Unable to map Azure file share

Packer
1

I’ve been trying for days to figure out how to get an Azure file share mapped to the VM being built by packer. Everything I’ve found points to using New-PSDrive, but that has continued to fail.

This is, among many other things, what I’ve recently tried:

provisioner "powershell" {
    inline = [
      "cmd.exe /C \"cmdkey /add:`\"<storage_account>.file.core.windows.net`\" /user:`\"localhost\\<storage_account>`\" /pass:`\"<access_key>`\"\"",
      "New-PSDrive -Name F -PSProvider FileSystem -Root \\\\<storage_account>.file.core.windows.net\\fileshare -Persist -Scope Global"
    ]
  }

No matter what I’ve attempted, I get

CMDKEY: Credentials cannot be saved from this logon session.

and

New-PSDrive : The network resource type is not correct

These commands work when I execute them locally in either Powershell 5.x or Powershell Core 7.x.

I’ve also tried defining credentials to pass to the New-PSDrive cmdlet. That also hasn’t worked.

2

I found my solution. I never got anything working with cmd.exe. Instead, I sent the storage account key through ConvertTo-SecureString and then created a System.Management.Automation.PSCredential object:

  provisioner "powershell" {
    # Continue configuration after restart  
    inline = [
      # Use the storage account variables to map the file share
      "$securePass = \"${var.storage_account_key}\" | ConvertTo-SecureString -AsPlainText -Force",
      "$creds = New-Object -TypeName System.Management.Automation.PSCredential -ArgumentList \"${var.storage_account_name}\",$securePass",
      "New-PSDrive -Credential $creds -Name F -PSProvider FileSystem -Root \"${var.storage_path}\" >$null",

    <snip>

    ]
  }
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