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Add or edit Azure role assignment conditions using Azure CLI

  • บทความ

An Azure role assignment condition is an additional check that you can optionally add to your role assignment to provide more fine-grained access control. For example, you can add a condition that requires an object to have a specific tag to read the object. This article describes how to add, edit, list, or delete conditions for your role assignments using Azure CLI.

Prerequisites

For information about the prerequisites to add or edit role assignment conditions, see Conditions prerequisites.

Add a condition

To add a role assignment condition, use az role assignment create. The az role assignment create command includes the following parameters related to conditions.

Parameter Type Description
condition String Condition under which the user can be granted permission.
condition-version String Version of the condition syntax. If --condition is specified without --condition-version, the version is set to the default value of 2.0.

The following example shows how to assign the Storage Blob Data Reader role with a condition. The condition checks whether container name equals 'blobs-example-container'.

az role assignment create --role "Storage Blob Data Reader" --scope /subscriptions/mySubscriptionID/resourceGroups/myResourceGroupName --assignee "user1@contoso.com" \
--description "Read access if container name equals blobs-example-container" \
--condition "((!(ActionMatches{'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read'})) OR (@Resource[Microsoft.Storage/storageAccounts/blobServices/containers:name] StringEquals 'blobs-example-container'))" \
--condition-version "2.0"

The following shows an example of the output:

{
    "canDelegate": null,
    "condition": "((!(ActionMatches{'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read'})) OR (@Resource[Microsoft.Storage/storageAccounts/blobServices/containers:name] StringEquals 'blobs-example-container'))",
    "conditionVersion": "2.0",
    "description": "Read access if container name equals blobs-example-container",
    "id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentId}",
    "name": "{roleAssignmentId}",
    "principalId": "{userObjectId}",
    "principalType": "User",
    "resourceGroup": "{resourceGroup}",
    "roleDefinitionId": "/subscriptions/{subscriptionId}/providers/Microsoft.Authorization/roleDefinitions/2a2b9908-6ea1-4ae2-8e65-a410df84e7d1",
    "scope": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}",
    "type": "Microsoft.Authorization/roleAssignments"
}

Edit a condition

To edit an existing role assignment condition, use az role assignment update and a JSON file as input. The following shows an example JSON file where condition and description are updated. Only the condition, conditionVersion, and description properties can be edited. You must specify all the properties to update the role assignment condition.

{
    "canDelegate": null,
    "condition": "((!(ActionMatches{'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read'})) OR (@Resource[Microsoft.Storage/storageAccounts/blobServices/containers:name] StringEquals 'blobs-example-container' OR @Resource[Microsoft.Storage/storageAccounts/blobServices/containers:name] StringEquals 'blobs-example-container2'))",
    "conditionVersion": "2.0",
    "description": "Read access if container name equals blobs-example-container or blobs-example-container2",
    "id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentId}",
    "name": "{roleAssignmentId}",
    "principalId": "{userObjectId}",
    "principalType": "User",
    "resourceGroup": "{resourceGroup}",
    "roleDefinitionId": "/subscriptions/{subscriptionId}/providers/Microsoft.Authorization/roleDefinitions/2a2b9908-6ea1-4ae2-8e65-a410df84e7d1",
    "scope": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}",
    "type": "Microsoft.Authorization/roleAssignments"
}

Use az role assignment update to update the condition for the role assignment.

az role assignment update --role-assignment "./path/roleassignment.json"

The following shows an example of the output:

{
    "canDelegate": null,
    "condition": "((!(ActionMatches{'Microsoft.Storage/storageAccounts/blobServices/containers/blobs/read'})) OR (@Resource[Microsoft.Storage/storageAccounts/blobServices/containers:name] StringEquals 'blobs-example-container' OR @Resource[Microsoft.Storage/storageAccounts/blobServices/containers:name] StringEquals 'blobs-example-container2'))",
    "conditionVersion": "2.0",
    "description": "Read access if container name equals blobs-example-container or blobs-example-container2",
    "id": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}/providers/Microsoft.Authorization/roleAssignments/{roleAssignmentId}",
    "name": "{roleAssignmentId}",
    "principalId": "{userObjectId}",
    "principalType": "User",
    "resourceGroup": "{resourceGroup}",
    "roleDefinitionId": "/subscriptions/{subscriptionId}/providers/Microsoft.Authorization/roleDefinitions/2a2b9908-6ea1-4ae2-8e65-a410df84e7d1",
    "scope": "/subscriptions/{subscriptionId}/resourceGroups/{resourceGroup}",
    "type": "Microsoft.Authorization/roleAssignments"
}

List a condition

To list a role assignment condition, use az role assignment list. For more information, see List Azure role assignments using Azure CLI.

Delete a condition

To delete a role assignment condition, edit the role assignment condition and set both the condition and condition-version properties to either an empty string ("") or null.

Alternatively, if you want to delete both the role assignment and the condition, you can use the az role assignment delete command. For more information, see Remove Azure role assignments.

Next steps