Event generators

Event generators gather information by monitoring a task or a statistic or by probing a server for access or connectivity. Each event generator has a specified threshold or condition, which, when met, causes an event to be created The event is passed to the Event Monitor task, which checks whether an associated event handler has been defined. If an event handler has not been defined, the Event Monitor task does nothing. If an event handler has been defined, the Event Monitor carries out the instructions in the event handler. The Event Monitor task, formerly know as the Event task, starts automatically when you start the server and must run on all servers that you want to monitor.

The Domino® Administrator includes a set of default event generators, which are listed in the Event Generators view of the Monitoring Configuration database (EVENTS4.NSF). To monitor other events that are important to you, you must create an event generator and define the type and severity of the event.

To create an event generator, click the Configuration tab of the Domino® Administrator and then click Monitoring Configuration > Event Generators. Then open the view for the type of event generator to create and click the button shown. The event generator document is created in the view.

The following table lists the types of event generators you can create. If you purchased an add-in product designed to work with server-management programs, you may see additional types of events listed.

Table 1. Types of event generators

Event generator

Description

Database event generator
  • Monitors database activity and free space
  • Monitors frequency and success of database replication
  • Reports on ACL changes, including those made by replication or an API program

Domino® server response event generator
  • Checks connectivity and port status of designated servers in a network

Mail routing event generator
  • ISpy task sends a mail-trace message to a particular user's mail server and gathers statistics indicating the amount of time, in seconds, it takes to deliver the message
  • -1 indicates mail-trace failure

Statistic event generator
  • Monitors a specific Domino® or platform statistic
  • Requires that statistic alarms be enabled on the Domino® Server (through Server Statistic Collection document) or the Domino® Administrator (through File - Preferences - Administration Preferences)
  • Exceeded thresholds create alarm documents in the Monitoring Results database (STATREP.NSF)
  • Statistic events created for initial alarm reports, then created once daily, by default, until alarms cleared.

Task status event generator
  • Monitors the status of Domino® server and add-in tasks

TCP server event generator
  • ISpy task sends a probe verifying the availability of Internet ports (TCP services) on a server and generates a statistic indicating the amount of time, in milliseconds, it takes to verify that the server is responding on the specified port
  • -1 indicates probe failure