Event triggers are composed of a trigger type, a trigger status, and triggering conditions.

Event Trigger Components describes the components of event alarm triggers.

Event Trigger Components

Trigger Component

Description

Trigger type

Event to monitor. Events can be generated by a user action or the system, for example, Account Password Change and Alarm Email Sent.

Status

The value that must be met for the alarm to trigger:

Normal

Warning

Alert.

Conditions

Specifications that define the trigger.

Event conditions include the following components:

Argument – The event attribute to monitor.

Operator – The qualifier used to set the trigger value, for example Starts with and Doesn’t start with.

Value – The value that must be met to trigger the event.

Conditions are not configurable for all events.

For example, you have a subset of hosts in the same datacenter named with the identifying prefix, QA_. To trigger an alarm when any of these hosts lose network connectivity, create an alarm on the datacenter to monitor the event Lost Network Connectivity. The trigger conditions are:

Argument — host.name

Operator — Starts with

Value – QA_

When storage connectivity is lost on a host named QA_Host1, the event triggers.

Event triggers do not rely on thresholds or durations. They use the arguments, operators, and values to identify the triggering condition. When the triggering conditions are no longer true, a triggered alarm resets automatically, and no longer triggers.