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To move data from an Azure VM to a Storage Account without using SAS tokens, you can leverage Azure Managed Identity or Azure AD authentication. These methods eliminate the need for SAS tokens and provide secure, identity-based access to your storage resources. Here's how you can do it:
Option 1: Use Managed Identity
- Enable Managed Identity for the VM:
- In the Azure Portal, go to your VM's settings.
- Under the "Identity" section, enable the System-Assigned Managed Identity.
- Assign Role to the VM:
- In the Storage Account, go to Access Control (IAM).
- Assign the "Storage Blob Data Contributor" role to the VM's managed identity. This role provides permissions to read/write to blob storage.
- Mount the Storage Account Using Azure CLI or SDK:
- Install the Azure CLI on your VM (if not already installed).
- Use azcopy or a script to copy files to the storage account, authenticating via the managed identity. Example:
- Install the Azure CLI on your VM (if not already installed).
- In the Storage Account, go to Access Control (IAM).
- In the Azure Portal, go to your VM's settings.
azcopy copy "/path/to/local/files" "https://<storage-account-name>.blob.core.windows.net/<container-name>" --recursive
Option 2: Azure AD Authentication with Storage SDKs
- Configure Azure AD Authentication:
- Follow the steps above to enable Managed Identity and assign roles.
- Use the Azure SDK for Python, .NET, or any other supported language to authenticate using Azure AD. For example, in Python:
- Follow the steps above to enable Managed Identity and assign roles.
from azure.identity import DefaultAzureCredential from azure.storage.blob import BlobServiceClient credential = DefaultAzureCredential() blob_service_client = BlobServiceClient(account_url="https://<storage-account-name>.blob.core.windows.net", credential=credential) container_client = blob_service_client.get_container_client("<container-name>") blob_client = container_client.get_blob_client("example.txt") with open("example.txt", "rb") as data: blob_client.upload_blob(data)
Benefits of Managed Identity and Azure AD Authentication:
- No Tokens: Avoid the complexity and security risks of managing SAS tokens.
- Granular Permissions: Use Azure Role-Based Access Control (RBAC) to assign specific permissions.
- Secure and Scalable: Authentication and authorization are handled securely by Azure.
Common Tools for File Transfer:
- Azure CLI: Use az storage blob upload commands with managed identity authentication.
- AzCopy: Use for efficient and scalable file transfers.
- Azure File Share with SMB: If you need a mounted drive, you can authenticate with Azure AD.
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