Using Alarms
The vSphere alarm infrastructure supports
automating actions and sending different types of notification in response to
certain server conditions. Many
Alarms
exist by default on vCenter
Server systems. You can also create alarms yourself. For example, an Alarm can
send an alert email message when CPU usage on a specific virtual machine
exceeds 99% for more than 30 minutes.
The alarm infrastructure integrates with other
server components, such as events and performance counters.
The
AlarmManager
is the service
interface for creating, setting, and managing alarms. You create an alarm,
specifying trigger conditions and the action to take. When the conditions
defined for the
Alarm
occur on the system, the
Action
specified for the alarm
starts. The alarm also generates an
Event
that is posted to the
Event
history database. In
addition, the action initiated by the
Alarm
might also post a second
Event
to the database, depending
on the
Action
type.