Can I configure SAS tokens for multiple storage containers from the same account in the same Spark session

Question

The documentation here (https://learn.microsoft.com/en-us/azure/databricks/external-data/azure-storage#access-azure-data-lake-storage-gen2-or-blob-storage-using-a-sas-token) indicates that it is possible to configure multiple SAS tokens via the following statement:

"You can configure SAS tokens for multiple storage accounts in the same Spark session."

What I would like to know is whether it is possible to configure SAS tokens for multiple containers, since SAS tokens provide granular access on that level?

Answer 1

Hello @Bulukani Mlalazi ,

Thanks for the question and using MS Q&A platform.

Yes, it is certainly possible to configure SAS tokens for mulitple containers. You can create as many SAS tokens as you would like by using different combinations of permissions, expiry time and source IP address.

The SAS token is a string that you generate on the client side, for example by using one of the Azure Storage client libraries. The SAS token is not tracked by Azure Storage in any way. You can create an unlimited number of SAS tokens on the client side. After you create a SAS, you can distribute it to client applications that require access to resources in your storage account.

Client applications provide the SAS URI to Azure Storage as part of a request. Then, the service checks the SAS parameters and the signature to verify that it is valid. If the service verifies that the signature is valid, then the request is authorized. Otherwise, the request is declined with error code 403 (Forbidden).

Here's an example of a service SAS URI, showing the resource URI and the SAS token. Because the SAS token comprises the URI query string, the resource URI must be followed first by a question mark, and then by the SAS token:

Fore more details, refer to Grant limited access to Azure Storage resources using shared access signatures (SAS).

Hope this will help. Please let us know if any further queries.

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