azure - 使用 Terraform 的同一 VNet 中的多个子网

Question

我对 terraform 完全陌生，我正在尝试学习和编写 TF 代码来自动化 Azure VM 部署。我试图将每个部分作为模块(rg 除外)来覆盖，而不是将其保存在单个 main.tf 文件中。 我的目的是创建 1 个 vnet (TESTVNET) 并在同一 Vnet 中创建多个子网，我可以在 tfvars 文件中定义子网名称和地址。

我能够到达 VNet 上的创建，但无法循环遍历定义的子网

请仔细阅读我的代码。文件Main.tf

    resource "azurerm_resource_group" "resource_group" {
      name     = var.RGname
      location = var.RGlocation
    }
    
    module "VNET" {
      source              = "./Modules/NetworkConfig"
      name                = var.VNETname
      address_space       = var.address_space
      location            = var.RGlocation
      resource_group_name = azurerm_resource_group.resource_group.name
    }
    
    module "SUBNETS" {
      source               = "./Modules/SubnetConfig"
      Subnetlist = var.Subnetlist
      virtual_network_name = module.VNET.vnet_name
      resource_group_name  = azurerm_resource_group.resource_group.name
      depends_on           = [azurerm_resource_group.resource_group, module.VNET.vnet]
    
    }

Variables.tf (of main)

    variable "RGlocation" {
    }
    
    variable "RGname" {
    }
    
    variable "VNETname" {
    }
    
    variable "address_space" {
    }
    
    variable "Subnetlist" {
      type = map(object({
        name    = list(string)
        address = list(string)
    }))
    }

文件main.tfvars

    RGlocation = "westus"
    RGname     = "TEST-RG1"
    
    VNETname      = "TEST-VNET-01"
    address_space = "10.0.0.0/16"
    
    
    Subnetlist = {
      "list" = {
        name    = ["TESTSUBNET","TESTSUBNET1","TESTSUBNET2"]
        address = ["10.0.1.0/24","10.0.2.0/24","10.0.3.0/24"]
      }
    }

文件Subnets.tf(模块)

    resource "azurerm_subnet" "SUBNETS" {
        for_each=var.Subnetlist
        name=each.value.name
        address_prefixes=each.value.address
          resource_group_name  = var.resource_group_name
          virtual_network_name = var.virtual_network_name
        
        }

文件variable.tf(子网模块)

    variable "resource_group_name" {
    }
    
    variable "virtual_network_name" {
    }
    
    variable "Subnetlist" {
      type = map(object({
        name    = list(string)
        address = list(string)
      }))
    }

下面是我遇到的错误

    ╷
    │ Error: Incorrect attribute value type
    │
    │   on Modules\SubnetConfig\Subnet.tf line 3, in resource "azurerm_subnet" "SUBNETS":
    │    3: name=each.value.name
    │     ├────────────────
    │     │ each.value.name is list of string with 3 elements
    │
    │ Inappropriate value for attribute "name": string required.

谁能告诉我如何解决这个问题吗？另外，如果这不是正确的方法，请告诉我。

Answer 1

您迭代Subnetlist的方式不正确 - 您只获得“list”键的值，最终得到一组子网而不是单个项目。使其成为单个子网对象的映射:

variable "Subnetlist" {
  type = map(object({
    name    = string
    address = string
  }))
}

然后将其传递到 tfvars 中，例如:

Subnetlist = {
    "s1" = { name = "TESTSUBNET", address = "10.0.1.0/24" },
    "s2" = { name = "TESTSUBNET1", address = "10.0.2.0/24" },
    "s3" = { name = "TESTSUBNET2", address = "10.0.3.0/24" }
}

最后在模块中使用它，如下所示:

resource "azurerm_subnet" "SUBNETS" {
    for_each = var.Subnetlist
    name = each.value.name
    address_prefixes = each.value.address
    resource_group_name = var.resource_group_name
    virtual_network_name = var.virtual_network_name
}