I am trying to setup IP Based SSL instead of SNI SSL on an azure Web App.
The App Service Plan is Standard S1, but unfortunately I am getting the following error message:
There are no IP addresses in the App Service Environment that are available to be assigned to your app.
What are the possible options?
I believe moving the current Web App to a different App Service Plan in a different resource group would solve this issue. I Have already tried moving the App service plan to a different resource group but failed.
Note: Clicking the scale up button doesn't work and shows a JavaScript error in the console
JavaScript Error found in Chrome console
Byron is correct that this is a bug in the UX.
A fix has been made and should be live later today.
Your app is being hosted in an App Service Environment.
Looks like the scale up bottom is not working and that is probably a bug in the UX.
As a workaround you should be able to go directly to the App Service Environment that is hosting your app and perform the scale operation there.
once the scale operation in the App Service environment is done and the new IP Address is added, then you should be able to come back to the SSL binging UX in the app and try this again.
Related
I have an application gateway running with a web application in a App service plan. The application gateway listens and passes requests to the backend, which is the web app. There is a health probe implemented that works fine.
The web app was reachable fine until I scaled up the Service plan. Suddenly the health probe timed out reaching the backend and I got a 502 bad gateway error in the browser trying to reach the web application. After hours the website suddenly was back and the backend was healthy again. I was under the impression that you could scale up and down the App plan without any noticeable effect on the website, but it seems the gateway was not playing along.
Did I configure something wrong or should this work like I assumed?
I tried to reproduce the same in environment create app service running with application gateway and got a 502 error.
The number of TCP connections allowed by the plan standard while is an older it contains the double make sure while scaling up and down in app service try to remain in same tier so that inbound IP will wait for sometimes and then scale back.
Try to update your default setting in configuration ->General setting-> ARR Affinity Off. Either your application isn't stateful, or the session state is kept on a distant service like a cache or database. And try to Run your application with a minimum of 2-3 instances to prevent from failure.
You can make use of app service diagnostics gives you the right information to more easily
For Reference:
Get started with autoscale in Azure - Azure Monitor| Microsoft
Guide to Running Healthy Apps - Azure App Service
And I got the same error in application gateway as well to avoid the issue
In your virtual network -> service endpoint -> Add endpoint Microsoft.web in default subnet
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I have an Azure App Gateway connected to 3 different App Service apps all running as part of the same App Service Plan (3 different back-end pools). In the Backend Health section of the AG, one of the app/pool is constantly flipping between Healthy and Unknown states. I have checked the entire network configuration according to this article and everything seems to be configured properly.
I have configured ip restrictions on the app services according to this article specifying the subnet the AG resides in as allowed. I have also temporarily allowed my ip address and every time the health for the 1 app goes to "unknown", I am still able to access the app service using its native .azurewebsites.net url locally on my machine.
Any ideas how I can troubleshoot this?
Please check if below points help to work around the issue.
As a workaround initially,try to restart the application gateway after the backend is deployed .
Also check this discussion on github issue
Sometimes Appgateway will cache the response indefinitely and the fix
maybe "Dynamic DNS" which ensures that the "no existing domain" is not
cached on the Appgw.Also check for the fix using v16.
Also check this > similar issue which says to use custom domain names as the request looks for some domain.
I have a web application that is currently running on IIS in 3 Azure VMs. I have been working to make my application App-Services friendly, but would like to test the migration to App-Services in a safe / controlled environment.
Would it be possible to spin up the App-Service and use an Azure Load Balancer to redirect a percentage of traffic off the VM and onto the App-Service?
Is there any other technology that would help me get there?
You might be able to achieve this if you are using an App Service Environment and an internal load balancer
https://learn.microsoft.com/en-us/azure/app-service/environment/app-service-environment-with-internal-load-balancer
However, based on your description of your current setup I don't believe there is an ideal solution for this as a standard load balancer only allows for the backend ports to map to VMs. Using an Application Gateway might be another option as well
https://learn.microsoft.com/en-us/azure/application-gateway/
I would suggest you make use of the deployment and production slots available that comes a Web App. Once you have the webapp running in the dev slots, test the site to ensure all works as expected. Once it does, switch it to the production slot and reroute all traffic from the VMs to the App Service.
All in all, running an app on a Web App is quite simple. Microsoft takes away the need to manage the VM settings so you can simply deploy and run. I don't see you having any issues simply migrating. The likelihood for issues is small. You can also minimalism it by performing the migration during off hours in case you need to make any changes.
