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Answers to Frequently Asked Questions (FAQs) regarding Nagios Fusion can be found here.
System Configuration Problems
Problems Using Nagios Fusion With Proxies
We do not officially support Nagios Fusion when you install and use proxy software that restricts traffic to or from the Nagios Fusion server. There are several reasons for this. First, Nagios Fusion requires external access for package installation and updates. Package installation and updates may not work when proxies are used. Additionally, the Nagios Fusion code makes several internal HTTP calls to the local Nagios Fusion server to import configuration data, apply configuration changes, process AJAX requests, etc. These functions may not work properly when you deploy a proxy, which would result in a non-functional Nagios Fusion installation.
If you have managed to successfully use Nagios Fusion with a proxy, please let us know how you did this, so we can share it with others and improve future product support for proxies.
Display and Data Update Problems
Data is not updating in the UI
For Nagios Fusion, the bulk of the data is gathered with a subsystem polling process which caches the data locally for display. The system polling for the data is logged to: /usr/local/nagiosfusion/var/poller.log, and most connection or data failures will show up in that log. The other log file to watch is the apache error log. If a child Nagios server is returning bad data, it will show up in /var/log/httpd/error_log. If error messages are showing up in either of these logs, contact the Nagios support team with the errors being received in order to troubleshoot the problem.
The following commands can be run to watch the logs that reveal issues with Nagios Fusion:
tail -f /var/log/httpd/error_log
tail -f /usr/local/nagiosfusion/var/poller.log
Tactical Overview Dashlet is empty for Nagios Core server
Nagios Fusion has been tested successfully for Nagios Core versions 3.2.3 or later. Earlier versions of Nagios Core are considered unsupported and may not be compatible with Nagios Fusion.
UI Data does not appear to update / Subsystem Poller is not running
If the data in the Nagios Fusion interface does not appear to update, verify the following two things:
1. Make sure crond is running
service crond restart
2. Make sure that /usr/local/nagiosfusion/var/poller.log exists and is writeable by the nagios user.