Terraform and Azure: Not possible to specify the NIC ordering on a VM.

[vinayvenkat]

Terraform Version

Terraform v0.9.5

Terraform Configuration Files

resource "azurerm_network_interface" "VNIC0" {
  name                = "${join("", list("FW", "web-nic", "0"))}"
  location            = "${var.location}"
  resource_group_name = "${azurerm_resource_group.VV_FW_RG.name}"
  depends_on          = ["azurerm_virtual_network.VV_FW_VNET",
                          "azurerm_public_ip.PublicIP_0"]

  ip_configuration {
    name                          = "${join("", list("ipconfig", "0"))}"
    subnet_id                     = "${azurerm_subnet.VV_FW_Subnet0.id}"
    private_ip_address_allocation = "dynamic"
    public_ip_address_id = "${azurerm_public_ip.PublicIP_0.id}"
  }

  tags {
    displayName = "${join("", list("NetworkInterfaces", "0"))}"
  }
}

resource "azurerm_network_interface" "VNIC1" {
  name                = "${join("", list("FW", "web-nic", "1"))}"
  location            = "${var.location}"
  resource_group_name = "${azurerm_resource_group.VV_FW_RG.name}"
  depends_on          = ["azurerm_virtual_network.VV_FW_VNET"]

  ip_configuration {
    name                          = "${join("", list("ipconfig", "1"))}"
    subnet_id                     = "${azurerm_subnet.VV_FW_Subnet1.id}"
    private_ip_address_allocation = "dynamic"
  }

  tags {
    displayName = "${join("", list("NetworkInterfaces", "1"))}"
  }
}

resource "azurerm_network_interface" "VNIC2" {
  name                = "${join("", list("FW", "web-nic", "2"))}"
  location            = "${var.location}"
  resource_group_name = "${azurerm_resource_group.VV_FW_RG.name}"
  depends_on          = ["azurerm_virtual_network.VV_FW_VNET"]

  ip_configuration {
    name                          = "${join("", list("ipconfig", "2"))}"
    subnet_id                     = "${azurerm_subnet.VV_FW_Subnet2.id}"
    private_ip_address_allocation = "dynamic"
  }

  tags {
    displayName = "${join("", list("NetworkInterfaces", "2"))}"
  }
}

resource "azurerm_virtual_machine" "VV_FW_Web" {
  name                  = "web-vm"
  location              = "${var.location}"
  resource_group_name   = "${azurerm_resource_group.VV_FW_RG.name}"
  vm_size               = "${var.gvmSize}"

  storage_image_reference {
    publisher = "${var.imagePublisher}"
    offer     = "${var.imageOffer}"
    sku       = "${var.ubuntuOSVersion}"
    version   = "latest"
  }

  storage_os_disk {
    name          = "web-osdisk"
    vhd_uri       = "${azurerm_storage_account.VV_FW_STG_AC.primary_blob_endpoint}vhds/osdisk-Web.vhd"
    caching       = "ReadWrite"
    create_option = "FromImage"
  }

  os_profile {
    computer_name  = "web-server-vm"
    admin_username = "${var.adminUsername}"
    admin_password = "${var.adminPassword}"
  }

  network_interface_ids = ["${azurerm_network_interface.VNIC0.id}",
                            "${azurerm_network_interface.VNIC1.id}",
                            "${azurerm_network_interface.VNIC2.id}"]
  primary_network_interface = "${azurerm_network_interface.VNIC0.id}"
  tags {
    environment = "staging"
  }
}

Debug Output

azurerm_virtual_machine.VV_FW_Web: Creating...
availability_set_id: "" => ""
delete_data_disks_on_termination: "" => "false"
delete_os_disk_on_termination: "" => "false"
license_type: "" => ""
location: "" => "westus"
name: "" => "web-vm"
network_interface_ids.#: "" => "3"
network_interface_ids.1300869970: "" => "/subscriptions/4b81abdf-236e-4012-a18d-4c5976220c92/resourceGroups/vvrg3/providers/Microsoft.Network/networkInterfaces/FWweb-nic0"
network_interface_ids.2743587454: "" => "/subscriptions/4b81abdf-236e-4012-a18d-4c5976220c92/resourceGroups/vvrg3/providers/Microsoft.Network/networkInterfaces/FWweb-nic2"
network_interface_ids.982418372: "" => "/subscriptions/4b81abdf-236e-4012-a18d-4c5976220c92/resourceGroups/vvrg3/providers/Microsoft.Network/networkInterfaces/FWweb-nic1"

Panic Output

If Terraform produced a panic, please provide a link to a GitHub Gist containing the output of the crash.log.

Expected Behavior

The NIC's should be presented as: VNIC0, VNIC1, VNIC2.

Actual Behavior

The NIC's in the VM configure section were specified as VNIC0, VNIC1, VNIC2. However, when the NIC's are presented to the VM they are ordered as: VNIC0, VNIC2, VNIC1.

Steps to Reproduce

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

1. terraform apply

Important Factoids

Are there anything atypical about your accounts that we should know? For example: Running in EC2 Classic? Custom version of OpenStack? Tight ACLs?

References

Are there any other GitHub issues (open or closed) or Pull Requests that should be linked here? For example:

• provider/aws: Fix issue when changing map-public-ip in Subnets #1234

[stack72]

Closing as this is already here hashicorp/terraform-provider-azurerm#140

[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.