aws_s3_bucket region cannot be set

[relnetops]

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Terraform CLI and Terraform AWS Provider Version

GitLab Pipeline (image: hashicorp/terraform)

$ terraform init
 Initializing the backend...
 Successfully configured the backend "s3"! Terraform will automatically
 use this backend unless the backend configuration changes.
 Initializing provider plugins...
 - Checking for available provider plugins...
 - Downloading plugin for provider "aws" (hashicorp/aws) 3.0.0...

Local

% terraform -v  
Terraform v0.12.29
+ provider.aws v3.0.0

Affected Resource(s)

• aws_s3_bucket

Terraform Configuration Files

resource "aws_s3_bucket" "https_bucket" {
  bucket = local.cloudfront_https_bucket_name
  acl    = var.acl
  region = var.aws_region

  versioning {
    enabled = var.versioning_enabled
  }

  server_side_encryption_configuration {
    rule {
      apply_server_side_encryption_by_default {
        sse_algorithm = "AES256"
      }
    }
  }

  tags = merge(local.tags, map("Name", local.cloudfront_https_bucket_name))
}

Debug Output

Panic Output

 $ terraform plan -out plan-$ENV.txt
 Error: "region": this field cannot be set
   on s3.tf line 36, in resource "aws_s3_bucket" "https_bucket":
   36: resource "aws_s3_bucket" "https_bucket" {

Expected Behavior

No changes. Infrastructure is up-to-date.

Actual Behavior

Error: "region": this field cannot be set

Steps to Reproduce

# update to latest terraform and aws provider:
terraform init

# run plan against unchanged config
terraform plan

Important Factoids

GitLab pipeline uses the latest hashicorp/terraform image:

.plan:
  stage: test
  image:
    name: hashicorp/terraform
    entrypoint: [""]
  script:
    - cd automation
    - terraform init
    - terraform workspace select $ENV
    - terraform plan -out plan-$ENV.tfplan

References

• resource/aws_s3_bucket: Convert region to read-only attribute #14127 (?)

[bflad]

Hi @relnetops 👋 Thank you for filing this. Please note this is expected behavior in version 3.0.0 and later of the Terraform AWS Provider. The region of the bucket is determined by the region of the provider, similar to all other resources. Please see the Version 3 Upgrade Guide for more information.

[ghost]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.

If you feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!