Terraform-provider-aws: data.terraform_remote_state: error initializing backend: Not a valid region: eu-west-3

[ebarault]

Hi,

I have an issue linked to eu-west-3 region support with terraform_remote_state.
This is linked to https://github.com/terraform-providers/terraform-provider-aws/issues/2745, but might not be covered yet, since I follow the workarounds provided there (skip_region_validation) and this still does not work.

I could not find where the source code of terraform_remote_state is located to investigate myself.

Terraform Version

Terraform v0.11.2
AWS Provider 1.7.1

Affected Resource(s)

Please list the resources as a list, for example:

• terraform_remote_state

Terraform Configuration Files

provider "aws" {
  version = "~> 1.7.0"
  allowed_account_ids = ["${var.allowed_account_id}"]
  region =  "eu-west-3"
  skip_region_validation = "true"
}

terraform {
  backend "s3" {
    bucket = "mybucket"
    key    = "path/to/my/key"
    region = "eu-west-3"
    skip_region_validation = "true"
  }
}


data "terraform_remote_state" "this" {
  backend = "s3"

  config {
    region = "eu-west-3"
    bucket = "path/to/this/key"
    key    = "terraform.tfstate"
  }
}

data.terraform_remote_state.vpc: Refreshing state...
Error: Error refreshing state: 1 error(s) occurred:
* data.terraform_remote_state.this: 1 error(s) occurred:
* data.terraform_remote_state.this: data.terraform_remote_state.this: error initializing backend: Not a valid region: eu-west-3

RELATED PR

https://github.com/terraform-providers/terraform-provider-aws/issues/2745

[jen20]

Hi @ebarault! Thanks for opening an issue. This likely requires the vendored version of the AWS plugin to be in updated in Terraform core - the provider knows about eu-west-3 but not the back end code (this is a client-side validation). I'll update the dependency in the main repository and open a pull request on it.

[ebarault]

replying to myself:
it happens that we can also set the skip_region_validation = true option in each terraform_remote_state block like this:

data "terraform_remote_state" "this" {
  backend = "s3"

  config {
    region = "eu-west-3"
    bucket = "path/to/this/key"
    skip_region_validation = true
    key    = "terraform.tfstate"
  }
}

a bit annoying when requiring lots of terraform_remote_state, but works.

[jen20]

@ebarault The referenced pull request should do the trick - in the meantime your workaround is valid, if a little ugly!

[ebarault]

@jen20 : thks, i'll follow the landing of this PR and update with my test results

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