What is the meaning of the of nas alarm Subjects?

Document ID : KB000034366
Last Modified Date : 25/04/2018
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Question:
What is the meaning of the of nas alarm Subjects?
Environment:
UIM 8.x
nas 4.x / 9.x
Answer:
‚ÄčThe Nimsoft Alarm Server (NAS) subscribes to "raw alarm" messages. These messages are generated by the Nimsoft spooler under the "alarm" subject.

The NAS attaches to a hub queue named "nas", and processes each incoming alarm according to its current configuration settings. The NAS performs pre-processing and post-processing of the alarms, through the auto-operator mechanism. The data is maintained in an embedded database and published back onto the messaging bus as the following events:

alarm_new, alarm_update, alarm_close, alarm_delete, alarm_assign alarm_stat.

The target audiences for these events are the NimBUS consoles and gateways.

From the nas Help doc:
  • The Alarm Server notifies the world about changes to its alarm database by issuing event-messages to the Infrastructure Manager Alarm window.
  • When an alarm message is received and its footprint is not previously recorded, an alarm_new message is generated.
  • However, if the footprint already exists, an alarm_update message is generated.
  • Whenever a client closes (acknowledges) an alarm it will be removed from the currently active alarms, and an alarm_close message will be generated.
  • All transactions such as new, suppress and close are logged to the transaction log, and may be viewed through the NAS configuration tool.
  • The Alarm Server will generate a statistical event message, alarm_stats, containing the summary information (on severity level) for all open alarms.
Additional Information:
Where are the alarms stored in UIM?

What do the time related fields mean in the Alarm Tables in UIM?

nas Transaction Logging/Transaction Summary and compression

Nas alarm counts are not in sync between UMP USM and the Infrastructure Manager alarm subconsole

Why do some alarms' "count" increase immediately in the alarm console while others don't show the count increasing even when the alarms are suppressed?

Nas (alarm server) documentation