main.tf

module "vault_west" {
  source = "../"

  vpc_cidr = "172.31.1.0/24"
  vpc_name = "vault-west"

  providers = {
    aws = aws.us-west-2
  }
}

module "vault_east" {
  source = "../"

  vpc_cidr = "172.31.2.0/24"
  vpc_name = "vault-east"

  providers = {
    aws = aws.us-east-1
  }
}

provider.tf

terraform {
  required_providers = {
    aws = {
      source = "hashicorp/aws"
    }
  }
}

provider "aws" {
  alias  = "us-west-2"

  region = "us-west-2"
}

provider "aws" {
  alias  = "us-east-1"

  region = "us-east-1"
}