To generate an email alert to admin@contoso.com when CPU percentage utilization for db1 is higher than average, you can use the Azure portal to create an alert rule based on the CPU percentage metric. Here are the steps to do that:
Select Alerts in the Monitoring section and click on New alert rule.
In the Condition section, click Add and select the CPU percentage metric.
In the Configure signal logic page, set the threshold type to Dynamic. This will compare the current metric value to the historical average and trigger the alert when it deviates significantly1.
Set the operator to Greater than, the aggregation type to Average, the aggregation granularity to 1 minute, and the frequency of evaluation to 5 minutes.
Click Done to save the condition.
In the Action group section, click Create and enter a name and a short name for the action group.
In the Notifications section, click Add and select Email/SMS message/Push/Voice.
Enter admin@contoso.com in the Email field and click OK.
Click OK to save the action group.
In the Alert rule details section, enter a name and a description for the alert rule, choose a severity level, and make sure the rule is enabled.
Click Create alert rule to create the alert rule.
This alert rule will send an email to admin@contoso.com when the CPU percentage utilization for db1 is higher than average. You can also add other actions to the alert rule, such as calling a webhook or running an automation script
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