Nagios Support Forum

While normally I wouldn't suggest such drastic measures, I can't say I would suggest against it. It seems like your either missing some php packages or the php files from our install got corrupted somehow. Before you wipe it out, could you run:

rpm -qa | grep php

[root@nagios etc]# rpm -qa |grep php
php-5.1.6-39.el5_8
php-mysql-5.1.6-39.el5_8
php-pear-1.4.9-8.el5
php-mssql-5.1.6-5.el5
php-gd-5.1.6-39.el5_8
php-devel-5.1.6-39.el5_8
php-pear-HTML-Template-IT-1.3.0-2.el5
php-pdo-5.1.6-39.el5_8
php-snmp-5.1.6-39.el5_8
php-mcrypt-5.1.6-5.el5
php-cli-5.1.6-39.el5_8
php-xml-5.1.6-39.el5_8
php-common-5.1.6-39.el5_8
php-pgsql-5.1.6-39.el5_8

What packages are updatable?

[root@nagios ~]# yum list update |grep php
Error: No matching Packages to list
[root@nagios ~]#

Hmmm. What distro and version are you running?

[root@nagios ~]# uname -a
Linux nagios 2.6.18-348.6.1.el5 #1 SMP Fri Apr 26 09:21:26 EDT 2013 x86_64 x86_64 x86_64 GNU/Linux
[root@nagios ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.9 (Tikanga)

Alright. You are missing a few php packages: Install these with:

Okay, they've been installed. Restarted nagios and still doesn't work.

You may have to restart httpd as well: Are you getting the same errors?

[root@nagios ~]# service httpd restart
Stopping httpd: [ OK ]
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName
[ OK ]
[root@nagios ~]# vi /etc/host
[root@nagios ~]# tail -25 /var/log/httpd/error_log
[Wed Jun 26 11:26:34 2013] [error] [client 198.201.85.78] PHP Warning: Invalid argument supplied for foreach() in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 2221, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 15:11:25 2013] [error] [client 198.201.85.78] File does not exist: /usr/local/nagiosxi/html/includes/js/jquery/colorpicker/images/colorpicker_overlay.png, referer: http://198.201.85.38/nagiosxi/includes/ ... picker.css
[Wed Jun 26 17:15:10 2013] [notice] caught SIGTERM, shutting down
[Wed Jun 26 17:18:28 2013] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Jun 26 17:18:28 2013] [notice] Digest: generating secret for digest authentication ...
[Wed Jun 26 17:18:28 2013] [notice] Digest: done
[Wed Jun 26 17:18:29 2013] [notice] Apache/2.2.3 (Red Hat) configured -- resuming normal operations
[Wed Jun 26 17:23:14 2013] [error] [client 198.201.85.78] PHP Notice: Undefined index: passback_data in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 321, referer: http://198.201.85.38/nagiosxi//config/m ... e&show=all
[Wed Jun 26 17:23:16 2013] [error] [client 198.201.85.78] PHP Notice: Undefined index: passback_data in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 453, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:23:18 2013] [error] [client 198.201.85.78] PHP Notice: Undefined index: passback_data in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 668, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:23:18 2013] [error] [client 198.201.85.78] PHP Notice: Undefined index: nagios_objects in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 1996, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:23:18 2013] [error] [client 198.201.85.78] PHP Warning: Invalid argument supplied for foreach() in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 2004, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:23:18 2013] [error] [client 198.201.85.78] PHP Warning: Invalid argument supplied for foreach() in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 2518, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:23:18 2013] [error] [client 198.201.85.78] PHP Warning: Invalid argument supplied for foreach() in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 2161, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:23:18 2013] [error] [client 198.201.85.78] PHP Warning: Invalid argument supplied for foreach() in /usr/local/nagiosxi/html/config/monitoringwizard.php on line 2221, referer: http://198.201.85.38/nagiosxi//config/m ... wizard.php
[Wed Jun 26 17:48:21 2013] [notice] caught SIGTERM, shutting down
[Wed Jun 26 17:48:21 2013] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Jun 26 17:48:21 2013] [notice] Digest: generating secret for digest authentication ...
[Wed Jun 26 17:48:21 2013] [notice] Digest: done
[Wed Jun 26 17:48:21 2013] [notice] Apache/2.2.3 (Red Hat) configured -- resuming normal operations
[Wed Jun 26 17:48:52 2013] [notice] caught SIGTERM, shutting down
[Wed Jun 26 17:48:53 2013] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Wed Jun 26 17:48:53 2013] [notice] Digest: generating secret for digest authentication ...
[Wed Jun 26 17:48:53 2013] [notice] Digest: done
[Wed Jun 26 17:48:53 2013] [notice] Apache/2.2.3 (Red Hat) configured -- resuming normal operations