I am preparing VM deployment, and on VMs, I need to run some Powershell command lets. I need to change the Postgresql property.
I am working on Azure cloud, Terraform deployment has been tested, and works as expected, VM is deployed with all required configurations, but facing some problems with PowerShell commands. I use terraform resource azurerm_virtual_machine_extension, it works when I am trying to install/use one block of code, for example

  name                 = "start_postgresql"
  virtual_machine_id   = azurerm_windows_virtual_machine.virtual_machine.id
  publisher            = "Microsoft.Compute"
  type                 = "CustomScriptExtension"
  type_handler_version = "1.9"

  settings = <<SETTINGS
 {
  "commandToExecute": "powershell -ExecutionPolicy Unrestricted Start-Service -Name postgresql-x64-16"
 }
SETTINGS
}

I don’t want to use storage account and container and .ps1 script file uploaded to storage container, I need to use inline powershell code. My powershell file and terraform clode below.

param (
    [string]$VMUser,
    [string]$VMPassword,
    [string]$VMName
)

$account=".$VMUser"
$password= "$VMPassword"
$service="name='postgresql-x64-16'"

$svc=Get-WmiObject win32_service -ComputerName "$VMName" -filter $service
$svc.StopService()
$svc.change($null,$null,$null,$null,$null,$null,$account,$password,$null,$null,$null)
$svc.StartService()

  name                 = "start_and_change_postgresql"
  virtual_machine_id   = azurerm_windows_virtual_machine.virtual_machine.id
  publisher            = "Microsoft.Compute"
  type                 = "CustomScriptExtension"
  type_handler_version = "1.9"

  settings = <<SETTINGS
    {
      "commandToExecute": "powershell -Command \"param([string]`\$VMUser, [string]`\$VMPassword, [string]`\$VMName); `\$account = '.\\' + `\$VMUser; `\$password = `\$VMPassword; `\$service = 'name=\\'postgresql-x64-16\\''; `\$svc = Get-WmiObject win32_service -ComputerName `\$VMName -filter `\$service; `\$svc.StopService(); `\$svc.change($null,$null,$null,$null,$null,$null,`\$account,`\$password,$null,$null,$null); `\$svc.StartService();\" -VMUser '${var.vm_user}' -VMPassword '${var.vm_password}' -VMName '${azurerm_windows_virtual_machine.virtual_machine.computer_name}'"
    }
  SETTINGS
}

Appreciated for for all your assistance.