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CDK for Terraform

Learn more about this product’s maturity and production readiness

CDK (Cloud Development Kit) for Terraform allows developers to use familiar programming languages to define cloud infrastructure and provision it through HashiCorp Terraform.

terraform platform

Overview

CDK for Terraform apps are written in one of the supported programming languages and can leverage the entire ecosystem of Terraform modules and providers. The application synthesizes Terraform configuration in JSON. Terraform or the CDK for Terraform can then be used to deploy the application.

The CDK for Terraform project includes two packages:

  • cdktf-cli - A CLI that allows users to run commands to initialize, import, and synthesize CDK for Terraform applications.
  • cdktf - A library for defining Terraform resources using programming constructs.

The project currently supports TypeScript, Python, Java, and C#.

Getting Started

Choose a language:

Hands-on: Try the tutorials in the CDK for Terraform collection on HashiCorp Learn.

Examples

Typescript

Backends

Python

Java

C#

Go

Please note: Support for Golang is at an experimental state. In the CDK for Terraform and in the upstream library JSII which powers the support for the supported languages.

Documentation

Project Maturity and Production Readiness

CDK for Terraform is under active development; we’re still working out key workflows and best practices. We’re iterating fast and are likely to introduce breaking changes to existing APIs to improve the overall user experience of the product.

This tool can be used with Terraform Cloud and Terraform Enterprise, but is not eligible for commercial support, and is not officially recommended for production use cases. Like other HashiCorp pre-1.0 tools, some early-adopter users are already using CDK for Terraform in production, and we are working with those users to validate and improve workflows.

Early adopters of CDK for Terraform should expect to encounter and work around bugs occasionally, may need to refactor their codebase with each major release, and will intermittently need to use HCL and understand how JSON Terraform configurations are generated, for example to use overrides to use Terraform functionality that cannot currently be expressed using CDK for Terraform. Our goal is to provide a user experience where this is an exceptional edge case. If you’re comfortable with this level of troubleshooting, we’re very interested in your feedback and practical experience.

These caveats apply to CDK for Terraform itself, which generates Terraform configurations. Generated Terraform configurations are applied using Terraform Core, a well established / mature tool to provision infrastructure.

Contributing and Feedback

CDK for Terraform is an early experimental project and the development team would love your feedback to help guide the project.

Building

Clone the project repository

git clone https://github.com/hashicorp/terraform-cdk.git

Download dependencies

cd terraform-cdk/
yarn install

Build the project and packages

yarn build

Cloud Development Kit (CDK) Ecosystem

CDK for Terraform apps are structured as a tree of constructs. The language support beyond Typescript is made possible by jsii.