Azurerm_linux_virtual_machine getting recreated on every apply

Hello all,

we are using Terraform v0.12.29 to manage a group of VMs on Azure using azurerm 2.10.0.

Whenever we run “apply”, Terraform wants to recreate the VMs:

grafik1539×494 18 KB

It seems to me, that this is related to the public and private IPs, since these are marked with “-”.

The configuration of the public IP and network interface looks like this:

resource "azurerm_public_ip" "pip" {
     count               = var.public_ip ? 1 : 0
  name                = "${local.name_prefix}-pip"
  location            = var.location
  resource_group_name = var.resource_group_name
  #allocation_method   = "Dynamic"
  allocation_method   = var.public_ip_dynamic ? "Dynamic" : "Static"
  sku                 = "Basic"

  tags = var.common_tags

}

resource "azurerm_network_interface" "nic" {
  name                = "${local.name_prefix}-nic"
  location            = var.location
  resource_group_name = var.resource_group_name
  count = var.nic == [1] ? 1:0
  ip_configuration {
    name                          = "nic-config"
    subnet_id                     = var.subnet_id
    private_ip_address_allocation = "Dynamic"
    public_ip_address_id          = var.public_ip ? azurerm_public_ip.pip[0].id : null
  }

  tags = var.common_tags
}

resource "azurerm_linux_virtual_machine" "vm" {
  name                          = "${local.name_prefix}-vm"
  location                      = var.location
  resource_group_name           = var.resource_group_name
  network_interface_ids         = var.nic == [1] ? [azurerm_network_interface.nic[0].id] : var.nic
  size                          = var.vm_size
  admin_username                = var.admin_username
  computer_name                 = "${local.name_prefix}-host"
  custom_data                   = var.custom_data
  }

Anyone have an idea what we may be doing wrong?

Best regards and thanks in advance!

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