Managing VMware Alerts

OpManager fetches events from each vCenter/ESX Host, similar to SNMP traps. Currently we support important events, and this list is updated every release. Apart from these events, OpManager also monitors threshold for critical performance indicators and raises alerts.

To 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 Major (Cleared on event 2 or 3)
2. VmPoweredOffEvent VM Clear
3. VmPowerOffOnIsolationEvent VM Clear
4. VmFailedToPowerOnEvent VM Major (Cleared on event 5)
5. VmPoweredOnEvent VM Clear
6. VmFailedToSuspendEvent VM Major (Cleared on event 7)
7. VmSuspendedEvent VM Clear
8. VmFailedToRebootGuestEvent VM Major (Cleared on event 9)
9. VmGuestRebootEvent VM Clear
10. VmFailoverFailed VM Critical (Cleared on event 11)
11 VmPrimaryFailoverEvent VM Clear
12. VmUpgradeFailedEvent VM Major (Cleared on event 13)
13. VmUpgradeCompleteEvent VM Clear
14. VmDisconnectedEvent VM Warning (Cleared on event 15)
15. VmConnectedEvent VM Clear
16. VmDiskFailedEvent VM Major
17. VmRelocatedEvent VM Clear
18. VmRelocateFailedEvent VM Critical (Cleared on event 17)

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