Federated Identity credentials auth in azure table sdk

Question

Hi
I was trying to use FIC creds for table sdk but was getting the following issue:

CredentialUnavailableError: ManagedIdentityCredential authentication unavailable, no response from the IMDS endpoint.

This is the doc I am following for FIC credential setup(Python code): https://learn.microsoft.com/en-us/identity/microsoft-identity-platform/federated-identity-credentials?branch=main&tabs=python#library-api

And this link as reference to provide credentials to table sdk:

https://learn.microsoft.com/en-us/python/api/overview/azure/data-tables-readme?view=azure-python#getting-started

As FIC is not mentioned in table sdk doc, I am getting the credentials using first doc and the using those credentials using second doc as reference.

And this python code is being used in a synapse notebook.

What could be the reason for this error? Is it that FIC is not supported or something else?

Answer

This issue is common in environments where IMDS is not available, such as in local development environments or when the managed identity is not properly configured or supported.

Since FIC might not be directly supported in the Azure Table SDK documentation, you can use the DefaultAzureCredential which supports various authentication methods, including managed identity and Azure AD tokens.

Check this resource for more information and how to configure your local environment: https://learn.microsoft.com/en-us/azure/developer/python/configure-local-development-environment

You can see the list of credential types that DefaultAzureCredential() goes through in the Azure docs.

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