azure - 来自远程 terraform 模块的输出变量

Question

对于一个项目，我使用远程模块(git 模块)，这些模块在 terraformMain.tf 文件中调用和执行。

例如，我使用 Azure 资源组模块，该模块通过“count = length (var.resourcegroups)”在 terraformMain.tf 中循环。我现在遇到的问题是，我想在下一个模块(创建 VNET)中使用两个创建的资源组之一，但我不断遇到以下错误:

Error: Unsupported attribute

on outputs.tf line 2, in output "RG": 2: value =[module.resourceGroups.resource_group_name]

This value does not have any attributes.

Unsupported attribute

on terraformMain.tf line 33, in module "vnet": 33:resourcegroup_name = module.resourceGroups.resource_group_name[0]

This value does not have any attributes.

Azure 资源组模块代码如下所示:

ma​​in.tf

resource "azurerm_resource_group" "RG" {
  name  = var.resource_group_name
  location = var.location
}

变量.tf

variable "location" {
    type = string
}

variable "resource_group_name" {
    type = string
}

outputs.tf

output "resource_group_names" {
   value       = concat(azurerm_resource_group.RG.*.name, [""])[0]
}

terraformMain.tf 的代码如下所示:

terraformMain.tf

terraform {
  required_version = ">= 0.13"

  required_providers {
    azurerm = {
      source = "hashicorp/azurerm"
      version = "2.45.1"
    }
  }

  backend "azurerm" {
    resource_group_name   = "__terraformresourcegroup__"
    storage_account_name  = "__terraformstorageaccount__"
    container_name        = "__terraformcontainer__"
    key                   = "__terraformkey__"
  }

}

provider "azurerm" {
  features {}
}

module "resourceGroups" {
  count     = length(var.resourcegroups)
  source    = "git::https://*****@dev.azure.com/****/TerraformAzureModules/_git/ResourceGroup"
  location  = var.location
  resource_group_name = var.resourcegroups[count.index]
}

module "vnet" {
  source = "git::https://*****@dev.azure.com/****/TerraformAzureModules/_git/VirtualNetwork"
  resourcegroup_name = module.resourceGroups.resource_group_name[0]
  location = var.location  
  vnet_name = var.vnet_name

  count     = length(var.subnet_names)
  vnet_cidr = var.vnet_cidr[count.index]  
  subnet_cidr = var.subnet_cidr[count.index]
  subnet_name = var.subnet_names[count.index]
}

变量.tf

variable "location" {
    default = "westeurope" 
}

variable "resourcegroups" {
    default = ["rg1", "rg2"]
}

#Azure Vnet / Subnet
variable "vnet_name" {
  default = "vnet_1"
}
variable "subnet_names" {
  default = ["subnet1", "subnet2"]
}
variable "vnet_cidr" {
  default = ["10.116.15.0/24"]
}
variable "subnet_cidr" {
  default     = ["10.116.15.0/26", "10.116.15.128/27"]
}

outputs.tf

output "RG" {
  value       = [module.resourceGroups.resource_group_name]
}

感谢任何帮助!

Answer 1

您的 resourceGroups 模块设置了 count = length(var.resourcegroups)，因此 module.resourceGroups 是一个对象列表，因此在访问属性之前，您需要从列表中请求特定元素:

module.resourceGroups[0].resource_group_name

或者，如果您的目标是返回所有资源组名称的列表，则可以使用 the [*] operator简洁地访问每个元素的 resource_group_name 参数并以列表形式返回结果:

resource.resourceGroups[*].resource_group_name