如何解决使用 for_each 将不同数量的磁盘附加到不同数量的 VM
TF 版本：0.13.4
提供者版本：2.40.0
我不确定最好/最有效的方法来做到这一点，但我想要实现的是将 2 个磁盘（目前）附加到每个 VM，但我需要能够配置每个 VM和磁盘根据要求。将来我可能需要改变磁盘和 VM 的数量。我试图让 for_each 循环遍历大小，并根据其中有多少个值，创建该数量的磁盘，以便我可以拥有多个不同大小的磁盘。
有没有一种无需手动创建多个托管磁盘资源的方法？
我当前的代码创建了不同数量的 VM，但每个 VM 只附加一个磁盘。 for_each 迭代的变量在每个环境的 tfvars 文件中设置：
desktop_servers = {
"Server_1" = {
name = 1,zone = 1,lun = 1,size = 32
}
"Server_2" = {
name = 2,zone = 2,lun = 2,size = 32
}
"Server_3" = {
name = 3,zone = 3,lun = 3,size = 32
}
}
etl_servers = {
"Server_1" = {
name = 1,size = 32
}
}
module.tf 内的虚拟机资源
# Azure Virtual Machine
resource "azurerm_windows_virtual_machine" "virtual_machine" {
for_each = var.servers
name = "vm-${var.environment}-${var.vm_identifier}${each.value.name}"
location = var.location
resource_group_name = var.resource_group
zone = each.value.zone
size = var.vm_size
network_interface_ids = [azurerm_network_interface.network_interface[each.key].id]
computer_name = "${var.vm_identifier}${each.value.name}"
admin_username = xxxx
admin_password = xxxx
provision_vm_agent = "true"
source_image_id = data.azurerm_shared_image.dwp_shared_image.id
boot_diagnostics {
storage_account_uri = data.azurerm_storage_account.dwp_diag_storage_account.primary_blob_endpoint
}
os_disk {
name = "vm-${var.environment}-${var.directorate}-${var.business_unit}-${var.vm_identifier}-os${each.value.name}"
caching = "ReadWrite"
storage_account_type = "Premium_LRS"
}
depends_on = [azurerm_network_interface.network_interface]
}
module.tf 中的托管磁盘资源：
# #Managed disks per vm
resource "azurerm_managed_disk" "managed_disk" {
for_each = var.servers
name = "disk-${var.environment}-${var.vm_identifier}${each.value.name}"
location = var.location
resource_group_name = var.resource_group
storage_account_type = "Premium_LRS"
create_option = "Empty"
disk_size_gb = each.value.size
zones = [azurerm_windows_virtual_machine.virtual_machine[each.key].zone]
}
resource "azurerm_virtual_machine_data_disk_attachment" "disk_attachment" {
for_each = var.servers
managed_disk_id = azurerm_managed_disk.managed_disk[each.key].id
virtual_machine_id = azurerm_windows_virtual_machine.virtual_machine[each.key].id
lun = each.value.lun
caching = "ReadWrite"
}
模块内的variable.tf：
variable "servers" {
description = "Variable for defining each instance"
}
main.tf 中 ETL 服务器的模块示例。 :
module "etl_vm" {
source = "../modules/compute/windows_vm"
location = var.location
resource_group = azurerm_resource_group.rg_sbox_etl.name
directorate = var.directorate
business_unit = var.business_unit
environment = var.environment
network_rg_identifier = var.network_rg_identifier
subnet_name = "sub-${var.environment}-${var.directorate}-${var.business_unit}-be01"
diag_storage_account_name = var.diag_storage_account_name
log_analytics_workspace_name = var.log_analytics_workspace_name
backup_policy_name = var.backup_policy_name
vm_identifier = "${var.vm_identifier}${var.instance_number}-etl"
servers = var.etl_servers
vm_size = var.etl_vm_size
enable_management_locks = true
image_name = "WIN2016-CISL2"
gallery_subscription_id = var.sub_id
gallery_resourcegroup = var.rg_gallery
gallery_name = "SBOXGallery"
解决方法
您可以使用模块来实现它。但这有点复杂。思路是你使用模块来配置VM，在每个VM中，你可以配置不同的数据盘，并把它们附加到VM上。使用该变量输入不同的配置虚拟机号。下面是一个例子：
main.tf
ConnectivityManager cm = (ConnectivityManager) this.getSystemService(Context.CONNECTIVITY_SERVICE);
Network activeNetwork = cm.getActiveNetwork();
NetworkCapabilities networkCapabilities = cm.getNetworkCapabilities(activeNetwork);
int signalStrength = networkCapabilities.getSignalStrength();
terraform.tfvar
variable "rg_name" {
type = string
}
variable "vms" {
type = map(object({
size = string
admin_user = string
admin_password = string
disks = list(number)
}))
}
variable "location" {}
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
}
./modules/vm/main.tf
rg_name = "charlesVMs"
location = "East US"
vms ={
azurevm1 = {
size = "Standard_DS1_v2"
admin_user = "azureuser"
admin_password = "azureuser@2021"
disks = [30,30]
}
}
您只需为 variable "resource_group_name" {}
variable "vm" {}
variable "disks" {}
variable "location" {}
variable "vm_name" {}
resource "azurerm_resource_group" "example" {
name = var.resource_group_name
location = var.location
}
resource "azurerm_virtual_network" "example" {
name = "example-network"
address_space = ["10.0.0.0/16"]
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
}
resource "azurerm_subnet" "example" {
name = "internal"
resource_group_name = azurerm_resource_group.example.name
virtual_network_name = azurerm_virtual_network.example.name
address_prefixes = ["10.0.2.0/24"]
}
resource "azurerm_network_interface" "example" {
name = "example-nic"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
ip_configuration {
name = "internal"
subnet_id = azurerm_subnet.example.id
private_ip_address_allocation = "Dynamic"
}
}
resource "azurerm_linux_virtual_machine" "vm" {
name = var.vm_name
resource_group_name = azurerm_resource_group.example.name
location = azurerm_resource_group.example.location
size = var.vm["size"]
disable_password_authentication = false
admin_username = var.vm["admin_user"]
admin_password = var.vm["admin_password"]
network_interface_ids = [
azurerm_network_interface.example.id
]
# admin_ssh_key {
# username = "adminuser"
# public_key = file("~/.ssh/id_rsa.pub")
# }
os_disk {
caching = "ReadWrite"
storage_account_type = "Standard_LRS"
}
source_image_reference {
publisher = "Canonical"
offer = "UbuntuServer"
sku = "16.04-LTS"
version = "latest"
}
}
resource "azurerm_managed_disk" "example" {
count = length(var.vm["disks"])
name = "datadisk-${count.index}"
location = azurerm_resource_group.example.location
resource_group_name = azurerm_resource_group.example.name
storage_account_type = "Standard_LRS"
create_option = "Empty"
disk_size_gb = element(var.vm["disks"],count.index)
}
resource "azurerm_virtual_machine_data_disk_attachment" "example" {
count = length(var.vm["disks"])
managed_disk_id = element(azurerm_managed_disk.example.*.id,count.index)
virtual_machine_id = azurerm_linux_virtual_machine.vm.id
lun = count.index
caching = "ReadWrite"
}
变量提供不同数量的 VM 配置和不同数量的磁盘和大小。
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