The image option in storage_profile_os_disk under azurerm_virtual_machine_scale_set not working

[retheshnair]

Hi there,

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Terraform Version

terraform -v
Terraform v0.8.4

Affected Resource(s)

Please list the resources as a list, for example:

• azurerm_virtual_machine_scale_set

If this issue appears to affect multiple resources, it may be an issue with Terraform's core, so please mention this.

Terraform Configuration Files

VIRTUAL MACHINE SCALE SET
=====================

  os_profile {
    computer_name_prefix = "${var.AZURE_WEBSERVER}"
    admin_username = "${var.AZURE_OS_ADMIN_USER}"
    admin_password = "${var.AZURE_OS_ADMIN_PASSWORD}"
  }

  os_profile_linux_config {
    disable_password_authentication = true
    ssh_keys {
      path                        = "/home/${var.AZURE_OS_ADMIN_USER}/.ssh/authorized_keys"
      key_data                    = "${file(var.AZURE_LINUX_SSH_KEY_PUB)}"
    }
  }

  network_profile {
      name = "webserverscale01-networkprofile"
      primary = true
      ip_configuration {
        name = "ipconfig1-webserverscaleset01"
        subnet_id = "${azurerm_subnet.vnet01_subnet0.id}"
      }
  }

  storage_profile_os_disk {
    os_type = "linux"
    name             = "webserverscalset01_osdisk01"
    vhd_containers = ["${azurerm_storage_account.storageaccount01.primary_blob_endpoint}${azurerm_storage_container.storagecontainer01.name}"]
    caching          = "ReadWrite"
    create_option    = "FromImage"
   # image            = "${var.AZURE_CUSTOM_SERVER_IMAGE}"
    image             = "https://retheshstorage02.blob.core.windows.net/system/Microsoft.Compute/Images/images/packer-osDisk.a79a2ebb-1a9e-4d2b-9704-1f5e370d6b4e.vhd"
  }

}

Debug Output

Please provider a link to a GitHub Gist containing the complete debug output: https://www.terraform.io/docs/internals/debugging.html. Please do NOT paste the debug output in the issue; just paste a link to the Gist.

Panic Output

No panic output

Expected Behavior

We should be able to spin up VM in VM scale set using the saved image .This same image can be used for spinning up VM using azurerm_virtual_machine and it is working

Actual Behavior

It is not working as expected

terraform : �[31mError applying plan:
At line:1 char:1

• terraform apply

•   + CategoryInfo          : NotSpecified: (�[31mError applying plan::String) 
    [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
  
  

1 error(s) occurred:

• azurerm_virtual_machine_scale_set.webserverscalset01:
  compute.VirtualMachineScaleSetsClient#CreateOrUpdate: Failure responding to
  request: StatusCode=400 -- Original Error: autorest/azure: Service returned an
  error. Status=400 Code="InvalidParameter" Message="Parameter
  'OSDisk.vhdContainers' is not allowed."
  Terraform does not automatically rollback in the face of errors.
  Instead, your Terraform state file has been partially updated with
  any resources that successfully completed. Please address the error
  above and apply again to incrementally change your infrastructure.�[0m�[0m

Steps to Reproduce

Please list the steps required to reproduce the issue, for example:

1. terraform apply

[moritzheiber]

We are seeing the same issue with our deployments.

According to the documentation (scroll to the Q&A section; middle of the page) vhd_containers is not a required parameter, but rather, can be left out if image is specified.

This is clearly a bug in the resource provider.

Using Azure Scale Sets with Terraform and custom images is currently broken because of this.

[moritzheiber]

FYI, there is a PR trying to fix this (and some other issues): #11516

[shtratos]

In my experience, if you are trying to create a VMSS from a custom image - you must omit or leave vhd_containers in your ARM template. As I understand, that's because VMSS requires custom image to be in the same storage account where it keeps VHDs.

Compare:

• Custom image template - https://github.com/Azure/azure-quickstart-templates/blob/master/201-vmss-windows-customimage/azuredeploy.json#L235-L245
• Standard image template - https://github.com/Azure/azure-quickstart-templates/blob/master/201-vmss-custom-script-windows/azuredeploy.json#L111-L129

[stack72]

Closed via #11516

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.