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如何在 Terraform VPC 模块中迭代公共/私有子网？

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如何在 Terraform VPC 模块中迭代公共/私有子网？

我正在尝试将公共子网和私有子网定义为 Terraform 的输入变量vpc 模块。如何在迭代语句中引用我的私有/公共子网变量，而不是在“list[x]”元素中进行硬编码？

我有在中定义的 vpc 模块（目前只有两个 AZ）main.tf。

module "vpc" {
  source          = "terraform-aws-modules/vpc/aws"
  name            = "my-vpc"
  cidr            = var.my_cidr

  azs             = ["eu-west-1a", "eu-west-1b"]
  private_subnets = [var.my_private_subnets[0], var.my_private_subnets[1]]
  public_subnets  = [var.my_public_subnets[0], var.my_public_subnets[1]]
  #                      ^
  #                      +--- can these subnets be iterated over in a for_each here?
  ...
}

我的子网输入变量定义如下：

variable "my_cidr" {
  description = "The IPv4 CIDR block for the VPC"
  type        = string
  default     = "10.10.0.0/16"
}

variable "my_private_subnets" {
  type = list
  description = "private subnet within vpc cidr block"
  default = ["10.10.20.0/24", "10.10.30.0/24"]
}

variable "my_public_subnets" {
  type = list
  description = "public subnet within vpc cidr block"
  default = ["10.10.100.0/24", "10.10.200.0/24"]
}

答案1

首先将变量类型更新为列表（字符串）

    variable "my_private_subnets" {
    type = list(string)
    description = "private subnets within vpc cidr block"
    default = ["10.10.20.0/24", "10.10.30.0/24"]
    }

    variable "my_public_subnets" {
    type = list(string)
    description = "public subnets within vpc cidr block"
    default = ["10.10.20.0/24", "10.10.30.0/24"]
    }

然后将这些作为变量传递给模块，如下所示：

    module "vpc" {
    source = "terraform-aws-modules/vpc/aws"
    name   = "my-vpc"
    cidr   = "10.6.0.0/16"

    azs = ["eu-west-1a", "eu-west-1b"]
    private_subnets = var.my_private_subnets
    public_subnets  = var.my_public_subnets
    
    }

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