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How to use GitHub Copilot for Terraform

Published at
12/11/2024
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azure
terraform
githubcopilot
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techielass
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How to use GitHub Copilot for Terraform

How to use GitHub Copilot for Terraform

In this article, weā€™re going to dive into GitHub Copilot, which is a generative AI tool. Weā€™ll talk about the features, and how it can help us when writing Terraform configurations.

What is GitHub Copilot?

GitHub Copilot is a generative AI tool developed by GitHub, and is built on OpenAIā€™s GPT (Generative Pre-trained Transformer) architecture.

Using machine learning models trained on public code repositories, GitHub Copilot provides real-time suggestions for entire lines or blocks of code based on the context of what you're typing.

This can speed up the coding process, reduce errors, and help users explore different coding methods or languages with ease.

GitHub Copilot Features

GitHub Copilot is packed with features that make it ideal for Terraform users and developers in general:

  • Intelligent code suggestions : Copilot suggests code as you type, offering options that fit your coding style.
  • Code completion : It can complete lines, statements, or complex code snippets.
  • Context-Aware : Copilot understands what you're working on and adapts to the structure and syntax of the file.
  • Multi-Language support : Besides Terraform, Copilot supports many languages, including Python, JavaScript, and YAML.
  • Comment-based commands : By writing a comment with clear instructions, you can direct Copilot to generate specific code for you.
  • Integrated with development tools : It is seamlessly integrated with popular development environments, allowing you to access its features directly within your workflow.

How to use GitHub Copilot

Getting started with GitHub Copilot in Visual Studio Code (VS Code) takes just a few steps. Hereā€™s how you can install the GitHub Copilot extension and start using it:

Step 1: Install Visual Studio Code

If you haven't already, download and install Visual Studio Code (VSCode) from theofficial website.

Step 2: Install the GitHub Copilot extension

  1. Open VSCode.
  2. Go to the Extensions view by clicking on the Extensions icon in the sidebar or pressing Ctrl+Shift+X.
  3. In the search bar, type ā€œGitHub Copilotā€.

How to use GitHub Copilot for Terraform
GitHub Copilot extension in VSCode

  1. Click Install next to the GitHub Copilot extension by GitHub.

Step 3: Log into GitHub

After installing the extension, youā€™ll be prompted to sign in to GitHub:

  1. Click Sign in to GitHub.
  2. Follow the prompts to complete the sign-in process.
  3. Grant the necessary permissions for GitHub Copilot to work in VS Code.

Step 4: Start Using Copilot

Once youā€™re signed in, GitHub Copilot is ready to go. As you start typing code or comments, GitHub Copilot will offer code suggestions automatically. You can accept these suggestions by pressing Tab.

Does GitHub Copilot work with Terraform?

Yes, GitHub Copilot is compatible with Terraform and can assist in writing Terraform configuration files (.tf).

As you type out Terraform commands, GitHub generates suggestions tailored to the syntax and structure of Terraform, which is useful for tasks like setting up resources, defining providers, and specifying variables.

GitHub Copilot's suggestions can accelerate Terraform development and help you ensure that configurations are set up correctly, following best practices.

However, always double-check the suggested code to ensure that it aligns with your infrastructureā€™s requirements and standards.

Examples of using GitHub Copilot to write Terraform configuration

In this section, weā€™ll explore how GitHub Copilot can help create an Azure resource using Terraform. Letā€™s say you want to provision an Azure App Service plan.

If we create a new file within VSCode and save it with the name main.tf.

Enter the following code to start:

resource ā€œazurerm_app_service_planā€ ā€œmy_appserviceplanā€ {

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GitHub Copilot will automatically suggest the name, location, resource group, and SKU code that you would need to complete the deployment of the service plan.

How to use GitHub Copilot for Terraform
Terraform code within VSCode

You can accept the suggestion by pressing Tab.

But you donā€™t have to start writing code to get GitHub Copilot to suggest code for you. You can start with a comment.

Open a new file in VSCode and save it called storage.tf.

Type the comment

# Terraform configuration to create an Azure storage account

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GitHub Copilot will suggest the Azure provider code automatically for you. Accept it by pressing Tab.

How to use GitHub Copilot for Terraform
Terraform code VSCode

It will then start to define the resource block to define the storage account for you, again select the suggestion using the Tab key.

How to use GitHub Copilot for Terraform
Terraform code VSCode

Conclusion

GitHub Copilot is an incredibly powerful tool for engineers working with Terraform.

Its AI-powered suggestions can improve productivity, making it easier to write Infrastructure as Code (IaC) for platforms like Azure.

With Copilotā€™s ability to suggest syntax, complete code blocks, and follow Terraform best practices, itā€™s a great assistant for those looking to manage their infrastructure more efficiently.

Just remember, GitHub Copilotā€™s suggestions are based on existing patterns, so always review the generated code to ensure it fits your requirements before deployment.

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