My system is Nagios XI 2014R1.5. After the upgrade to this version I have noticed that the /var/log/httpd/error_log is very large and cotinually logging up this type of error:
[Fri Nov 07 09:06:44 2014] [error] [client 192.168.48.4] PHP Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /usr/local/nagiosxi/html/includes/utils-status.inc.php on line 103, referer: http://192.168.42.3/nagiosxi/includes/components/birdseye/birdseye.php
This error comes up for all different cleint IP addresses. What is causing it and how do I fix it ?
[Fri Nov 07 12:13:09 2014] [error] [client 192.168.48.4] PHP Warning: strtotime(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /usr/local/nagiosxi/html/includes/utils-status.inc.php on line 103, referer: http://192.168.42.3/nagiosxi/includes/components/birdseye/birdseye.php
Awesome! Glad to hear that solved it. For future reference you should be able to change this in the web interface under Admin > Manage System Settings as well.