在另一个模块中为 EC2 添加指定子网 - AWS Terraform -

Question

我是 Terraform 新手。 我有 vpc 模块和 ec2 模块。

• VPC 模块创建 3 个公共子网。
• Ec2 模块创建 2 个实例。

-> 所以我想要第一个实例使用的公共子网 1，第二个实例使用的公共子网 3。我使用了输出变量，但我不知道如何使用输出。请帮帮我

提供者是 AWS

VPC 模块

#/module/vpc/main.tf
resource "aws_subnet" "pub_subnet" {
    count = var.create_vpc && length(var.public_subnet) > 0 ? length(var.public_subnet) : 0
    vpc_id = local.vpc_id
    availability_zone = element(var.azs, count.index)
    cidr_block = element(var.public_subnet, count.index)
    map_public_ip_on_launch = true
    # network_acls = aws_network_acl.nacls
    tags = merge ({
        Name = format("Pub_subnet %s", element(var.public_subnet, count.index))
    },
    var.tags
    )
}

#module/vpc/output
output "public_subnet_id" {
    value = aws_subnet.pub_subnet[0].id
}

EC2 模块

#/module/ec2/variables
variable "ec2_instance" {
    type = map(object({
        ec2_name = string
        ec2_ami = string
        ec2_instance_type = string
        ec2_subnet_id = string
        ec2_associate_public_ip_address = string
        ec2_key_name = string
        ec2_security_groups = list(string)
        ec2_user_data = string
        root_block_device_volume_type = string
        root_block_device_volume_size = number
        root_block_device_iops = number
        root_block_device_throughput = number
    }))
}

#/module/vpc/main.tf
resource "aws_instance" "ec2" {
      for_each = var.ec2_instance
      ami           = each.value.ec2_ami
      instance_type = each.value.ec2_instance_type
      subnet_id = each.value.ec2_subnet_id
      associate_public_ip_address = each.value.ec2_associate_public_ip_address
      key_name = each.value.ec2_key_name
      security_groups = each.value.ec2_security_groups
      user_data = each.value.ec2_user_data
      root_block_device {
      volume_type = each.value.root_block_device_volume_type
      volume_size = each.value.root_block_device_volume_size
      iops = each.value.root_block_device_iops
      throughput = each.value.root_block_device_throughput
  }
      tags = merge ({
        Name = format("%s", each.value.ec2_name)
    },
    var.tags
    )
}

根模块

#/main.tf
module "vpc" {
source = "../../modules/ec2"
public_subnet = [ "13.9.1.0/24", "13.9.2.0/24", "13.9.7.0/24" ]
}
module "ec2"{
    source = "../../modules/ec2"
    ec2_instance = {
      "bastion_pub_sub_1" = {
        ec2_name = "bastion_pub_sub_1"
        ec2_ami = data.aws_ami.ubuntu_20_04.id
        ec2_associate_public_ip_address = true
        ec2_instance_type = "t2.micro"
        ec2_key_name = #secret
        ec2_subnet_id = module.vpc.public_subnet_id
        ec2_user_data = "value"
        root_block_device_iops = 3000
        root_block_device_throughput = 125
        root_block_device_volume_size = 8
        root_block_device_volume_type = "gp3"
      },
    source = "../../qa_modules/ec2"
    ec2_instance = {
      "bastion_pub_sub_2" = {
        ec2_name = "bastion_pub_sub_2"
        ec2_ami = data.aws_ami.ubuntu_20_04.id
        ec2_associate_public_ip_address = true
        ec2_instance_type = "t2.micro"
        ec2_key_name = #secret
        ec2_subnet_id = module.vpc.public_subnet_id
        ec2_user_data = "value"
        root_block_device_iops = 3000
        root_block_device_throughput = 125
        root_block_device_volume_size = 8
        root_block_device_volume_type = "gp3"
      }
}

所以，在 ec2_subnet_id = module.vpc.public_subnet_id，我如何添加子网“13.9.1.0/24”，例如“bastion_pub_sub_1”，子网“13.9.7.0/24” “bastion_pub_sub_2”

Answer 1

你的输出应该是：

output "public_subnet_id" {
    value = aws_subnet.pub_subnet[*].id
}

然后：

module "ec2"{
    source = "../../modules/ec2"
    ec2_instance = {
      "bastion_pub_sub_1" = {
        ec2_name = "bastion_pub_sub_1"
        ec2_ami = data.aws_ami.ubuntu_20_04.id
        ec2_associate_public_ip_address = true
        ec2_instance_type = "t2.micro"
        ec2_key_name = #secret
        ec2_subnet_id = module.vpc.public_subnet_id[0]
        ec2_user_data = "value"
        root_block_device_iops = 3000
        root_block_device_throughput = 125
        root_block_device_volume_size = 8
        root_block_device_volume_type = "gp3"
      },
    source = "../../qa_modules/ec2"
    ec2_instance = {
      "bastion_pub_sub_2" = {
        ec2_name = "bastion_pub_sub_2"
        ec2_ami = data.aws_ami.ubuntu_20_04.id
        ec2_associate_public_ip_address = true
        ec2_instance_type = "t2.micro"
        ec2_key_name = #secret
        ec2_subnet_id = module.vpc.public_subnet_id[2]
        ec2_user_data = "value"
        root_block_device_iops = 3000
        root_block_device_throughput = 125
        root_block_device_volume_size = 8
        root_block_device_volume_type = "gp3"
      }
}