The "alarmLink" URL value is not always included in alarm events (4380080)

The alarmLink property is included in SNMP trap messages and can be used to retrieve the alarmID from the URL but its value is not consistently present for "cleared" alarm events.

For example:

• When alarms are cleared manually or by a script that calls the clearAlarm method, the alarmLink property includes the complete URL—for example, https://foglight.yourdomain:8443/aui/alarm-details/1c43fd65-638b-4fcf-801e-efe0a01a0ca1
• When alarms are cleared automatically in the case of a multiple severity rules, the alarmLink value is No alarm reported.

This behavior is intentional.

When an alarm is automatically cleared, Foglight recognizes that the condition has returned to normal and updates the URL accordingly. However, when alarms are cleared manually or via script, it’s uncertain whether the condition has truly normalized, so the original URL is retained.

As a workaround, to obtain the alarmID value, the Forward Alarms as SNMP Traps rule can be customized to include the alarmID property value in the SNMP Trap message; for example:

1. Add an "expression" rule or severity level variable named eventAlarmID with the Expression/Messages set to @event.get("alarmID")
2. In the trap action configure a new customized binding variable value and OID:
   • Set the VarBind01OID user defined value to 1.3.6.1.4.1.7572.1.4.100
   • Set the VarBind01Value user defined value to the name of the variable @eventAlarmID

   Note: Use the next available binding variable and specify the OID value accordingly, for more information refer to Support for customized values in Foglight trap actions (4228912).