I have noticed on a few occasions that for a tenant subscription hosted in an Azure Stack region that I am either unable to view the IAM permissions, or add a user/service principal/group for the subscription. I have needed to do this to assign a service principal as a contributor to a subscription so that I can deploy a Kubernetes cluster via AKSE.

Typically for viewing the permissions, clicking on the Refresh button does the trick. More problematic is adding permissions via the portal. Doing so renders a screen like below:

As highlighted, the animated ‘dots’ show the blade constantly trying to retrieve the data but can’t. It is actually a known issue and is highlighted in the release notes.

The remediation it offers is to use PowerShell to verify the permissions, and gives a link to the Get-AzureRmRoleAssignment CmdLet. Not helpful if you want to set permissions, so here’s a step-by-step description of what you’ll need to do.

Pre-Reqs:

Your user account is the owner of the subscriptions when they were set up.
You have the correct PowerShell for Azure Stack Hub installed

For the example shown, I am using Azure AD identities, I have more than one tenant subscription assigned to my user account and I am adding a service principal. At the end of the post, I will show the commands for adding a group or a user .

Step-By-Step

From PowerShell, connect to the tenant subscription you want to change the permissions on. The documentation is for connecting as an operator, so here’s how to do it as a user:

$Region = '<yourRegion>'
$FQDN = '<yourFQDN>'
$AADTenantName = '<yourAADTenantName>'
$envName = "AzureStack$region" 

 # Register an Azure Resource Manager environment that targets your Azure Stack instance. Get your Azure Resource Manager endpoint value from your service provider.
Add-AzureRMEnvironment -Name $envName -ArmEndpoint "https://management.$Region.$FQDN" `
    -AzureKeyVaultDnsSuffix vault.$Region.$FQDN `
    -AzureKeyVaultServiceEndpointResourceId https://vault.$Region.$FQDN

# Set your tenant name.
$AuthEndpoint = (Get-AzureRmEnvironment -Name $envName).ActiveDirectoryAuthority.TrimEnd('/')
$TenantId = (invoke-restmethod "$($AuthEndpoint)/$($AADTenantName)/.well-known/openid-configuration").issuer.TrimEnd('/').Split('/')[-1]

# After signing in to your environment, Azure Stack cmdlets
# can be easily targeted at your Azure Stack instance.
Add-AzureRmAccount -EnvironmentName $envName -TenantId $TenantId

As I have more than one subscription, let’s get a list so we can select the correct one:

Get-AzureRmSubscription | ft Name

I got the following output:

I want to modify the AKSTest subscription:

#Set the context
$ctx = set-azurermcontext -Subscription AKSTest
$ctx

Running that command, I get :

Cool; I’ve got the correct subscription now, so let’s list the permissions assigned to it:

Get-AzureRmRoleAssignment

OK, so those are the standard permissions assigned when the subscription is created. Let’s add a service principal.

First, let’s get the service principal object

Get-AzureRmADServicePrincipal | ? {$_.DisplayName -like '*something*'} |ft DisplayName

I want to assign AKSEngineDemo

$spn = Get-AzureRmADServicePrincipal -SearchString AKSEngineDemo

Lets assign the service principal to the tenant subscription:

New-AzureRmRoleAssignment -ObjectId $spn.Id -RoleDefinitionName Contributor -scope "/subscriptions/$($ctx.Subscription.Id)"

When I take a look in the portal now (after doing a refresh :) ), I see the following:

Here’s the commands for adding an Azure AD User:

#Find the User object you want to add
Get-AzureRmADUser | ? {$_.DisplayName -like '*something*'} |ft DisplayName

#Assign the object using the displayname of the user
$ADUser = Get-AzureRmADUser -SearchString <UserName>
New-AzureRmRoleAssignment -ObjectId $ADUser.Id -RoleDefinitionName Contributor -scope "/subscriptions/$($ctx.Subscription.Id)"

Finally, how to add an Azure AD Group:

#Find the Group object you want to add
Get-AzureRmADGroup | ? {$_.DisplayName -like '*something*'} |ft DisplayName

#Assign the object using the displayname of the user
$ADGroup = Get-AzureRmADGroup -SearchString <GroupName>
New-AzureRmRoleAssignment -ObjectId $ADGroup.Id -RoleDefinitionName Contributor -scope "/subscriptions/$($ctx.Subscription.Id)"