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The standard module structure is a file and directory layout we recommend for reusable modules distributed in separate repositories. Terraform tooling is built to understand the standard module structure and use that structure to generate documentation, index modules for the module registry, and more. The standard module structure expects the layout documented below. The list may appear long, but

Each HCP Terraform workspace is associated with a particular Terraform configuration, which is expected to change and evolve over time. Since every organization has its own preferred source code control practices, HCP Terraform does not provide integrated version management. Instead, it expects Terraform configurations to be managed in your existing version control system (VCS). In order to perfor

Terraform v0.12 is a major release focused on configuration language improvements and thus includes some changes that you'll need to consider when upgrading. The goal of this guide is to cover the most common upgrade concerns and issues. For most users, upgrading configuration should be completely automatic. Some simple configurations will require no changes at all, and most other configurations c

Hands-on: Try the Reuse Configuration with Modules tutorials. A module is a container for multiple resources that are used together. You can use modules to create lightweight abstractions, so that you can describe your infrastructure in terms of its architecture, rather than directly in terms of physical objects. The .tf files in your working directory when you run terraform plan or terraform appl

Stores the state as a given key in a given bucket on Amazon S3. This backend also supports state locking and consistency checking via Dynamo DB, which can be enabled by setting the dynamodb_table field to an existing DynamoDB table name. A single DynamoDB table can be used to lock multiple remote state files. Terraform generates key names that include the values of the bucket and key variables. Wa

This guide is meant for enterprise users looking to advance their Terraform usage from a few individuals to a full organization. For Terraform code style recommended practices, refer to the Terraform style guide. IntroductionHashiCorp specializes in helping IT organizations adopt cloud technologies. Based on what we've seen work well, we believe the best approach to provisioning is collaborative i

Hands-on: Try the Simplify Terraform Configuration with Locals tutorial. A local value assigns a name to an expression, so you can use the name multiple times within a module instead of repeating the expression. If you're familiar with traditional programming languages, it can be useful to compare Terraform modules to function definitions: Input variables are like function arguments.Output values

Each Terraform configuration has an associated backend that defines how Terraform executes operations and where Terraform stores persistent data, like state. The persistent data stored in the backend belongs to a workspace. The backend initially has only one workspace containing one Terraform state associated with that configuration. Some backends support multiple named workspaces, allowing multip

The source argument in a module block tells Terraform where to find the source code for the desired child module. Terraform uses this during the module installation step of terraform init to download the source code to a directory on local disk so that other Terraform commands can use it. Hands-on: Try the Use Modules From the Registry or Build and Use a Local Module tutorials. The module installe

Hands-on: Try the Terraform: Get Started tutorials. Resources are the most important element in the Terraform language. Each resource block describes one or more infrastructure objects, such as virtual networks, compute instances, or higher-level components such as DNS records. Resource Blocks documents the syntax for declaring resources. Resource Behavior explains in more detail how Terraform han

HCP Terraform provides an API for a subset of its features. If you have any questions or want to request new API features, please email support@hashicorp.com. Note: Before planning an API integration, consider whether the tfe Terraform provider meets your needs. It can't create or approve runs in response to arbitrary events, but it's a useful tool for managing your organizations, teams, and works

The terraform graph command produces descriptions of the relationships between objects in a Terraform configuration, using the DOT language. UsageUsage: terraform graph [options] By default the result is a simplified graph which describes only the dependency ordering of the resources (resource and data blocks) in the configuration. The -type=... option optionally selects from a number of other gra

Hands-on: Try the Perform CRUD Operations with Providers tutorial. Terraform relies on plugins called providers to interact with cloud providers, SaaS providers, and other APIs. Terraform configurations must declare which providers they require so that Terraform can install and use them. Additionally, some providers require configuration (like endpoint URLs or cloud regions) before they can be use

Hands-on: Try the Customize Terraform Configuration with Variables tutorial. Input variables let you customize aspects of Terraform modules without altering the module's own source code. This functionality allows you to share modules across different Terraform configurations, making your module composable and reusable. When you declare variables in the root module of your configuration, you can se

Terraform Docs OverviewTerraform is an infrastructure as code tool that lets you build, change, and version infrastructure safely and efficiently. This includes low-level components like compute instances, storage, and networking, as well as high-level components like DNS entries and SaaS features.

wget -O - https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list sudo apt update && sudo apt install terraform sudo yum install -y yum-utils sudo yum-config-man

Note: This page is about Terraform 0.11 and earlier. For Terraform 0.12 and later, see Configuration Language: Expressions and Configuration Language: Functions. Embedded within strings in Terraform, whether you're using the Terraform syntax or JSON syntax, you can interpolate other values. These interpolations are wrapped in ${}, such as ${var.foo}. The interpolation syntax is powerful and allows

Other pages in this section have described various configuration constructs that can appear in the Terraform language. This page describes the lower-level syntax of the language in more detail, revealing the building blocks that those constructs are built from. This page describes the native syntax of the Terraform language, which is a rich language designed to be relatively easy for humans to rea

Terraform EnterpriseTerraform Enterprise is a self-hosted instance of HCP Terraform with features like audit logging and SAML single sign-on. Terraform Enterprise is HashiCorp's self-hosted distribution of HCP Terraform. Terraform Enterprise offers a private instance of HCP Terraform application, with no resource limits and additional enterprise-grade architectural features like audit logging and

Hands-on: Try the Reuse Configuration with Modules tutorials. Modules are containers for multiple resources that are used together. A module consists of a collection of .tf and/or .tf.json files kept together in a directory. Modules are the main way to package and reuse resource configurations with Terraform. The Root ModuleEvery Terraform configuration has at least one module, known as its root m

Plugin DevelopmentDesign, develop, and test plugins that connect Terraform to external services. Terraform is logically split into two main parts: Terraform Core: This is the Terraform binary that communicates with plugins to manage infrastructure resources. It provides a common interface that allows you to leverage many different cloud providers, databases, services, and in-house solutions.Terraf

Tools like CloudFormation, Heat, etc. allow the details of an infrastructure to be codified into a configuration file. The configuration files allow the infrastructure to be elastically created, modified and destroyed. Terraform is inspired by the problems they solve. Terraform similarly uses configuration files to detail the infrastructure setup, but it goes further by being both cloud-agnostic a

What is Terraform?Terraform is an infrastructure as code tool that lets you build, change, and version cloud and on-prem resources safely and efficiently. HashiCorp Terraform is an infrastructure as code tool that lets you define both cloud and on-prem resources in human-readable configuration files that you can version, reuse, and share. You can then use a consistent workflow to provision and man