How do you Connect Databricks with Storage Account


How do you Connect Databricks with Storage Account

You can connect Databricks to your Azure Storage Account using a few different methods, each with varying levels of security and flexibility:

Recommended Methods:

  1. OAuth 2.0 with a Microsoft Entra ID (Azure Active Directory) Service Principal is the most secure and recommended method. It involves creating a service principal in your Azure Active Directory and permitting it to access your storage account. Databricks then uses this service principle to authenticate and access the data.
  2. Shared Access Signature (SAS) Token: SAS tokens provide granular, time-limited access to specific resources within your storage account. You can generate a SAS token with particular permissions and share it with Databricks for restricted access.

Less Secure Method (Not Recommended):

  1. Account Access Keys: While you can use your storage account access keys for connection, this is the least secure option. Account keys provide full access to your storage account, so using them directly in Databricks could expose your data to unnecessary risks.

Here’s a general outline of the steps involved in connecting Databricks to your storage account using a service principal:

  1. Create a Service Principal:
    • In Azure Active Directory, create a service principal and assign it a role with the necessary permissions to access your storage account (e.g., Storage Blob Data Contributor).
  2. Configure Databricks:
    • In Databricks, go to the “Compute” section and create a cluster.
    • Under “Advanced Options,” go to the “Spark Config” tab in the cluster configuration.
    • Add the following Spark configuration properties, replacing the placeholders with your actual values:
    •<storage-account-name> oauth
    •<storage-account-name> org.apache.hadoop.fs.azurebfs.oauth2.ClientCredsTokenProvider
    •<storage-account-name> <application-id>
    •<storage-account-name> <password>
  3. Access Your Data:
    • You can now use standard Spark APIs (e.g.,“CSV”).load) to read and write data from/to your storage account in Databricks notebooks.

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