Tutorial: Grant a user access to Azure resources using Azure PowerShell

  • Article

Azure role-based access control (Azure RBAC) is the way that you manage access to Azure resources. In this tutorial, you grant a user access to view everything in a subscription and manage everything in a resource group using Azure PowerShell.

In this tutorial, you learn how to:

  • Grant access for a user at different scopes
  • List access
  • Remove access

If you don't have an Azure subscription, create a free account before you begin.

Note

We recommend that you use the Azure Az PowerShell module to interact with Azure. To get started, see Install Azure PowerShell. To learn how to migrate to the Az PowerShell module, see Migrate Azure PowerShell from AzureRM to Az.

Prerequisites

To complete this tutorial, you will need:

Role assignments

In Azure RBAC, to grant access, you create a role assignment. A role assignment consists of three elements: security principal, role definition, and scope. Here are the two role assignments you will perform in this tutorial:

Security principal Role definition Scope
User
(RBAC Tutorial User)		 Reader Subscription
User
(RBAC Tutorial User)		 Contributor Resource group
(rbac-tutorial-resource-group)

Role assignments for a user

Create a user

To assign a role, you need a user, group, or service principal. If you don't already have a user, you can create one.

  1. In Azure Cloud Shell, create a password that complies with your password complexity requirements.

    $PasswordProfile = @{ Password = "<Password>" }

  2. Create a new user for your domain using the New-MgUser command.

    New-MgUser -DisplayName "RBAC Tutorial User" -PasswordProfile $PasswordProfile `
   -UserPrincipalName "rbacuser@example.com" -AccountEnabled:$true -MailNickName "rbacuser"

    DisplayName        Id                                   Mail UserPrincipalName
-----------        --                                   ---- -----------------
RBAC Tutorial User aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb      rbacuser@example.com

Create a resource group

You use a resource group to show how to assign a role at a resource group scope.

  1. Get a list of region locations using the Get-AzLocation command.

    Get-AzLocation | select Location

  2. Select a location near you and assign it to a variable.

    $location = "westus"

  3. Create a new resource group using the New-AzResourceGroup command.

    New-AzResourceGroup -Name "rbac-tutorial-resource-group" -Location $location

    ResourceGroupName : rbac-tutorial-resource-group
Location          : westus
ProvisioningState : Succeeded
Tags              :
ResourceId        : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rbac-tutorial-resource-group

Grant access

To grant access for the user, you use the New-AzRoleAssignment command to assign a role. You must specify the security principal, role definition, and scope.

  1. Get the ID of your subscription using the Get-AzSubscription command.

    Get-AzSubscription

    Name     : Pay-As-You-Go
Id       : 00000000-0000-0000-0000-000000000000
TenantId : aaaabbbb-0000-cccc-1111-dddd2222eeee
State    : Enabled

  2. Save the subscription scope in a variable.

    $subScope = "/subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e"

  3. Assign the Reader role to the user at the subscription scope.

    New-AzRoleAssignment -SignInName rbacuser@example.com `
  -RoleDefinitionName "Reader" `
  -Scope $subScope

    RoleAssignmentId   : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/providers/Microsoft.Authorization/roleAssignments/00000000-0000-0000-0000-000000000000
Scope              : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e
DisplayName        : RBAC Tutorial User
SignInName         : rbacuser@example.com
RoleDefinitionName : Reader
RoleDefinitionId   : acdd72a7-3385-48ef-bd42-f606fba81ae7
ObjectId           : aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb
ObjectType         : User
CanDelegate        : False

  4. Assign the Contributor role to the user at the resource group scope.

    New-AzRoleAssignment -SignInName rbacuser@example.com `
  -RoleDefinitionName "Contributor" `
  -ResourceGroupName "rbac-tutorial-resource-group"

    RoleAssignmentId   : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rbac-tutorial-resource-group/providers/Microsoft.Authorization/roleAssignments/00000000-0000-0000-0000-000000000000
Scope              : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rbac-tutorial-resource-group
DisplayName        : RBAC Tutorial User
SignInName         : rbacuser@example.com
RoleDefinitionName : Contributor
RoleDefinitionId   : b24988ac-6180-42a0-ab88-20f7382dd24c
ObjectId           : aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb
ObjectType         : User
CanDelegate        : False

