Getting Warning in Front Door.

Question

Getting this error or warning in front door how to solve this Degraded : Degraded Backends (Unplanned)

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At Wednesday, 20 March, 2024 at 5:44:46 am IST, the Azure monitoring system received the following information regarding your Front Door:

One or more of your Front Door backends are responding with errors to health probes. The backends associated with this Front Door are not responding to health probes with the expected status.

Recommended Steps

• The detected Origin Health event represents an aggregate health status across all your origins. Please check 'Origin Health Percentage' metrics in Metrics blade (Monitoring section) to identify the specific origin that is experiencing issues.
• Review 'Origin Health Percentage' metrics in metrics and logs documentation.

Answer 1

Hello @TEJAS GHANWAT ,

I understand that you are getting the following error or warning in your Azure Front Door and would like to know how to solve it: "One or more of your Front Door backends are responding with errors to health probes".

I checked Azure Status history page for any service issues that may have impacted the Azure Front Door but couldn't find any incident reported on 20th March. I only see incidents from 14 March 2024 and 5 April 2024.

Refer: https://azure.status.microsoft/status/history/

This error/warning is observed when the backend is not responding to the Azure Front door’s health probe requests.

Refer: https://learn.microsoft.com/en-us/azure/frontdoor/health-probes#health-probe-responses

But you confirmed that you have 2 backend pools, and you are getting 200 ok status code. So, you are not sure why you are getting the health probe warnings in the resource health of Front Door.

I checked internally and found some other customers reporting similar issues. This needs to be investigated further by the backend team for a fix.

So, if you have a support plan, I request you file a support ticket, else please do let us know, we will try and help you get a one-time free technical support.

In case you need help with a one-time free technical support, please check the private message for next steps and email us with the requested details.

Kindly let us know if the above helps or you need further assistance on this issue.

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