Getting Azure key vault certificates works only from local machine - azure

I am using Identity server to handle logins in my app hosted in MS Azure. I am using Azure key vault to store my certificates. When I am trying to obtain certificates from Azure Key Vault on local machine, everything works fine, but after deploying to the server, I am getting the error described bellow.
I have followed this tutorial: https://damienbod.com/2020/04/09/using-certificates-from-azure-key-vault-in-asp-net-core/
I have created Azure AD and registered my app into it. Also I have created Azure Key Vault, added my app into Key Vault access principles and inside my app service I have allowed identity assigned by the system.
When I deployed this app on the server I am getting this error
In the key vault I allowed all permissions for this app
Is there some more setting, which needs to be done before deploying?
Thanks.

After you enable the system-assigned identity for your app service, you also need to add it to the Access policies of the keyvault with the correct certificate permission(just navigate to the Access policies, search for the web app name and add it).
The sample you provided use the AzureServiceTokenProvider, when you deploy your code to app service, it should use the system-assigned identity to access the keyvault in your case.
To let this work, you also need to specify the AzureServicesAuthConnectionString environment variable in your app service with RunAs=App, see this link.

Related

I couldn't granting my web app access to Azure Key Vault on Azure App Service Environment V3

I have an Azure Web App and hosted on App Service Environment V3 (Plan: I1v2: 1). After deploying this app I have a problem accessing values on the Azure Key Vault.
When I want to add this app in Access Policy in the Key vault, I couldn't find this app.
I solve this problem, first found ObjectID of App from:
Navigate to the idenity blade of your web app
Set the status to "on"
Select "Save"
Grab the ObjectID when the page refreshes.
Navigate to your principal text box that you have the Web Apps objectID.
After that, with Azure CLI I was granted access to the Key Vault.
More Infromation
Ensure that the Key Vault is accessible on the same VNet as the App Service
Ensure that you've enabled the Managed Identity for the Key Vault

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We have access to the VM on which the application is running.
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You should not access secured resources directly from client code.
https://www.npmjs.com/package/#azure/keyvault-secrets
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https://learn.microsoft.com/en-us/answers/questions/318983/is-it-possible-to-use-key-vault-in-static-web-appl.html

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I have looked at the MS docs and followed a few guides, but have not, as of yet, managed to successfully retrieve my secret.
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Managed identity only works when you host your app in Azure.
This is because it works as a local endpoint inside the Azure instances.

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I can understand its usage in case of VM, but on Azure, WebApp does it add any value.
Azure Web App doesn't rely on Azure Key Vault for any of its functionalities.
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