AWSのBudgetをterraformで管理してみる

terraform {
  required_providers {
    aws = {
      source = "hashicorp/aws"
      version = "~> 4.16"
    }
  }
}

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

resource "aws_budgets_budget" "my_zero_spend_budget" {
  name = "My Zero-Spend Budget"
}

$ terraform init

$ terraform import aws_budgets_budget.my_zero_spend_budget AccountID:my_zero_spend_budget
...
...

Import successful!

The resources that were imported are shown above. These resources are now in
your Terraform state and will henceforth be managed by Terraform.

╷
│ Error: Value for unconfigurable attribute
│
│   with aws_budgets_budget.my_zero_spend_budget,
│   on main.tf line 16, in resource "aws_budgets_budget" "my_zero_spend_budget":
│   16:   arn               = "arn:aws:budgets:: {AccountID}:budget/My Zero-Spend Budget"
│
│ Can't configure a value for "arn": its value will be decided automatically based on the result of applying this configuration.
╵
╷
│ Error: Invalid or unknown key
│
│   with aws_budgets_budget.my_zero_spend_budget,
│   on main.tf line 18, in resource "aws_budgets_budget" "my_zero_spend_budget":
│   18:   id                = "{AccountID}:My Zero-Spend Budget"
│
╵

$ terraform validate
Success! The configuration is valid.

$ terraform plan
aws_budgets_budget.my_zero_spend_budget: Refreshing state... [id={AccountID}:My Zero-Spend Budget]

No changes. Your infrastructure matches the configuration.