Awesome

This is a collection of reusable AWS Terraform components for provisioning infrastructure used by the Cloud Posse reference architectures. They work really well with Atmos, our open-source tool for managing infrastructure as code with Terraform.

[!TIP]

👽 Use Atmos with Terraform

Cloud Posse uses atmos to easily orchestrate multiple environments using Terraform. Works with Github Actions, Atlantis, or Spacelift.
<details> <summary>Watch demo of using Atmos with Terraform</summary> <img src="https://github.com/cloudposse/atmos/blob/master/docs/demo.gif?raw=true"/> Example of running <a href="https://atmos.tools"><code>atmos</code></a> to manage infrastructure from our <a href="https://atmos.tools/quick-start/">Quick Start</a> tutorial. </detalis>

Introduction

In this repo you'll find real-world examples of how we've implemented Terraform "root" modules as native Atmos Components for our customers. These Components leverage our hundreds of free and open-source terraform "child" modules.

The component library captures the business logic, opinions, best practices and non-functional requirements for an organization.

It's from this library that other developers in your organization will pick and choose from whenever they need to deploy some new capability.

These components make a lot of assumptions (aka "convention over configuration") about how we've configured our environments. That said, they still serve as an excellent reference for others on how to build, organize and distribute enterprise-grade infrastructure with Terraform that can be used with Atmos.

Usage

Please take a look at each component's README for specific usage.

[!TIP]

👽 Use Atmos with Terraform

To orchestrate multiple environments with ease using Terraform, Cloud Posse recommends using Atmos, our open-source tool for Terraform automation.
<details> <summary>Watch demo of using Atmos with Terraform</summary> <img src="https://github.com/cloudposse/atmos/blob/master/docs/demo.gif?raw=true"/> Example of running <a href="https://atmos.tools"><code>atmos</code></a> to manage infrastructure from our <a href="https://atmos.tools/quick-start/">Quick Start</a> tutorial. </detalis>

Generally, you can use these components in Atmos by adding something like the following code into your stack manifest:

components:                      # List of components to include in the stack
  terraform:                     # The toolchain being used for configuration
    vpc:                         # The name of the component (e.g. terraform "root" module)
      vars:                      # Terraform variables (e.g. `.tfvars`)
        cidr_block: 10.0.0.0/16  # A variable input passed to terraform via `.tfvars`

Automated Updates of Components using GitHub Actions

Leverage our GitHub Action to automate the creation and management of pull requests for component updates.

This is done by creating a new file (e.g. atmos-component-updater.yml) in the .github/workflows directory of your repository.

The file should contain the following:

jobs:
update:
  runs-on:
    - "ubuntu-latest"
  steps:
    - name: Checkout Repository
      uses: actions/checkout@v4
      with:
        fetch-depth: 1

    - name: Update Atmos Components
      uses: cloudposse/github-action-atmos-component-updater@v2
      env:
        # https://atmos.tools/cli/configuration/#environment-variables
        ATMOS_CLI_CONFIG_PATH: ${{ github.workspace }}/rootfs/usr/local/etc/atmos/
      with:
        github-access-token: ${{ secrets.GITHUB_TOKEN }}
        log-level: INFO
        max-number-of-prs: 10

    - name: Delete abandoned update branches
      uses: phpdocker-io/github-actions-delete-abandoned-branches@v2
      with:
        github_token: ${{ github.token }}
        last_commit_age_days: 0
        allowed_prefixes: "component-update/"
        dry_run: no

For the full documentation on how to use the Component Updater GitHub Action, please see the Atmos Intergations documentation.

Using `pre-commit` Hooks

This repository uses pre-commit and pre-commit-terraform to enforce consistent Terraform code and documentation. This is accomplished by triggering hooks during git commit to block commits that don't pass checks (E.g. format, and module documentation). You can find the hooks that are being executed in the .pre-commit-config.yaml file.

You can install pre-commit and this repo's pre-commit hooks on a Mac machine by running the following commands:

brew install pre-commit gawk terraform-docs coreutils
pre-commit install --install-hooks

Then run the following command to rebuild the docs for all Terraform components:

make rebuild-docs

[!IMPORTANT]

Deprecated Components

Terraform components which are no longer actively maintained are kept in the deprecated/ folder.

