如何将 terraform import 与传入的变量一起使用？

Question

我正在学习 Terraform，并想使用该工具设置 AWS 基础设施。

我们有 3 个 AWS 环境，沙盒、暂存和生产，并且有现有的基础设施来支持这些环境。例如，我们为每个环境设置了 3 个独立的 VPC。

我想根据我尝试设置的环境使用 terraform import 导入这些资源的状态。所以我基本上想这样做，虽然我知道这在语法上不正确，但你明白了。

$ terraform import aws_vpc.my_vpc -var 'environment=sandbox'

因此我的模块设置如下

vpc/main.tf
-----------
provider "aws" {
  region = "us-east-1"
}
resource "aws_vpc" "my_vpc" {
  cidr_block = ""
}

vpc/variables.tf
----------------
variable "environment" {
  type map = map(string)
  default {
    sandbox    = "vpc-1234"
    staging    = "vpc-2345"
    production = "vpc-3456"
  }
}

所以这意味着我基本上想做

$ terraform import aws_vpc.my_vpc vpc-1234

我怎样才能做到这一点？

Answer 1

仅供参考

The terraform import command is used to import existing infrastructure.

The command currently can only import one resource at a time. This means you can't yet point Terraform import to an entire collection of resources such as an AWS VPC and import all of it. This workflow will be improved in a future version of Terraform import usage.

您传递的这些将被视为后续模块的输入变量，而不是从环境变量文件中获取值，而是为变量设置值。

Input variables serve as parameters for a Terraform module, allowing aspects of the module to be customized without altering the module's own source code, and allowing modules to be shared between different configurations. configuration variables

导入语法：

terraform import aws_instance.example i-abcd1234

This command locates the AWS instance with ID i-abcd1234 and attaches its existing settings, as described by the EC2 API, to the name aws_instance.example in the Terraform state.

所以使用变量处理导入的方法可以是系统环境变量，由于ec2可以导入，所以本例以使用变量导入实例为主。

instance.tf

provider "aws" {
  region              = "us-west-2"
  profile             = "test"
}

resource "aws_instance" "ec2" {
  ami                         = "ami-0f2176987ee50226e"
  instance_type               = "t2.micro"
  associate_public_ip_address = false
  subnet_id                   = "subnet-example"
  vpc_security_group_ids      = ["sg-example"]
  key_name                    = "mytest-ec2key"
  tags = {
    Name = "Test EC2 Instance"
  }
}

要将变量传递给上述脚本，您可以使用系统环境变量。

 export stage_instance=i-abcexample && terraform import aws_instance.ec2 $stage_instance

或者你也可以试试

export stage_instance=abc && export prod_instance=abc

然后尝试导入

terraform import aws_instance.ec2 $stage_instance

Answer 2

我遇到了同样的问题，发现顺序很重要。此命令有效：

$ terraform import -var 'environment=sandbox' aws_vpc.my_vpc vpc-1234

如何将 terraform import 与传入的变量一起使用？

How to use terraform import with passed-in variables?

terraform

terraform-provider-aws