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amazon-web-services - 如果我不添加默认变量，则 Terraform/Terragrunt 错误

问题描述

我是一个地形新手。我已经为 cloudfront 编写了一个模块。我想将我的原始配置作为对象传递。当我运行 terragrunt 时，我收到此错误：

Error: Invalid default value for variable

  on variables.tf line 9, in variable "origin_config":
   9:   default = {
  10:      protocol_policy = "https-only"
  11:      ssl_protocol = ["TLSv1.2"]
  12:      http_port = 80
  13:      https_port = 443
  14:   }

This default value is not compatible with the variable's type constraint:
attribute "domain_name" is required.

这是我的模块代码：

resource "aws_cloudfront_distribution" "this" {
  # origin config
  origin {
    domain_name = var.origin_config.domain_name
    origin_id   = local.origin_id
    custom_origin_config  {
        origin_protocol_policy = var.origin_config.protocol_policy
        origin_ssl_protocols = var.origin_config.ssl_protocol
        http_port = var.origin_config.http_port
        https_port = var.origin_config.https_port
    }
  }

这是我的变量.tf

variable "origin_config" {
  type = object({
    domain_name = string
    protocol_policy = string
    ssl_protocol = list(string)
    http_port = number
    https_port = number
    })
  default = {
     protocol_policy = "https-only"
     ssl_protocol = ["TLSv1.2"]
     http_port = 80
     https_port = 443
  }
}

这是我的 terraform.tfvars：

origin_config = {
    domain_name = "test.example.com"
}

如果我将变量添加domain_name为默认值，那么它可以工作。似乎它没有从 terraform.tvars 读取我的输入？

标签： amazon-web-servicesterraformterragrunt

解决方案

您的type包含domain_name = string使其成为强制性的。因此，如果您不想设置固定值，则必须设置一个空字符串，例如：

variable "origin_config" {
  type = object({
    domain_name = string
    protocol_policy = string
    ssl_protocol = list(string)
    http_port = number
    https_port = number
    })
  default = {
     domain_name = ""
     protocol_policy = "https-only"
     ssl_protocol = ["TLSv1.2"]
     http_port = "80"
     https_port = "443"
  }
}

否则，domain_name从您的type. 还有一个实验性的 可选关键字：

terraform {
  experiments = [module_variable_optional_attrs]
}


variable "origin_config" {
  type = object({
    domain_name = optional(string)
    protocol_policy = string
    ssl_protocol = list(string)
    http_port = number
    https_port = number
    })
  default = {
     protocol_policy = "https-only"
     ssl_protocol = ["TLSv1.2"]
     http_port = "80"
     https_port = "443"
  }
}

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