Many of these deprecated components are used in our older reference architectures.

We intend to eventually delete, but are leaving them for now in the repo.

[!IMPORTANT] In Cloud Posse's examples, we avoid pinning modules to specific versions to prevent discrepancies between the documentation and the latest released versions. However, for your own projects, we strongly advise pinning each module to the exact version you're using. This practice ensures the stability of your infrastructure. Additionally, we recommend implementing a systematic approach for updating versions to avoid unexpected changes.

Makefile Targets

Available targets:

  help                                Help screen
  help/all                            Display help for all targets
  help/short                          This help short screen
  rebuild-docs                        Rebuild README for all Terraform components
  rebuild-mixins-docs                 Rebuild README for Terraform Mixins
  upstream-component                  Upstream a given component

Related Projects

Check out these related projects.

Cloud Posse Terraform Modules - Our collection of reusable Terraform modules used by our reference architectures.
Atmos - Atmos is like docker-compose but for your infrastructure

References

For additional context, refer to some of these links.

Cloud Posse Documentation - Complete documentation for the Cloud Posse solution
Reference Architectures - Launch effortlessly with our turnkey reference architectures, built either by your team or ours.

[!TIP]

Use Terraform Reference Architectures for AWS

Use Cloud Posse's ready-to-go terraform architecture blueprints for AWS to get up and running quickly.

✅ We build it together with your team. ✅ Your team owns everything. ✅ 100% Open Source and backed by fanatical support. 

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<details><summary>📚 Learn More</summary> 
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Your team can operate like a pro today.

Ensure that your team succeeds by using Cloud Posse's proven process and turnkey blueprints. Plus, we stick around until you succeed.

Day-0: Your Foundation for Success

Reference Architecture. You'll get everything you need from the ground up built using 100% infrastructure as code.

Deployment Strategy. Adopt a proven deployment strategy with GitHub Actions, enabling automated, repeatable, and reliable software releases.

Site Reliability Engineering. Gain total visibility into your applications and services with Datadog, ensuring high availability and performance.

Security Baseline. Establish a secure environment from the start, with built-in governance, accountability, and comprehensive audit logs, safeguarding your operations.

GitOps. Empower your team to manage infrastructure changes confidently and efficiently through Pull Requests, leveraging the full power of GitHub Actions.

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Training. Equip your team with the knowledge and skills to confidently manage the infrastructure, ensuring long-term success and self-sufficiency.

Support. Benefit from a seamless communication over Slack with our experts, ensuring you have the support you need, whenever you need it.

Troubleshooting. Access expert assistance to quickly resolve any operational challenges, minimizing downtime and maintaining business continuity.

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Bug Fixes. Rely on our team to troubleshoot and resolve any issues, ensuring your systems run smoothly.

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✨ Contributing

This project is under active development, and we encourage contributions from our community.

Many thanks to our outstanding contributors:

For 🐛 bug reports & feature requests, please use the issue tracker.

In general, PRs are welcome. We follow the typical "fork-and-pull" Git workflow.

Review our Code of Conduct and Contributor Guidelines.
Fork the repo on GitHub
Clone the project to your own machine
Commit changes to your own branch
Push your work back up to your fork
Submit a Pull Request so that we can review your changes

NOTE: Be sure to merge the latest changes from "upstream" before making a pull request!

🌎 Slack Community

Join our Open Source Community on Slack. It's FREE for everyone! Our "SweetOps" community is where you get to talk with others who share a similar vision for how to rollout and manage infrastructure. This is the best place to talk shop, ask questions, solicit feedback, and work together as a community to build totally sweet infrastructure.

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Join us every Wednesday via Zoom for your weekly dose of insider DevOps trends, AWS news and Terraform insights, all sourced from our SweetOps community, plus a live Q&A that you can’t find anywhere else. It's FREE for everyone!

License

<details> <summary>Preamble to the Apache License, Version 2.0</summary>

Complete license is available in the LICENSE file.

Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  https://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.

</details>

Trademarks

All other trademarks referenced herein are the property of their respective owners.