• Cloud
• Terraform
• MultiProviderAws

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"
      }
    }
  }