VMSS Managed Disk - storage_profile_os_disk.name should be optional

[hashibot]

This issue was originally opened by @tombuildsstuff as hashicorp/terraform#14932. It was migrated here as part of the provider split. The original body of the issue is below.

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Currently when creating a Managed Disk in an azurerm_virtual_machine_scale_set - the name field under storage_profile_os_disk is a Required field. However this can't be set at the same time as managed_disk_type, as such it needs to be set to an empty string - instead this would make more sense as an Optional field.

Terraform Version

0.9.6

Affected Resource(s)

• azurerm_vm_scale_set

Terraform Configuration Files

resource "azurerm_resource_group" "test" {
  name     = "vmss-bug"
  location = "West US 2"
}

resource "azurerm_virtual_network" "test" {
  name                = "vmss-vn"
  address_space       = ["10.0.0.0/16"]
  location            = "West US 2"
  resource_group_name = "${azurerm_resource_group.test.name}"
}

resource "azurerm_subnet" "test" {
  name                 = "vmss-bugsn"
  resource_group_name  = "${azurerm_resource_group.test.name}"
  virtual_network_name = "${azurerm_virtual_network.test.name}"
  address_prefix       = "10.0.2.0/24"
}

resource "azurerm_network_interface" "test" {
  name                = "vmss-bugni"
  location            = "West US 2"
  resource_group_name = "${azurerm_resource_group.test.name}"

  ip_configuration {
    name                          = "testconfiguration1"
    subnet_id                     = "${azurerm_subnet.test.id}"
    private_ip_address_allocation = "dynamic"
  }
}

resource "azurerm_storage_account" "test" {
  name                = "vmssbugsa"
  resource_group_name = "${azurerm_resource_group.test.name}"
  location            = "West US 2"
  account_type        = "Standard_LRS"

  tags {
    environment = "staging"
  }
}

resource "azurerm_storage_container" "test" {
  name                  = "vhds"
  resource_group_name   = "${azurerm_resource_group.test.name}"
  storage_account_name  = "${azurerm_storage_account.test.name}"
  container_access_type = "private"
}

resource "azurerm_virtual_machine_scale_set" "test" {
  name                   = "vmss-bug-vmss"
  location               = "West US 2"
  resource_group_name    = "${azurerm_resource_group.test.name}"
  upgrade_policy_mode    = "Manual"
  single_placement_group = false

  sku {
    name     = "Standard_D1_v2"
    tier     = "Standard"
    capacity = 2
  }

  os_profile {
    computer_name_prefix = "testvm-vmss"
    admin_username       = "myadmin"
    admin_password       = "Passwword1234"
  }

  network_profile {
    name    = "TestNetworkProfile"
    primary = true

    ip_configuration {
      name      = "TestIPConfiguration"
      subnet_id = "${azurerm_subnet.test.id}"
    }
  }

  storage_profile_os_disk {
    name              = ""
    caching           = "ReadWrite"
    create_option     = "FromImage"
    managed_disk_type = "Standard_LRS"
  }

  storage_profile_image_reference {
    publisher = "Canonical"
    offer     = "UbuntuServer"
    sku       = "16.04-LTS"
    version   = "latest"
  }
}

Debug Output

n/a

Panic Output

n/a

Expected Behavior

The name field in the storage_profile_os_disk object should be Optional, rather than Required - given it's only mandatory for non-managed disks.

Actual Behavior

The name field needs to be set to an empty string currently (see the HCL above)

References

• [MS] Adding support for VMSS Data Disks using Managed Disk feature terraform#14608
• Azure VMSS documentation corrections terraform#14906
• (#14906) docs/provider/azure/vmss: managed_disk_type, typos; sidebar fix VM  terraform#14915

[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 feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. If you feel I made an error 🤖 🙉 , please reach out to my human friends 👉 hashibot-feedback@hashicorp.com. Thanks!