Dell OpenManage Integration for VMware vCenter 2.1 Manual de usuario Pagina 69

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10
Understanding Events And Alarms for Hosts
You can edit events and alarms settings from the OpenManage Integration for VMware vCenter within Manage
Settings tab. From here you can select the Event Posting Level, enable Alarms for Dell Hosts, or Restore Default Alarms.
You can configure events and alarms for each vCenter or all at once for all registered vCenters.
NOTE: To receive Dell events, you must enable both alarms and events.
There are four event posting levels.
Table 3. Event Posting Level Descriptions
Event Description
Do not post any Events Do not have the OpenManage Integration for VMware
vCenter forward any events or alerts into related vCenters.
Post all Events Post all events, including informal events, that the
OpenManage Integration for VMware vCenter receives
from managed Dell hosts into related vCenters.
Post only Critical and Warning Events Posts only events with either Critical or Warning criticality
into related vCenters.
Post only Virtualization-Related Critical and Warning
Events
Post Virtualization related events received from hosts into
related vCenters. Virtualization related events are those
that Dell has selected to be most critical to hosts running
virtual machines.
When you configure your events and alarms, you can enable them. When enabled, critical hardware alarms can trigger
the OpenManage Integration for VMware vCenter to put the host system into a maintenance mode, and in certain cases,
migrate the virtual machines to another host system. The OpenManage Integration for VMware vCenter forwards events
received from managed Dell hosts, and creates alarms for those events. Use these alarms to trigger actions from
vCenter, like a reboot, maintenance mode, or migrate. For example, when a dual power supply fails and an alarm is
created, the resulting action is to migrate the virtual machine on that machine to a new one.
A host enters or leaves maintenance mode only as when you request it. If the host is in a cluster when it enters
maintenance mode, you are given the option to evacuate powered-off virtual machines. If this option is selected, each
powered-off virtual machine is migrated to another host, unless there is no compatible host available for the virtual
machine in the cluster. While in maintenance mode, the host does not allow deployment or
power-on
of a virtual
machine. Virtual machines that are running on a host entering maintenance mode need to be either migrated to another
host or shut down, either manually or automatically by VMware Distributed Resource Scheduling (DRS).
Any hosts outside of clusters, or in clusters without VMware Distributed Resource Scheduling (DRS) enabled, could see
virtual machines being shut down due to a critical event. DRS continuously monitors usage across a resource pool and
intelligently allocates available resources among virtual machines according to business needs. Use clusters with DRS
configured in conjunction with Dell Alarms to make sure that virtual machines are automatically migrated on critical
hardware events. Listed in the details of the on screen message are any clusters on this vCenter instance that may be
impacted. Confirm that the clusters are impacted before enabling Events and Alarms.
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