userAssignedIdentities for ImageBuilder vm not available via PowerShell

[paul-e-martin]

Description

Deploying a new Image Builder template via PowerShell doesn't allow the addition of userAssignedIdentities to the VM. the option is in the json template, but gets removed when its deserialized. The same template works as expected via the Azure CLI.

Issue script & Debug output

# Build template

# Destination image resource group name
$imageResourceGroup = ''
$identityName = ''
$myGalleryName = ''
$imageDefName = ''
$Version = '1.0.0'

# Azure region
$location = 'uksouth'

# Name of the image to be created
$Date = Get-Date
$imageTemplateName = "myWinImage_" + $date.ToShortDateString().Replace("/", "-") + "_" + $Date.ToShortTimeString().Replace(":", "-")

# Distribution properties of the managed image upon completion
$runOutputName = 'DistResults'

# Your Azure Subscription ID
$subscriptionID = (Get-AzContext).Subscription.Id

# Get Identity 
$identityNameResourceId = (Get-AzUserAssignedIdentity -ResourceGroupName $imageResourceGroup -Name $identityName).Id

#Gen 2
#VM Size
$vmSize = "Standard_D2s_v4"

# Image Template - Windows 11 AVD

$srcObjParams = @{
    SourceTypePlatformImage = $true
    Publisher               = 'MicrosoftWindowsDesktop'
    Offer                   = 'Windows-11'
    Sku                     = 'win11-21h2-avd'
    Version                 = 'latest'
}
$srcObj = New-AzImageBuilderSourceObject @SrcObjParams

# Distribution Settings
$disObjParams = @{
    SharedImageDistributor = $true
    ArtifactTag            = @{tag = 'dis-share' }
    GalleryImageId         = "/subscriptions/$subscriptionID/resourceGroups/$imageResourceGroup/providers/Microsoft.Compute/galleries/$myGalleryName/images/$imageDefName/Versions/$Version"
    ReplicationRegion      = $location
    RunOutputName          = $runOutputName
    ExcludeFromLatest      = $false
}
$disObj = New-AzImageBuilderDistributorObject @disObjParams

# Fix Sysprep
$SysprepParams = @{
    PowerShellCustomizer = $true
    CustomizerName       = 'SysprepFix'
    RunElevated          = $true
    runAsSystem          = $true
    Inline               = @("((Get-Content -path C:\DeprovisioningScript.ps1 -Raw) -replace 'Sysprep.exe /oobe /generalize /quiet /quit', 'Sysprep.exe /oobe /generalize /quit /mode:vm' ) | Set-Content -Path C:\DeprovisioningScript.ps1")
}
$CustomizerSysPrep = New-AzImageBuilderCustomizerObject @SysprepParams

# Set array of Customerizers
$customizers = $CustomizerSysprep,

#Image Template Properties
$ImgTemplateProperties = @{
    Source                = $srcObj
    Distribute            = $disObj
    Customize             = $customizers
    buildTimeoutInMinutes = 240
    VMProfile  = @{    
        VMProfileVmSize        = $vmSize
        userAssignedIdentities = @(
            $identityNameResourceId
        )
    }
}

# Image Template Parameters
$ImgTemplateParams = @{
    type       = "Microsoft.VirtualMachineImages/imageTemplates"
    apiVersion = "2021-10-01"
    Properties = $ImgTemplateProperties
    Location   = $location
    Identity   = @{
        type                   = "UserAssigned"
        userAssignedIdentities = @{
            $identityNameResourceId = @{}
        }
    }
}

# Remove Plan information
$content = $ImgTemplateParams | ConvertTo-Json -Depth 16 
$content = $content -replace '"PlanInfoPlanName":.*,', ''   
$content = $content -replace '"PlanInfoPlanProduct":.*,', ''  
$content = $content -replace '"PlanInfoPlanPublisher":.*,', ''
$content | Out-File .\Template.json -Force

# Build Template
New-AzImageBuilderTemplate -ImageTemplateName $imageTemplateName -ResourceGroupName $imageResourceGroup -JsonTemplatePath .\Template.json

Remove-Item .\Template.json -Force

# Build Image from Template
Start-AzImageBuilderTemplate -ResourceGroupName $imageResourceGroup -Name $imageTemplateName -NoWait

Environment data

7.2.4

Module versions

0.2.0

Error output

No response

[ghost]

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