I have created an azure app service(basic one, with a basic html page) I have created Front Door, added as Front end, added App service as back end pool and created a rule which has 2 paths /* and /path I have this saved, so accessing from main front door open web app properly but opening from path /path throws error "The resource you are looking for has been removed, had its name changed, or is temporarily unavailable."

Hello @Rashmi Sajjan , Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well. Are you able to access your webapp on the configured path directly bypassing the AFD? If you want to access the backend pool (web app in your case) based on the path URL with Azure front door, you must make sure the virtual path exists on your web app. For example, you have to add the virtual directory /path (like /new in the below example) in your app service like this: Refer : https://learn.microsoft.com/en-us/azure/app-service/configure-common#configure-path-mappings So you could access your web app via URL https://xxx.azurewebsites.net/new . Then you could add */new/** or /new in the PATTERNS TO MATCH and modify the Forwarding protocol to match request in your routing rule of Azure Front door: After this, you could access the URL frontdoor.azurefd.net/new for your web app. For more reference: https://learn.microsoft.com/en-us/azure/frontdoor/front-door-route-matching Kindly let us know if the above helps or you need further assistance on this issue. Please " Accept the answer " if the information helped you. This will help us and others in the community as well.

Azure front Door routing rule not working throws error "The resource you are looking for has been removed, had its name changed, or is temporarily unavailable."

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GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-13T12:57:29.907+00:00

Hello @Rashmi Sajjan ,

Welcome to Microsoft Q&A Platform. Thank you for reaching out & hope you are doing well.

Are you able to access your webapp on the configured path directly bypassing the AFD?

If you want to access the backend pool (web app in your case) based on the path URL with Azure front door, you must make sure the virtual path exists on your web app. For example, you have to add the virtual directory /path (like /new in the below example) in your app service like this:

Refer : https://learn.microsoft.com/en-us/azure/app-service/configure-common#configure-path-mappings

So you could access your web app via URL https://xxx.azurewebsites.net/new.
Then you could add */new/** or /new in the PATTERNS TO MATCH and modify the Forwarding protocol to match request in your routing rule of Azure Front door:

After this, you could access the URL frontdoor.azurefd.net/new for your web app.

For more reference: https://learn.microsoft.com/en-us/azure/frontdoor/front-door-route-matching

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

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.
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Rashmi Sajjan 56 Reputation points

2021-10-13T13:39:59.12+00:00

Oh, I see... Its working now. Thank you so much
But these Path mapping are for windows app services only, this option is not available for Linux one

Does is need to be configured for every path that we add in routing configuration of front door?
If so , is there any limit of how many 'virtual path exists ' can be added to app service?

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-13T14:05:41.683+00:00

Hello @Rashmi Sajjan ,

Thank you for the update. Glad to hear that it is working now.

I checked with the App service team and they mentioned that for linux webapps, you need to go to the root folder and create a JSON for the path mapping. And as far as they know, there is no limit on the number of virtual paths in a webapp.

Still, I'm trying to get a more concrete confirmation on this and will update you once I receive any information around it.

----------------------------------------------------------------------------------------------------------------

Please "Accept the answer" if the information helped you. This will help us and others in the community as well.

Rashmi Sajjan 56 Reputation points

2021-10-13T14:11:01.83+00:00

Hello @GitaraniSharma-MSFT , Thanks for the response.

Does this configuration differ for Angular application?

It seem to working for normal app but for Angular app, it is not able to load components(works fine on normal app service endpoint)
As per some documentation I chose path as 'Redirect' and redirected to our website

path is set as '/sonepar'

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-13T14:29:06.45+00:00

Hello @Rashmi Sajjan ,

I have not tried any AFD configuration with Angular application but let me research on it & get back to you.

One more thing that I forgot to add in my answer was below:

If you are trying to access your main application based on a path, then you can do so without virtual path mapping as well. You just have to set up URL rewrite on that particular routing rule with a custom forwarding path of "/" as below:

NOTE : This setting will take some time to come into effect. So please wait for around 20-30 mins.

If you do this & remove your virtual path mappings from your webapps, you can still access the main application with the path configured on your AFD.
This way the same application main page will be rendered when you access it via frontdoor.azurefd.net or frontdoor.azurefd.net/new.

But if you want to access specific pages on your application via the path on AFD, then configuring those paths on your webapp along with the page is required.

Regards,
Gita

Rashmi Sajjan 56 Reputation points

2021-10-13T14:37:58.163+00:00

@GitaraniSharma-MSFT - Yep, is working on Angular now.

But, it does not hold the /path -> it redirects to app service endpoint and removes '/sonepar' at the end
We wanted to identify customer based on this /path but this part is being truncated.
I did try using 'Redirect' instead of forward and specified as below

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-13T14:53:03.307+00:00

@Rashmi Sajjan , since you are preserving the destination host, how about using URL rewrite instead of redirect as below:

Did you try this? Could you check if this works?

Rashmi Sajjan 56 Reputation points

2021-10-13T15:16:26.12+00:00

Yes, I did try with that and its does not seem to be working

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-13T15:32:31.72+00:00

@Rashmi Sajjan , what is the error that you receive in this setting? Also, is your application HTTPS only? I see you have setup forwarding protocol as HTTPS only.

Rashmi Sajjan 56 Reputation points

2021-10-13T15:53:46.103+00:00

@GitaraniSharma-MSFT Error is that it does not hold the path that is configured

suppose I create a routing path from front door 'www.frontdoor.com' as '/sonepar' for my back end pool which points to 'www.backend.com' , normal app when accessed as 'www.frontdoor.com/sonepar' would redirect to 'www.backend.com/sonepar' (its working for normal app service that created)
but when I try for angular app, it truncates /sonepar and just re-directs to 'www.backend.com'

yes, our application is HTTPS(I tried keeping it on and off), but /sonepar is not retained when re-directed

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-14T09:24:18.723+00:00

@Rashmi Sajjan , do you have a page on the path /sonepar or you want to access the main www.backend.com page on path /sonepar?

Rashmi Sajjan 56 Reputation points

2021-10-14T12:19:29.55+00:00

@GitaraniSharma-MSFT - I want to access main ww.backend.com on path /sonepar

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-14T14:22:59.397+00:00

@Rashmi Sajjan , in that case, the URL rewrite with a custom forwarding path of "/" should work. Did you try this config?

Rashmi Sajjan 56 Reputation points

2021-10-14T15:05:14.25+00:00

@GitaraniSharma-MSFT As mentioned in previous reply, yes I did! with no luck

140626-frontend.png

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-14T16:45:22.323+00:00

@Rashmi Sajjan , I checked internally but couldn't find any known issues with Azure Front Door using Angular application as backends. So, we may need to look into this issue offline. Hence, I would request you to send us an email as advised in the private message.

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-19T10:54:21.147+00:00

@Rashmi Sajjan , any updates on this post from your end?

GitaraniSharma-MSFT 47,686 Reputation points Microsoft Employee

2021-10-21T13:59:47.007+00:00

@Rashmi Sajjan , I'm following up again to check for any updates on this post from your end?

Rashmi Sajjan 56 Reputation points

2021-10-25T05:45:17.19+00:00

Hey, @GitaraniSharma-MSFT - Apologies for the delay as I was on vacation. Yes, I did send a mail to the mentioned id with Subscription Id.
Thank you for the timely replies.
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Azure front Door routing rule not working throws error "The resource you are looking for has been removed, had its name changed, or is temporarily unavailable."

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