Multi-Cloud (AWS, Azure and GCP) IaC with Terraform empowered with Terragrunt

Diagram

Prerequisites

External

• AWS Account and generated programmatic credentials.
• GCP Account and generated programmatic credentials.
• Azure Account and generated programmatic credentials.
• CloudFlare account, domain and generated API Token.

Environment

• Python3
• Terraform 12 (https://www.terraform.io/downloads.html)
• Terragrunt (https://github.com/gruntwork-io/terragrunt/releases)

Preparation

1. Export all programmatic credentials for all clouds \ systems to your environment.
2. Install dependencies with python pip:

pip install -r requirements.txt

Usage

Generate \ update the target environment

1. New environment creation

cookiecutter .generator/

2. Existing environment update

ENV=preprod
cookiecutter .generator/ -f --config-file $ENV/.cookiecutter.yaml

Apply core stack (or any other)

ENV=preprod
cd $ENV/core
terragrunt init
terragrunt apply

Apply all stacks

ENV=preprod
cd $ENV
terragrunt plan-all
terragrunt apply-all

Verify

fqdn=terraform-multicloud-demo-$ENV.dovnar-alexander.xyz
.data/check.sh $fqdn

Apply all stacks with Core

ENV=preprod
cd $ENV
terragrunt destroy-all