I have enabled Managed Service Identities on an App Service. However, my WebJobs seem unable to access the keys.
They report:
Tried the following 3 methods to get an access token, but none of them worked.
Parameters: Connectionstring: [No connection string specified], Resource: https://vault.azure.net, Authority: . Exception Message: Tried to get token using Managed Service Identity. Unable to connect to the Managed Service Identity (MSI) endpoint. Please check that you are running on an Azure resource that has MSI setup.
Parameters: Connectionstring: [No connection string specified], Resource: https://vault.azure.net, Authority: https://login.microsoftonline.com/common. Exception Message: Tried to get token using Active Directory Integrated Authentication. Access token could not be acquired. password_required_for_managed_user: Password is required for managed user
Parameters: Connectionstring: [No connection string specified], Resource: https://vault.azure.net, Authority: . Exception Message: Tried to get token using Azure CLI. Access token could not be acquired. 'az' is not recognized as an internal or external command,
Kudo does not show any MSI_ environmental variables.
How is this supposed to work? This is an existing App Service Plan.
The AppAuthentication library leverages an internal endpoint in App Service that receives the tokens on your site's behalf. This endpoint is non-static and therefore is set to an environment variable. After activating MSI for your site through ARM, your site will need to be restarted to get two new Environment Variables set in it:
MSI_ENDPOINT and MSI_SECRET
The presence of these variables are essential to the MSI feature working properly during runtime as the AppAuthentication library uses them to get the authorization token. The error message reflects this:
Exception Message: Tried to get token using Managed Service Identity. Unable to connect to the Managed Service Identity (MSI) endpoint. Please check that you are running on an Azure resource that has MSI setup.
If these variables are absent, you might need to restart the site.
https://learn.microsoft.com/en-us/azure/app-service/app-service-managed-service-identity
If the environment variables are set and you still see the same error, the article above has a code sample showing how to send requests to that endpoint manually.
public static async Task<HttpResponseMessage> GetToken(string resource, string apiversion) {
HttpClient client = new HttpClient();
client.DefaultRequestHeaders.Add("Secret", Environment.GetEnvironmentVariable("MSI_SECRET"));
return await client.GetAsync(String.Format("{0}/?resource={1}&api-version={2}", Environment.GetEnvironmentVariable("MSI_ENDPOINT"), resource, apiversion));
}
I would try that and see what kind of response I get back.
I just solved this issue when trying to use MSI with a Function app, though I already had the environment variables set. I tried restarting multiple times to no success. What I ended up doing was manually turning off MSI for the Function, then re-enabling it. This wasn't ideal, but it worked.
Hope it helps!
I've found out that if you enable MSI and then swap out the slot, the functionality leaves with the slot change. You can re-enable it by switching it off and on again but that will create a new identity in AD and will require you to reset permissions on the key vault for it to work.
Enable the identity and give access to your azure function app in keyvault via access policy.
You can find identity in platform feature tab
These two steps works for me
In my case I had forgotten to add an Access Policy for the application in the Key Vault
Just switched ON the Status like #Sebastian Inones showed.
Than add access policy for KeyVault like
This is resolved the issue!!
For the ones, like my self, wondering how to enable MSI.
My scenario:
I have an App Service already deployed and running for a long time.
In addition, on Azure DevOps I have my Pipeline configured to Auto-Swap my Deployment Slots (Staging/Production). Suddenly, after a normal push, Production starts failing because of the described issue.
So, in order to enable MSI again (I don't know why it has to be re-enabled but I believe this is only a workaround, not a solution, as it should be still enabled in the first place)
Go to your App Service. Then Under Settings --> Identity.
Check the status: In my case, it was off
I have attached an image below to make it easier to follow.
For the folks that will come across these answers, I would like to share my experience.
I got this problem with Azure Synapse pipeline run. Essentially I added access policies properly to the KeyVault, and also I added a LinkedService to the Azure Synapse pointing to my KeyVault.
If I trigger the notebook manually it works, but in the pipeline, it fails.
Initially, I used the following statement:
url = TokenLibrary.getSecret("mykeyvault", "ConnectionString")
Then I added the name of the linked service as a third parameter, and the pipeline was able to leverage that linked service to obtain the MSI token for a Vault.
url = TokenLibrary.getSecret("mykeyvault", "ConnectionString", "AzureKeyVaultLinkedServiceName")
Might be unrelated to your issue but I was getting the same error message.
For me, the issue was using pip3's azure-cli. I was able to fix this issue by using brew packages for both azure-cli and azure-functions-core-tools.
