Terraform GCP - Arguments 传入 windows-startup-script-ps1

Question

In Terraform for GCP VM provision, I need to Run PowerShell script for disk partition as a startup. It requires 2 arguments as array for DriveName & DriveLetters.

    windows-startup-script-ps1 = "${file("disk.ps1") ('Logs','Files') ('M','S')"

it doesn't work, can you help how to give arguments to Powershell in Terraform startup script for VM provision.

Thanks.

Answer 1

As the public documentation from GCP about startup scripts on Windows VM the metadata keys that can be used for the disk partition needs to be the correct as the following, you need to compare if is need it to execute a command or a script.

To declare the metadata in the main.tf file can be used the next block as an example.

  metadata = {
    windows-startup-script-cmd = <<-EOF
      "$${file("disk.ps1") ('Logs','Files') ('M','S')"
    EOF
  }

This is an argument inside the google_compute_instance block.

Multiline strings can use shell-style "here doc" syntaxin terraform, with the string starting with a marker like <<-EOF and then the string ending with EOF on a line of its own.