Health Probe Comparison

[cogran]

It would helpful the difference in health probes with the Azure Front Door compared to other Azure Networking products such as Load Balancers and Application Gateways which have much more generous allowances for their "healthy" probe statuses. Making a call out to this may reduce confusion with first time users.

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Document Details

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• ID: f35a0b39-ab2f-ba8a-0907-e0f3a6b69135
• Version Independent ID: 0e6c8267-a911-9c6b-0522-3ec96753b3ef
• Content: Azure Front Door Service - backend health monitoring
• Content Source: articles/frontdoor/front-door-health-probes.md
• Service: frontdoor
• GitHub Login: @sharad4u
• Microsoft Alias: sharadag

[msrini-MSFT]

@cogran , Thank you for your feedback. We will investigate and get back to you shortly.

[msrini-MSFT]

For Load balancers and Application gateway, Health probes are used to check the backend health and take the servers out of rotation when they are unhealthy.

In AFD, heath probes are not only used for tracking the health of the backend and taking the unhealthy servers out of rotation but also to route the traffic to the server based on latency, priority and weights.

Unlike application gateway, you cannot configure custom probe status here. Only response with 200 OK will be accepted.

Let me know if you have any further questions.

[msrini-MSFT]

@cogran , Do you have any update on this issue?

[cogran]

@msrini-MSFT — I think the explicit comparison above helps alleviate potential confusion/provides additional clarity. I would consider this resolved.