Azure Application Gateway
An Azure service that provides a platform-managed, scalable, and highly available application delivery controller as a service.
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Application Gateway Infinite Refreshes
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Alex Nedelcu
0
Reputation points
Hi Support Team,
I deployed an Azure Container App behind an Application Gateway. I am able to access it using the Application Gateway public IP. The issue is that the page seems to be infinitely refreshing in browser.
Any idea what might be the cause?
Thank you!
Azure Application Gateway
Azure Container Apps
Azure Container Apps
An Azure service that provides a general-purpose, serverless container platform.
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KapilAnanth-MSFT 47,196 Reputation points Microsoft Employee2024-05-13T05:22:55.5333333+00:00 Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.
- Is the issue reproducible when you directly access the Container Apps without using App Gatewat?
- When you say "infinitely refreshing" - do you mean the browser's refresh icon is always spinning?
- Or there are infinite redirects? i.e., 3XX Errors from Dev Tools.
- You may open the dev tools and see if there is any resource (like png or jpeg or gif) that keeps on loading once your main site is accessed
- Can you share a screenshot of the Dev Tools so as we may better understand the issue.
Cheers,
Kapil
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Alex Nedelcu 0 Reputation points
2024-05-13T06:41:00.8733333+00:00 @KapilAnanth-MSFT thank you for the answer, here are the details you requested (sorry for replying from another account):
- Right now, the Container Apps reside in an internal Container Apps Environment, so I cannot access them without going through App Gateway. But when they were in an external Container Apps Environment and I could access them directly by the URL, the issue was not reproducible.
- I will attach in the conversation a screen capture depicting the sequence of network calls between 2 refreshes (or possibly redirects)
- Also not sure how relevant it is, but the health of the App Gateway backend is determined using a custom probe, which interprets 404 as successful
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KapilAnanth-MSFT 47,196 Reputation points Microsoft Employee
2024-05-13T12:23:58.8966667+00:00 - Can you confirm if all the content is served? Or something is always loading in Dev Tools - which leads to the browser icon spinning?
- It's quite impossible to say it from the screenshot.
- Wrt custom probe, isn't that configurable?
- I would suggest strongly against having 4XX as an accepted healthy HTTP Status
- See : Probe properties
- Also see : Probe matching
- May I know why you have kept 4XX as an accepted healthy status?
Cheers,
Kapil
- Can you confirm if all the content is served? Or something is always loading in Dev Tools - which leads to the browser icon spinning?
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