![]() ![]() A simple module’s main.tf file, without any nested modules, declares all resources within this file. If using nested modules to split up your infrastructure’s required resources, the main.tf file holds all your module blocks and any needed resources not contained within your nested modules. This naming convention is recommended, but not enforced. ![]() These files provide an entry point into any nested modules you might utilize.Īny module should include, at minimum, a main.tf, a variables.tf, and an outputs.tf file. The root module is the directory that holds the Terraform configuration files that are applied to build your desired infrastructure. The primary module structure requirement is that a root module must exist. If you would like to make your module public to the Terraform community, the recommended layout allows Terraform to generate documentation and index modules for the Terraform Module Registry. Terraform’s standard module structure provides guidance on file and directory layouts for reusable modules. Review Deploy a WordPress Site using Terraform and StackScripts to familiarize yourself with the Linode provider’s StackScript resource. Follow the Getting Started with the Linode API guide to obtain a token.Ĭomplete the steps in the Configure Git section of the Getting Started with Git guide. View Terraform v0.12’s changelog for a full list of new features and version incompatibility notes. To learn how to safely upgrade to Terraform version 0.12+, see Terraform’s official documentation. Terraform’s Linode Provider has been updated and now requires Terraform version 0.12+. Your Terraform project directory should be named linode_stackscripts. Install Terraform on your local computer using the steps found in the Install Terraform section of the Use Terraform to Provision Linode Environments guide. We recommend taking that lesson to learn more. However, if you still have questions, HashiCorp has posted a series of tutorials on Terraform modules on HashiCorp Learn, and the “Build a Module” section is timed to take only about 15 minutes. This guide covers the creation of a Terraform module used to deploy a Linode instance. Reading the “Modules” section of the Terraform Language Documentation is suggested for more details. The Terraform Module Registry hosts community modules that you can reuse for your own Terraform configurations, or you can publish your own modules for consumption by the Terraform community. You can also host your Terraform modules on remote version control services, like Git, for others to use. Modules can create lightweight abstractions so your infrastructure can be described in terms of its architecture, as opposed to direct terms of physical objects. Officially, a Terraform module contains multiple resources that are used with each other, but if you look at one, it’s a directory with a set of Terraform configuration files contained within. Terraform Modules What is a Terraform Module? This module will include nested modules that split up the required resources between the root module, a linode_instance module, and a stackscripts module. This module will deploy a Linode instance from a StackScript you will create. In this guide you will create a Linode StackScripts module. Terraform modules allow you to better organize your configuration code and make the code reusable. It’s used to build, maintain, and version infrastructure safely. Terraform is a popular orchestration tool by HashiCorp. ![]()
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