List access

  1. To verify the access for the subscription, use the Get-AzRoleAssignment command to list the role assignments.

    Get-AzRoleAssignment -SignInName rbacuser@example.com -Scope $subScope

    RoleAssignmentId   : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/providers/Microsoft.Authorization/roleAssignments/ffffffff-eeee-dddd-cccc-bbbbbbbbbbb0
Scope              : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e
DisplayName        : RBAC Tutorial User
SignInName         : rbacuser@example.com
RoleDefinitionName : Reader
RoleDefinitionId   : acdd72a7-3385-48ef-bd42-f606fba81ae7
ObjectId           : aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb
ObjectType         : User
CanDelegate        : False

    In the output, you can see that the Reader role has been assigned to the RBAC Tutorial User at the subscription scope.

  2. To verify the access for the resource group, use the Get-AzRoleAssignment command to list the role assignments.

    Get-AzRoleAssignment -SignInName rbacuser@example.com -ResourceGroupName "rbac-tutorial-resource-group"

    RoleAssignmentId   : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rbac-tutorial-resource-group/providers/Microsoft.Authorization/roleAssignments/00000000-0000-0000-0000-000000000000
Scope              : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/resourceGroups/rbac-tutorial-resource-group
DisplayName        : RBAC Tutorial User
SignInName         : rbacuser@example.com
RoleDefinitionName : Contributor
RoleDefinitionId   : b24988ac-6180-42a0-ab88-20f7382dd24c
ObjectId           : aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb
ObjectType         : User
CanDelegate        : False

RoleAssignmentId   : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e/providers/Microsoft.Authorization/roleAssignments/ffffffff-eeee-dddd-cccc-bbbbbbbbbbb0
Scope              : /subscriptions/aaaa0a0a-bb1b-cc2c-dd3d-eeeeee4e4e4e
DisplayName        : RBAC Tutorial User
SignInName         : rbacuser@example.com
RoleDefinitionName : Reader
RoleDefinitionId   : acdd72a7-3385-48ef-bd42-f606fba81ae7
ObjectId           : aaaaaaaa-0000-1111-2222-bbbbbbbbbbbb
ObjectType         : User
CanDelegate        : False

    In the output, you can see that both the Contributor and Reader roles have been assigned to the RBAC Tutorial User. The Contributor role is at the rbac-tutorial-resource-group scope and the Reader role is inherited at the subscription scope.

(Optional) List access using the Azure Portal

  1. To see how the role assignments look in the Azure portal, view the Access control (IAM) blade for the subscription.

    Role assignments for a user at subscription scope

  2. View the Access control (IAM) blade for the resource group.

    Role assignments for a user at resource group scope

Remove access

To remove access for users, groups, and applications, use Remove-AzRoleAssignment to remove a role assignment.

  1. Use the following command to remove the Contributor role assignment for the user at the resource group scope.

    Remove-AzRoleAssignment -SignInName rbacuser@example.com `
  -RoleDefinitionName "Contributor" `
  -ResourceGroupName "rbac-tutorial-resource-group"

  2. Use the following command to remove the Reader role assignment for the user at the subscription scope.

    Remove-AzRoleAssignment -SignInName rbacuser@example.com `
  -RoleDefinitionName "Reader" `
  -Scope $subScope

Clean up resources

To clean up the resources created by this tutorial, delete the resource group and the user.

  1. Delete the resource group using the Remove-AzResourceGroup command.

    Remove-AzResourceGroup -Name "rbac-tutorial-resource-group"

    Confirm
Are you sure you want to remove resource group 'rbac-tutorial-resource-group'
[Y] Yes  [N] No  [S] Suspend  [?] Help (default is "Y"):

  2. When asked to confirm, type Y. It will take a few seconds to delete.

  3. Delete the user using the Remove-MgUser command.

    $User = Get-MgUser -Filter "DisplayName eq 'RBAC Tutorial User'"
Remove-MgUser -UserId $User.Id

Next steps

Assign Azure roles using Azure PowerShell