Uninstall pip3 azure-cli
pip3 uninstall azure-cli
Install brew azure-cli
brew update
brew install azure-cli
Double check if the error message ends with:
Please go to Tools->Options->Azure Services Authentication, and re-authenticate the account you want to use.
Related
I'm trying to use DefaultAzureCredentials to authenticate my Azure function against Azure Service Bus. In my azure function azure-func-service-bus, I call to Azure Service Bus
servicebus_client = ServiceBusClient(
fully_qualified_namespace=MY_SERVICE_BUS_NAMESPACE_NAME+".servicebus.windows.net",
credential=DefaultAzureCredential(additionally_allowed_tenants=['*'])
)
I created and pushed Docker container to ACR. When I run the container locally for testing outside of Azure, it does not know what permissions to use.
az acr login --name acr01
docker push acr01.azurecr.io/azure-func-service-bus:v1
docker pull acr01.azurecr.io/azure-func-service-bus:v1
docker run -it --rm -p 8080:80 acr01.azurecr.io/azure-func-service-bus:v1
but got the following error.
DefaultAzureCredential failed to retrieve a token from the included credentials.
Attempted credentials:
EnvironmentCredential: EnvironmentCredential authentication unavailable. Environment variables are not fully configured.
Visit https://aka.ms/azsdk/python/identity/environmentcredential/troubleshoot to troubleshoot.this issue.
ManagedIdentityCredential: ManagedIdentityCredential authentication unavailable, no response from the IMDS endpoint.
SharedTokenCacheCredential: SharedTokenCacheCredential authentication unavailable. No accounts were found in the cache.
VisualStudioCodeCredential: Failed to get Azure user details from Visual Studio Code.
AzureCliCredential: Azure CLI not found on path
AzurePowerShellCredential: PowerShell is not installed
To mitigate this issue, please refer to the troubleshooting guidelines here at https://aka.ms/azsdk/python/identity/defaultazurecredential/troubleshoot.
Unexpected error occurred (ClientAuthenticationError('DefaultAzureCredential failed to retrieve a token from the included credentials.\nAttempted credentials:\n\tEnvironmentCredential: EnvironmentCredential authentication unavailable. Environment variables are not fully configured.\nVisit https://aka.ms/azsdk/python/identity/environmentcredential/troubleshoot to troubleshoot.this issue.\n\tManagedIdentityCredential: ManagedIdentityCredential authentication unavailable, no response from the IMDS endpoint.\n\tSharedTokenCacheCredential: SharedTokenCacheCredential authentication unavailable. No accounts were found in the cache.\n\tVisualStudioCodeCredential: Failed to get Azure user details from Visual Studio Code.\n\tAzureCliCredential: Azure CLI not found on path\n\tAzurePowerShellCredential: PowerShell is not installed\nTo mitigate this issue, please refer to the troubleshooting guidelines here at https://aka.ms/azsdk/python/identity/defaultazurecredential/troubleshoot.')). Handler shutting down.
I'm missing a key piece of the puzzle. How can I handle this?
When the Azure Function runs in Azure, it's configured to support ManagedIdentityCredential. For your case I'd recommend trying to configure EnvironmentCredential to test locally.
You can find the details in the link, but the short version is:
Create a service principle (Docs) and give it the needed access
Run the container with extra Environment Variables:
AZURE_TENANT_ID: service principal's Tenant ID
AZURE_CLIENT_ID: service principal's AppId
AZURE_CLIENT_SECRET: service principle's password
I'd recommend using a .env file to make this easier, but be sure it doesn't get checked in anywhere.
FYI If your account doesn't use MFA, you can instead use the variables AZURE_USERNAME and AZURE_PASSWORD. But then you've put your username and password in a file or your terminal history which is concerning. Admittedly the service principal has the same problem, but you can more easily mitigate that with minimizing it's access and regularly rolling the secret.
P.S. If you're using Visual Studio for making your Azure Function you should be able to use something like: EnvironmentCredentialExample to automate setting up and using the needed .env file.
I'm trying to set up a new app slot for my azure website.
Here is my error:
I've looked at a few articles online and then made sure the app slot was using System assigned identities.
But I still get the above error?
What am I missing?
Here is what it looks like on the Configuration section
Make sure you have done the steps below, then it should work.
1.After enabling the system-assigned identity(MSI) of your slot, navigate to your keyvault in the portal -> Access policies -> add the MSI of your slot to the access policy with the correct secret permission, just search for your web app name, the MSI of the slot has the format as webappname/slots/slotname, details here.
