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// roles/azure · storage

Storage Blob Data OwnerAzure built-in role

Allows for full access to Azure Storage blob containers and data, including assigning POSIX access control.

Role IDb7e6dc6d-f1e8-4753-8033-0f276bb0955b
CategoryStorage
Actions2
Data actions1

Before you assign it

  • It reaches the data, not just the resource. It has 1 data action, such as reading blobs, secrets or messages.

What it can do

PermissionWhat it allows
Microsoft.Storage/storageAccounts/blobServices/containers/*Every operation under Microsoft.Storage/storageAccounts/blobServices/containers
Microsoft.Storage/storageAccounts/blobServices/generateUserDelegationKey/actionReturns a user delegation key for the blob service

Data actions

PermissionWhat it allows
Microsoft.Storage/storageAccounts/blobServices/containers/blobs/*Every operation under Microsoft.Storage/storageAccounts/blobServices/containers/blobs

Assign it

Scope it as tightly as you can: a resource or resource group rather than the whole subscription.

azure cli
az role assignment create \
  --assignee "jane.doe@contoso.com" \
  --role "Storage Blob Data Owner" \
  --scope "/subscriptions/<subscription id>/resourceGroups/<resource group>"
powershell3 lines
New-AzRoleAssignment -SignInName "jane.doe@contoso.com" `
  -RoleDefinitionName "Storage Blob Data Owner" `
  -Scope "/subscriptions/<subscription id>/resourceGroups/<resource group>"
bicep7 lines
resource assignment 'Microsoft.Authorization/roleAssignments@2022-04-01' = {
  name: guid(resourceGroup().id, principalId, 'b7e6dc6d-f1e8-4753-8033-0f276bb0955b')
  properties: {
    roleDefinitionId: subscriptionResourceId('Microsoft.Authorization/roleDefinitions', 'b7e6dc6d-f1e8-4753-8033-0f276bb0955b')
    principalId: principalId
  }
}

Who already has it?

kql · azure resource graph
authorizationresources
| where type == "microsoft.authorization/roleassignments"
| where tostring(properties.roleDefinitionId) endswith "b7e6dc6d-f1e8-4753-8033-0f276bb0955b"
| project principalId = tostring(properties.principalId), principalType = tostring(properties.principalType), scope = tostring(properties.scope)

Other storage roles

Find the smallest role for a task →

Sources