使用 Terraform Azure 的多个 VM 和磁盘

Question

我有一个要求，我需要创建多个 Azure Windows VM，每个磁盘具有不同的大小，并且每个 VM 都放置在不同的 AZ 中（因此，如果我传入 3 个 vm 名称，每个都将转到不同的可用区以及磁盘）。

我有一些东西可以处理相同大小的磁盘，但当我需要分配不同大小的磁盘时却不行。

提前感谢您的帮助。

到目前为止我的代码：

variable "instances" {
    description = "No. of instances"
    type = list(string)
    default = ["vm-1", "vm-2"]
}


variable "nb_disks_per_instance" {
    description = "No. disks per vm"
    type = number
    default = 2
    
}

variable "disks" {
    description = "disk sizes"
    type = list(number)
    default = [10, 20, 30]
}

locals {

  vm_datadiskdisk_count_map = { for k in toset(var.instances) : k => var.nb_disks_per_instance }
  luns                      = { for k in local.datadisk_lun_map : k.datadisk_name => k.lun }

  datadisk_lun_map = flatten([
    for vm_name, count in local.vm_datadiskdisk_count_map : [
      for i in range(count) : {
        datadisk_name = format("%s_Data_Disk_%02d", vm_name, i)
        lun           = i
      }
    ]
  ])

}

output "myMap" {
  value = local.datadisk_lun_map
}
 
resource "azurerm_managed_disk" "managed_disk" {
  for_each             = toset([for j in local.datadisk_lun_map : j.datadisk_name])
  name                 = replace(each.key, "_", "-")
  location             = "UK South"
  resource_group_name  = "rg-one"
  storage_account_type = "Standard_LRS"
  create_option        = "Empty"
  disk_size_gb         = 20
  tags                 = local.common_tags
  zones                = ["1"] 

}

resource "azurerm_virtual_machine_data_disk_attachment" "managed_disk_attach" {
  for_each           = toset([for j in local.datadisk_lun_map : j.datadisk_name])
  managed_disk_id    = azurerm_managed_disk.managed_disk[each.key].id
  virtual_machine_id = azurerm_windows_virtual_machine.vm[element(split("_", each.key), 0)].id
  lun                = lookup(local.luns, each.key)
  caching            = "ReadWrite"
}

resource "azurerm_network_interface" "nic" {
  for_each            = toset(var.instances)
  location            = "UK South"
  name                = "${each.key}-NIC"
  resource_group_name = "rg-one"
  ip_configuration {
    name                          = "internal"
    private_ip_address_allocation = "Dynamic"
    subnet_id                     = data.azurerm_subnet.subnet.id
  } 
  tags = local.common_tags

}

resource "azurerm_windows_virtual_machine" "vm" {
  for_each       = toset(var.instances)
  admin_password = <ENTER PW>
  admin_username = "test"
  location = "UK South"
  name = each.key
  network_interface_ids = [azurerm_network_interface.nic[format("%s", each.key)].id]
  resource_group_name = "rg-one"
  size = "Standard_D4s_v4"
  tags = local.common_tags
  zone = index(var.instances, each.value) + 1

 os_disk {
    caching = "ReadWrite"
    storage_account_type = "Premium_LRS"
    name = "${each.key}-OS-DISK-00"
  }



} 

Answer 1

以您的方式，创建一个具有多个磁盘的 VM 很容易，但创建多个具有不同大小和数量的磁盘的 VM 却很困难。最好的方法是使用 Terraform 模块。

该模块类似于您创建一个具有多个磁盘的虚拟机的方式，因此我将仅向您展示如何使用该模块：

variable "vms" {
    type = map(object({
        size = string
        admin_user = string
        admin_password = string
        disks = list(number)
    }))
}

module "vms" {
    for_each = var.vms
    
    source = "./modules/vm"
    resource_group_name = var.rg_name
    vm_name = each.key
    vm = each.value
    disks = each.value["disks"]
    location = var.location
}

terraform.tfvar

rg_name = "charlesVMs"
location = "East US"
vms ={
  azurevm1 = {
    
    size = "Standard_DS1_v2"
    admin_user = "azureuser"
    admin_password = "azureuser@2021"
    disks = [30, 30]
  }
}

这个例子只是为你提供了一个解决你的需求的方向，获取更多关于另一个issue的细节。如果您对此问题有任何疑问，请告诉我，我愿意为您提供帮助。