= Cloud/Terraform/MultiProviderAws =

 * Goal is to use multiple aws providers, e.g. in different accounts or regions.
   * This is used for DNS in central account, or CloudFront only is us-east-1

 * e.g. from https://github.com/hashicorp/terraform-provider-aws/issues/22586#issuecomment-1013547452 {{{
terraform {
  required_version = ">= 1.0"
  required_providers {
    aws = {
      source = "hashicorp/aws"
    }
  }
}

provider "aws" {
  region = "us-east-1"
}

provider "aws" {
  region = "us-west-1"
  alias = "usw1"
}

module "east" {
  source = "./aws"
}

module "west" {
  source = "./aws"
  providers = {
    aws = aws.usw1
  }
}

output "east" {
  value = module.east.region
}

output "west" {
  value = module.west.region
}
}}}

== Example errors ==
 * Err1 - due to no provider in module {{{
 Warning: Provider aws is undefined
  :     aws = aws.prod
 Module module.route53 does not declare a provider named aws.
}}}
 * Fix 1 - add to module main.tf or versions.tf {{{
terraform {
  required_version = "> 1.0"
  required_providers {
    aws = {
      source = "hashicorp/aws"
    }
  }
}
}}}