There is also some Web App migration guidance you might find useful
https://learn.microsoft.com/en-us/dotnet/azure/dotnet-howto-choose-migration?view=azure-dotnet
In Azure, I turned on IP restrictions for:
Web App (Networking > Access Restrictions)
SQL server (Firewalls and virtual networks > Add client IP)
SQL database (Set server settings)
The solution still builds locally and in DevOps (aka Team Foundation Server).
However, Azure App Service Deploy now fails:
##[error]Failed to deploy App Service.
##[error]Error Code: ERROR_COULD_NOT_CONNECT_TO_REMOTESVC
More Information: Could not connect to the remote computer
("MYSITENAME.scm.azurewebsites.net") using the specified process ("Web Management Service") because the server did not respond. Make sure that the process ("Web Management Service") is started on the remote computer.
Error: The remote server returned an error: (403) Forbidden.
Error count: 1.
How can I deploy through the firewall?
Do I need a Virtual Network to hide Azure resources behind my whitelisted IP?
The REST site scm.azurewebsites.net must have Allow All, i.e. no restriction. Also, Same restrictions as ***.azurewebsites.net should be unchecked.
It does not need additional restriction because url access already requires Microsoft credentials. If restrictions are added, deploy will fail the firewall, hence the many complications I encountered.
I think the answer is incorrect as you might face data ex-filtration and that's the reason Microsoft provide the feature to lock down SCM portal (Kudu console)
There is also a security issue on Kudu portal as it can display the secret of your keyvault (if you use keyvault) and you don't want someone in your organisation to access the Kudu portal for example.
You have to follow this link
https://learn.microsoft.com/en-us/azure/devops/organizations/security/allow-list-ip-url?view=azure-devops
It will provide you Azure DevOPS IP range that you need to allow on the SCM Access restriction.
Update: To make it works as expected and to use App Service Access Restriction (same for an Azure Function), you need to use the Service Tags "AzureCloud" and not the Azure DevOPS IP range as it's not enough. on the Azure Pipeline logs, you can see the IP blocked so you can see that it's within the ServiceTags "AzureCloud" in the Service Tags JSON file
It's not really clear on the MS Doc but the reason is that they struggled to define a proper IP range for Azure DevOPS Pipeline so they use IPs from AzureCloud Service Tag.
https://www.microsoft.com/en-us/download/details.aspx?id=56519
In my case I was deploying using Azure DevOps and got the error. It turned out the app service where my API was being deployed to, had the box checked "Same restrictions as xxxx.azurewebsites.net", under access restrictions or IP restrictions. you need to allow scm.azurewebsites.net.
Try adding the application setting WEBSITE_WEBDEPLOY_USE_SCM with a value of false to your Azure App Service. This was able to solve my issues deploying to a private endpoint.
In my case it was because the daily quota was overpassed.
So the solution in this case is either wait or pay more (scale up) the app service
In my case this was because the wrong agent (Windows Hosting) was being used when I should have been using a self hosted internal agent... so I needed to change it at the following location
Hi, I am trying to configure a basic traffic manager on my azure account. But I always got 404 not found when I using the traffic manager URL.
I have two app service for the TM endpoints:
1. xxxus.azurewebsites.net
2. xxxeu.azurewebsites.net
TM Url is:
xxxtm.trafficmanage.net
I was able to use www.whatsmydns.net to check what the tm is heading to.
But when I use the TM url, I got this:
Did anyone has the same issue? Looking forward to your help
Thank you
I ran into the exact same thing and just found the solution - the app service plan needs to be at least a standard SKU. I was using a free tier, and that was causing my 404.
From Microsoft's Traffic Manager documentation:
Only Web Apps at the 'Standard' SKU or above are eligible for use with Traffic Manager. Attempts to add a Web App of a lower SKU fail. Downgrading the SKU of an existing Web App results in Traffic Manager no longer sending traffic to that Web App.
Currently, you could not add web apps from different subscriptions to the same traffic manager configuration since It is not possible to use Web Apps from multiple subscriptions with the same domain name. Refer to this. You can check this on your side. If so, you can remove one website from your endpoint, then add the website to the same subscriptions.
Moreover, the 404 error always happen due to the domain name could not be resolved by its IP address. It may be one of the following reasons:
The custom domain configured is missing an A record and/or a CNAME record.
The browser client has cached the old IP address of your domain. Clear the cache and test DNS resolution again. On a Windows machine, you clear the cache with ipconfig /flushdns.
You can follow the quickstart to create a Traffic Manager profile, then follow this to verify your traffic manager settings.
I encountered similar issue. My problem is one of my app service is a free tier, so I scaled it up to standard one. And delete my traffic manager and reinstalled and add the service endpoint again, the issue gone.
It's strange. Nslookup will take you to the right web app but the browser will show 404. Changing the app service plan to 'Standard' SKU fixed it for me.