CODEWITHSUNDEEP
azureterraformazure-virtual-machine
learner
learner

Reputation: 2860

Terraform on Azure cloud - VM name and Data disk name are not aligned

I have created VM and added Data Disk to be, however there is one issue.The VM name and data disk name DO NOT align. Please refer to the screenshot below.

NXTPREPAOS-1 Machine Disks

NXTPREPAOS-1 Machine Disks

NXTPREPAOS-5 Machine Disk

The terraform code is below:

resource "azurerm_managed_disk" "tf-mdsk-cluster" {
  count                = 5
  name                 = "${var.ax_base_hostname}-${count.index+1}-DATADISK-1"
  location             = "${azurerm_resource_group.tf-rg-cluster-aos.location}"
  resource_group_name  = "${azurerm_resource_group.tf-rg-cluster-aos.name}"
  storage_account_type = "Standard_LRS"
  create_option        = "Empty"
  disk_size_gb         = "1024"
}

resource "azurerm_managed_disk" "tf-mdsk-2-cluster" {
  count                = 5
  name                 = "${var.ax_base_hostname}-${count.index+1}-DATADISK-2"
  location             = "${azurerm_resource_group.tf-rg-cluster-aos.location}"
  resource_group_name  = "${azurerm_resource_group.tf-rg-cluster-aos.name}"
  storage_account_type = "Standard_LRS"
  create_option        = "Empty"
  disk_size_gb         = "1024"
}

resource "azurerm_virtual_machine" "tf-vm-cluster-aos" {
  count                 = 5
  name                  = "${var.ax_base_hostname}-${count.index+1}"
  location              = "${azurerm_resource_group.tf-rg-cluster-aos.location}"
  resource_group_name   = "${azurerm_resource_group.tf-rg-cluster-aos.name}"
  availability_set_id   = "${azurerm_availability_set.tf-as-cluster-aos.id}"
  network_interface_ids = ["${element(azurerm_network_interface.tf-ni-cluster-aos.*.id, count.index+1)}"]
  vm_size               = "${var.ax_vm_size}"

  storage_data_disk {
    name            = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.name, count.index+1)}"
    managed_disk_id = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.id, count.index+1)}"
    create_option   = "Attach"
    lun             = 0
    disk_size_gb    = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.disk_size_gb, count.index+1)}"
  }

  storage_data_disk {
    name            = "${element(azurerm_managed_disk.tf-mdsk-2-cluster.*.name, count.index+1)}"
    managed_disk_id = "${element(azurerm_managed_disk.tf-mdsk-2-cluster.*.id, count.index+1)}"
    create_option   = "Attach"
    lun             = 1
    disk_size_gb    = "${element(azurerm_managed_disk.tf-mdsk-2-cluster.*.disk_size_gb, count.index+1)}"
  }
}

I have changed the managed disk block

FROM

managed_disk_id = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.id, count.index+1)}"

TO

managed_disk_id = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.id, count.index)}"

But that has not solved the mystery, any idea as to how to resolve it?

Upvotes: 1

Views: 793

Answers (1)

Charles Xu
Charles Xu

Reputation: 31462

I think there is something you have misunderstand and make it a wrong setting. When you create the managed disk, you set the index with count.index+1. Then the data name will has the number {1,2,3,4,5} with the index {0,1,2,3,4}. And when you create the VM and add managed disk in it. You set the index in the storage_data_disk also as count.index+1. So when the index is 1 of the VM, the disk number will be 2.

You can change the index in the storage_data_disk into count.index. And it will work as you want. The azurerm_virtual_machine will like this:

resource "azurerm_virtual_machine" "tf-vm-cluster-aos" {
  count                 = 5
  name                  = "${var.ax_base_hostname}-${count.index+1}"
  location              = "${azurerm_resource_group.tf-rg-cluster-aos.location}"
  resource_group_name   = "${azurerm_resource_group.tf-rg-cluster-aos.name}"
  availability_set_id   = "${azurerm_availability_set.tf-as-cluster-aos.id}"
  network_interface_ids = ["${element(azurerm_network_interface.tf-ni-cluster-aos.*.id, count.index+1)}"]
  vm_size               = "${var.ax_vm_size}"

  storage_data_disk {
    name            = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.name, count.index)}"
    managed_disk_id = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.id, count.index)}"
    create_option   = "Attach"
    lun             = 0
    disk_size_gb    = "${element(azurerm_managed_disk.tf-mdsk-cluster.*.disk_size_gb, count.index)}"
  }

  storage_data_disk {
    name            = "${element(azurerm_managed_disk.tf-mdsk-2-cluster.*.name, count.index)}"
    managed_disk_id = "${element(azurerm_managed_disk.tf-mdsk-2-cluster.*.id, count.index)}"
    create_option   = "Attach"
    lun             = 1
    disk_size_gb    = "${element(azurerm_managed_disk.tf-mdsk-2-cluster.*.disk_size_gb, count.index)}"
  }
}

Upvotes: 1

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