Nan Notification Aggregator and Delimiter

The HP XC System Software incorporates the Nan notification aggregator and delimiter for the Nagios paging system. Nan is an open source supplement to the Nagios application.

Nagios is capable of sending quantities of messages especially when the system is starting up, shutting down, or experiencing a failure. The Nan front-end utility overcomes the problem of multiple messages by collecting, batching, and reformatting these messages so that they are sent in a controlled manner. You can configure how multiple concatenated notifications are sorted so that the most important notifications appear at the top.

The Nan utility consists of the following:

When the nand daemon receives a notification from Nagios, it starts a timer. If the notification is a PROBLEM or RECOVERY, the default time is 300 seconds; if the notification is an ACKNOWLEDGEMENT, the default time is 600 seconds. Subsequent Nagios notifications are queued in the /opt/hptc/nagios/var/nanqueue directory until the specified time elapses. Then the nand daemon sends a condensed message based on the following criteria:

The default values specified in the nand.conf and nanc.conf configuration files are appropriate for most HP XC systems; however, you can change these values to suit your installation. Follow these steps when updating either or both of these configuration files.