2.If you use the SecretUri, the format of the connection string in your slot should be like below, double-check it.
#Microsoft.KeyVault(SecretUri=https://joykeyvault123.vault.azure.net/secrets/encryptionKey/492c7788a9da421c8b9752ef18b53f5d)
You could get the SecretUri in your secret in the portal.
It works fine on my side.
I have configured my WebAPI to get Azure Storage connection string out of Azure KeyVault using Managed Identity.
For that, I have created an Azure AD dedicated user, which is given permission to get/list secrets from Azure KeyVault. I then assigned this user to my AZURE_USERNAME environment variable and I have configured Visual Studio to use this account.
It all works fine as long as I run the WebAPI in IIS Express when I debug from Visual Studio. However I want to run the WebApi from my local IIS when I debug in Visuall Studio.
What am I missing here ? I suspect it is because local IIS does not run with the configured user above, but what would be the workaround ?
The error I get is
AzureServiceTokenProviderException: Parameters: Connection String: [No connection string specified], Resource: https://vault.azure.net, Authority: https://login.windows.net/some_id. Exception Message: Tried the following 3 methods to get an access token, but none of them worked.
In the end I created a dedicated service principal in azure ad which is then added to my applications's users. This service principal is referenced by the environment variable on the dev machine.
I have made progress on this and it is now working in local IIS but...
to make it work, I added the following environment variables:
as documented here
However it means this only works for ONE Service Principal at a time. What if I want all of my local WebApi running at the same time (which is the case) in the local IIS. How can I handle that with DefaultAzureCredential ?
Another solution is to create an AzureServiceTokenProvider instance by passing a connection string parameter that will specify the tenant and application secret.
var azureServiceTokenProvider = new AzureServiceTokenProvider("RunAs=App;AppId=2ad1fe1f-d93f-4973-a1e5-e7019638b90a;TenantId=your-tenant-here.onmicrosoft.com;AppKey=your-app-secret-here");
In such a way there is no more need to use the environment variables.
Check it here
I was trying to get the connection string from the azure key vault for azure functions. These are the steps I did,
Created a managed identity(System assigned) in the azure functions
Create a secret in an azure key vault
Add access policies to give permission to the azure function app
Added an entry in the app settings for connection string where the value was #Microsoft.KeyVault(SecretUri=SECRETURLOFKEYVAULT)
But when I run the azure function I am getting below error,
"Keyword not supported: #microsoft.keyvault(secreturi....."
This is how I have enabled managed identity,
And my access policy looks like below,
Any help would be much appreciated
I ran into a similar problem by following the tutorial. My remedy was a restart of the function app. Saving of the app setting was not enough for the Function App to start using the Key Vault secret provider correctly.
According to the steps you provided, it have no problem to work well. Here is the tutorial about get key vault secrets in Azure Function you could refer to.
Note: Add access policies to the azure function app with the Get permission on secrets and that was enough.
Also, here is a similar issue that get same error like you which is due to IP Address restriction blocking it.
This issue occurred while testing on local. It was resolved after doing an az login.
I'm sitting in a project where I will move from TFS to VSTS so we do have a working release definition.
But when I try deploying a service fabric cluster i get the following error:
2018-08-28T09:02:59.8922249Z ##[error]An error occurred attempting to acquire an Azure Active Directory token. Ensure that your service endpoint is configured properly with valid credentials. Error message: Exception calling "AcquireToken" with "3" argument(s): "AADSTS50079: Due to a configuration change made by your administrator, or because you moved to a new location, you must enroll in multi-factor authentication to access '< service principle Id >'.
Trace ID: < guid1 is here >
Correlation ID: < guid2 is here >
Then I go to the azure portal -> AAD -> Sign In -> look up my specific sign in (based on correlation Id) and there it state that Sign-in status is Success
Considering this works for our TFS instance i assume the service principle is correctly set up. But since the build/deploy agents is now on a VM in azure instead of on prem for TFS, is there anything i need to change?
Traffic should be OK, i can navigate to the https-adress to the cluster from the VM with agents.
I've tried google it, but to no success so hopefully someone can point me to the right direction where to look.
And in portal, 'MFA is required' is no, so multi factor should not be neccesary.
Just try using certificate based authentication instead of using AAD Authentication in the service endpoint configuration.
Reference the same issue here: https://github.com/Microsoft/vsts-tasks/issues/7714
If that still not work, just try to create a new endpoint, then try it again.