Managing VMware Alerts

OpManager's dynamic alerting and threshold capabilities are central to a proactive monitoring approach. OpManager seamlessly fetches events from each vCenter/ESX Host, similar to SNMP traps. Currently, a list of important events is supported, and this list is updated every release. Apart from these events, OpManager also monitors threshold for critical performance indicators and raises alerts.

To tailor this system to your requirements, and change the pre-set threshold values for each performance monitor, go to the Monitors section under the snapshot page of the host / VM / Datastore.

To view the complete list of VMware monitors,

Go to the Monitors tab in the VMware host's snapshot page (Navigate to Inventory -> Devices and then click on a device to view its snapshot page.)
Under the Performance Monitors tab, click on 'Actions' and then on 'Add Performance Monitor'. This will display a list of all performance monitors available in OpManager.
To view the list of Performance monitors for VMware hosts alone, scroll down to the VMware-Host Monitors section.
To view the list of Performance monitors for VMs, scroll down to the VMware - VM Monitors section.
To view the list of Performance monitors for Datastore, scroll down to the VMWare - Datastore Monitors section.
You can also view and add the performance monitors for hosts/VMs by clicking on 'Add Monitors' under their corresponding Device Templates.

Table 1: List of few Threshold Monitors for critical performance indicators related to host, datastore & VM's supported by OpManager

S.No.	Threshold Monitors	Virtual Device Type	Resource
1.	Host Network Received Packets	Host	Network
2.	Host Network Transmitted Packets	Host	Network
3.	Host Network Usage (avg)	Host	Network
4.	Host CPU Utilization (avg)	Host	CPU
5.	Host Memory Utilization (avg)	Host	Memory
6.	Host Disk Read Latency	Host	Disk
7.	Host Disk Write Latency	Host	Disk
8.	Datastore Freespace	Host	Network
9.	VirtualMachine Network Packets Received	VM	Network
10.	VirtualMachine Network Packets Transmitted	VM	Network
11.	VirtualMachine Network Usage (avg)	VM	Network
12.	VirtualMachine CPU Utilization (avg)	VM	CPU
13.	VirtualMachine Memory Usage (avg)	VM	Memory

Table 2: Few of the VCenter / ESX hosts' Events supported by OpManager

S.No.	Events	Virtual Device Type	Severity
1.	VmFailedToPowerOffEvent	VM	Critical
2.	VmPoweredOffEvent	VM	Attention
3.	VmPowerOffOnIsolationEvent	VM	Clear
4.	VmFailedToPowerOnEvent	VM	Critical
5.	VmPoweredOnEvent	VM	Attention
6.	VmFailedToSuspendEvent	VM	Critical
7.	VmSuspendedEvent	VM	Attention
8.	VmFailedToRebootGuestEvent	VM	Critical
9.	VmGuestRebootEvent	VM	Clear
10.	VmFailoverFailed	VM	Trouble
11	VmPrimaryFailoverEvent	VM	Critical
12.	VmUpgradeFailedEvent	VM	Critical
13.	VmUpgradeCompleteEvent	VM	Clear
14.	VmDisconnectedEvent	VM	Attention
15.	VmConnectedEvent	VM	Attention
16.	VmDiskFailedEvent	VM	Critical
17.	VmRelocatedEvent	VM	Attention
18.	VmRelocateFailedEvent	VM	Critical

You can view the complete list of ESX host/vCenter Events that are supported by OpManager, under Settings → Monitors → VMware Events.

Note: OpManager only triggers alarms based on VMware events, and they have to be manually cleared once the issue/notification has been taken care of.

In addition to this, you can also enable Physical NIC/Host Bus Adapter based alerts in OpManager for your VMware parent devices. These alerts can be enabled during discovery of that parent device or from the Update Inventory page, by enabling the "Raise alerts for Physical NIC & Host Bus Adapter" option. These are the available status messages in OpManager and their NIC/HBA equivalents:

Physical NIC status messages:

S.No	OpManager status message	Corresponding NIC status
1	Clear	Connected
2	Critical	Disconnected

Host Bus Adapter status messages:

S.No	OpManager status message	Corresponding HBA status
1	Clear	Online
2	Attention	Unbound (or) Offline
3	Trouble	Fault

To gain in-depth insights into OpManager's VMware monitoring practices, explore the following help documents.

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Managing VMware Alerts

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