MONITORING


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 IBM® Lotus® 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. 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.
Event generatorDescription
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
  • 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
Statistic event generator
  • Monitors a specific Domino or platform statistic
Task status event generator
  • Monitors the status of Domino server and add-in tasks
TCP server event generator
  • Verifies the availability of Internet ports (TCP services) on servers and generates a statistic indicating the amount of time, in milliseconds, it takes to verify that the server is responding on the specified port

Event severity levels

The severity of an event indicates the level of required action.
Severity levelMeaning
FatalImminent system crash
FailureSevere failure that does not cause a system crash
Warning (high)Loss of function requiring intervention
Warning (low)Performance degradation
NormalStatus messages
See also