Where are the Azure App Server Alerts documented

Question

Hi all;

I can find a lot of documentation listing the Azure App Service Monitor | Alerts functionality. But I can't find what the settings mean specifically.

For Response Time, What does the Operator Greater or Less than mean? And what do the Threshold Sensitivity settings mean? I think what I want is an email when it gets overloaded. But I have no idea what settings will tell me that.

For Health check status I want to get an email if anything goes bad (warning or error). So what is the Threshold value setting? And I probably need to know the specifics of the other settings.

thanks - dave

Answer 1

Hi David Thielen,

Thanks for reaching out to Microsoft Q&A.

Greater Than:

Triggers an alert if the response time exceeds the specified threshold.

Less Than:

Triggers an alert if the response time falls below the specified threshold, which could indicate underutilization or an error in reporting.

Threshold Sensitivity:

Adjusts the alert’s sensitivity to fluctuations in the monitored metric. Higher sensitivity means alerts will trigger with smaller deviations from the threshold.

Health Check Status Threshold:

A value that determines when an alert should be triggered based on the health check status. Setting it to “Any” will notify you for any warning or error.

https://learn.microsoft.com/en-us/azure/azure-monitor/best-practices-alerts

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Answer 2

Hi @David Thielen to set up Azure App Service alerts effectively, here are the key points regarding your specific requirements:

Response Time Alerts

Operator Greater or Less Than:

• Greater Than: Triggers an alert when the response time exceeds the specified threshold.
• Less Than: Triggers an alert when the response time is below the specified threshold.

Threshold Sensitivity:

• Low Sensitivity: Triggers fewer alerts, suitable for avoiding false positives.
• Medium Sensitivity: Balances between low and high sensitivity.
• High Sensitivity: Triggers alerts more frequently, ideal for critical applications where any deviation needs immediate attention.

The Threshold value for Health Check Status is used to define the condition that will trigger the alert. If the health check status falls below this threshold, the alert will be triggered.

To get an email for any warning or error, you'd want to set a low threshold, possibly 0 or choose an appropriate threshold based on your performance benchmarks. Higher sensitivity is recommended if you need immediate notifications for any overload instances​

Best,

Grace