環境

tfevnいれてる

アップグレード方法

0.12系から一気に0.15系へアップグレードすることはできないみたい
0.12→0.13→0.14→0.15と順を追っていく必要がある

v0.12.29→v0.13.7

現在

.terraform-version

.terraform-version

0.12.29

変更する

.terraform-version

.terraform-version

0.13.7

providerの箇所

0.12系の書き方に住居

provider.tf

provider "aws" {
  region  = var.region
  version = "= 3.1"
  profile = "vamdemic"
}

terraform {
  backend "s3" {
    bucket  = "vamdemic-terraform"
    region  = "ap-northeast-1"
    profile = "terraformer"
    key     = "terraform/terraform.tfstate"
    encrypt = true
  }
}

upgrade実行

rm -fr .terraform
terraform init -upgrade

planして、リソースの差分などが出たら手動で直す

terraform plan

v0.13.7→0.14.11

.terraform-version

.terraform-version

0.14.11

upgrade実行

terraform init -upgrade

エラー発生

Warning: Version constraints inside provider configuration blocks are deprecated

  on main.tf line 3, in provider "aws":
   3:   version = "= 3.1"

Terraform 0.13 and earlier allowed provider version constraints inside the
provider configuration block, but that is now deprecated and will be removed
in a future version of Terraform. To silence this warning, move the provider
version constraint into the required_providers block.


Error: Invalid legacy provider address

This configuration or its associated state refers to the unqualified provider
"aws".

You must complete the Terraform 0.13 upgrade process before upgrading to later
versions.

文法が変わっているので書き換えてあげる

provider.tf

provider "aws" {
  region  = local.region
  profile = "vamdemic"
}

terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "= 3.36.0"
    }
  }
  backend "s3" {
    bucket  = "vamdemic-terraform"
    region  = "ap-northeast-1"
    profile = "terraformer"
    key     = "terraform/terraform.tfstate"
    encrypt = true
  }
}

providerを書き換える

URLというか名称が変わっているらしいので

terraform state replace-provider registry.terraform.io/-/aws hashicorp/aws

再度upgrade実行

terraform init -upgrade

planして、リソースの差分などが出たら手動で直す

terraform plan

v0.14.11→v0.15.3

.terraform-version

.terraform-version

0.15.3

upgrade実行

terraform init -upgrade

planして、リソースの差分などが出たら手動で直す

terraform plan