5.8.5

Table Of Contents
Working with Faults and Alerts 6
vCenter Operations Manager generates alerts when events occur on the monitored objects, when data
analysis indicates deviations from normal metric values, or when a problem occurs with one of the
vCenter Operations Manager components. Events that the vCenter Server publishes are the main source for
faults.
This chapter includes the following topics:
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“Events that Generate Faults,” on page 65
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“Monitoring Alerts in vCenter Operations Manager,” on page 66
Events that Generate Faults
Problem events and problem remediation events generate faults.
Events that the vCenter Server publishes are the main source for faults. These events might originate in the
vCenter Server itself, or ESX servers might generate them and the vCenter Server publishes them externally.
Only a subset of vCenter events are considered as important for fault generation.
Faults are collected by the vCenter adapter for vCenter Operations Manager. During normal operation, fault
events are collected every 5 minutes by the vCenter adapter.
If the Faults badge of an object has a high score, you can use the information from the Details tab to
troubleshoot and resolve the faults. For information about a particular fault for an object, see the help topic
for the fault event on that type of object.
Problem Events
Problem events indicate the occurrence of a fault scenario. vCenter Operations Manager computes a fault
badge score and creates an alert for the problem event. The greater the severity of the problem, the higher
the fault badge score that is computed. An example of this type of event is Host Connectivity Lost, which
occurs on a host object. This event indicates that the vCenter Server cannot communicate to the host. More
than one event might result from the same problem or type of fault.
Remediation or Clear Events
Remediation, or clear, events communicate resolution of a problem. Upon receiving a remediation or clear
event, vCenter Operations Manager resets the fault score and clears or cancels the associated alert. An
example of this type of event is Connected to Host, Connected to Host, which indicates that communication
between the vCenter Server and the host is active again.
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