future version, but some components and addons may still use them, so we recommend leaving this setting to "on."
For any support related questions please visit the Nagios Support Forums at:
Article ID: 153
Created On: Mon, Jan 25, 2016 at 11:54 PM
Last Updated On: Mon, Feb 22, 2016 at 7:35 PM
Authored by: tlea
Online URL: https://support.nagios.com/kb/article/nagios-xi-http-500-error-php-parse-error-unexpected-$end-153.html