Information Technology Reference
In-Depth Information
triggers the activation of the alarm won't get reported again—assuming the condition or state is
still true—for 5 minutes.
With all this information in mind, let's walk through another example of creating an alarm.
This time we'll use a trigger to take advantage of duration and action frequency.
Perform the following steps to create an alarm that is triggered based on VM network usage:
1. Launch the vSphere Web Client if it is not already running, and connect to a vCenter
Server instance.
2. Navigate to an inventory view, such as Hosts And Clusters or VMs And Templates.
3. Select the datacenter object from the Navigator on the left.
4. Select the Manage tab from the content area in the middle.
5. Select the Alarm Dei nitions button just below the tab bar to show alarm dei nitions.
6. Click the add/plus icon to create a new alarm.
7. Supply an alarm name and description.
8. Set the Monitor drop-down list to Virtual Machines.
9. Select the radio button marked “Monitor For Specii c Conditions Or State, For Example,
CPU Usage,” and click Next.
10. On the Triggers screen of the Alarm Dei nition dialog box, click the plus/add icon to add
a new trigger.
11. Add a Trigger of VM Network Usage (kbps) type.
12. Set Condition to Is Above.
13. Set the value of the Warning column to 500, and leave the Condition Length setting at 5
minutes.
14. Set the value of the Alert column to 1000, and leave the Condition Length setting at 5
minutes.
15. On the Actions tab, click the plus/add icon and add a “Send a notii cation email” action.
16. For this newly created action, ensure that Normal
Warning is set at Once and Warning
Critical is set to Repeat.
17. Finally, set Repeat Actions Every to 15 minutes.
18. Click Finish to create the alarm.
This alarm will now send email alerts if the VM network usage goes above 500 kbps for more
than 5 minutes, but only once. If the VM network usage goes above 1,000 kbps for more than
5 minutes, an email will be sent again and then every 15 minutes advising of this critical state
until the alarm is reset to green manually or the usage drops below 1,000 kbps.
Alarms on Other vCenter Server Objects
Although the two alarms you've created so far have been specifi c to VMs, the process is similar for
other types of objects within vCenter Server.
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