Home » Categories » Products » Nagios XI » Troubleshooting » Common Problems

Nagios XI - HTTP 500 Error / PHP Parse error - Unexpected $end

Problem Description

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".


Resolving The Problem

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."


Final Thoughts

For any support related questions please visit the Nagios Support Forums at:


0 (0)
Article Rating (No Votes)
Rate this article
  • Icon PDFExport to PDF
  • Icon MS-WordExport to MS Word
Attachments Attachments
There are no attachments for this article.
Related Articles RSS Feed
Nagios XI - Host Still Visible After Deletion (Ghost Hosts)
Viewed 991 times since Tue, Jan 27, 2015
Nagios XI - Scheduled Downtime Not Working
Viewed 512 times since Mon, Oct 10, 2016
Nagios XI - How To Delete A Data Source From An RRD File
Viewed 787 times since Wed, Apr 27, 2016
Nagios XI - Schedulded Backups No Longer Working
Viewed 555 times since Fri, Jun 3, 2016
Nagios XI - Missing localhost Alerts
Viewed 804 times since Sun, Nov 5, 2017
XI 5.4 monitoring engine not running
Viewed 807 times since Mon, Feb 6, 2017
Nagios XI - NSP: Sorry Dave, I can’t let you do that
Viewed 2308 times since Tue, Jan 27, 2015
Nagios XI - Installing XI Fails To Install Dependency pymssql
Viewed 542 times since Mon, Oct 17, 2016
Nagios XI - Scheduled Backup Log Level
Viewed 398 times since Tue, Apr 18, 2017
CCM says unapplied changes exist, but none listed
Viewed 354 times since Mon, Feb 27, 2017