azurerm_orchestrated_virtual_machine_scale_set support for additional_unattend_content

[gibbcode]

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Description

Both azurerm_windows_virtual_machine and azurerm_windows_virtual_machine_scale_set offer the option to specify additional_unattend_content.

This option is available in ARM for flexible VMSS azurerm_orchestrated_virtual_machine_scale_set, but is not available in Terraform.

This prevents consumers from executing custom_data after a VM build.

New or Affected Resource(s)/Data Source(s)

azurerm_orchestrated_virtual_machine_scale_set

Potential Terraform Configuration

resource "azurerm_orchestrated_virtual_machine_scale_set" "vmss" {
  resource_group_name         = azurerm_resource_group.rg.name
  name                        = var.name
  location                    = var.location
  instances                   = var.vmss_instances
  tags                        = local.tags

  os_profile {
    custom_data = base64encode(module.rds-init.rendered)
    windows_configuration {
      admin_username           = "azureuser"
      admin_password           = sensitive(data.azurerm_key_vault_secret.admin-password.value)
      computer_name_prefix     = substr(var.name,0,9)
      additional_unattend_content {
         content = var.content
         setting = var.setting
      }
    }
  }

References

Param available in azurerm_windows_virtual_machine and azurerm_windows_virtual_machine_scale_set

But not in azurerm_orchestrated_virtual_machine_scale_set

[rcskosir]

Thank you for taking the time to open this issue. Please subscribe to PR #24292 created by @harshavmb for this issue.

[harshavmb]

Hi @gibbcode ,

Unfortunately, I couldn't get this working! I am having problems with Autounattend.xml. I tried with several contents, all I get is below error which doesn't tell much. I doubt it's even supported by azure API as I see several comments here. I have had similar experience with flex orchestration APIs not having all feature support like uniform mode.

In case if you have a working xml, please share with me. Have you tested with by other means like az-cli/restapi? I couldn't test this via portal as no option was offered.

Error: waiting for creation of Orchestrated Virtual Machine Scale Set (Subscription: "b500a058-6396-45db-a15d-3f31913e84a5"
│ Resource Group Name: "factory-01"
│ Virtual Machine Scale Set Name: "acctestOVMSS-01"): Code="OSProvisioningInternalError" Message="OS Provisioning failed for VM 'acctestOVMSS-01_9cec32de' due to an internal error." Target="acctestOVMSS-01_9cec32de"

[harshavmb]

No problem, I got it working with below configuration..

additional_unattend_content {        
        setting = "FirstLogonCommands"
        content = "<FirstLogonCommands><SynchronousCommand><CommandLine>shutdown /r /t 0 /c \"initial reboot\"</CommandLine><Description>reboot</Description><Order>1</Order></SynchronousCommand></FirstLogonCommands>"        
}

[github-actions]

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