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Terraform Documentation Website

This repository contains the entire source for the Terraform Website. This is a Next.js project, which builds a static site from these source files.

Table of Contents

Contributions Welcome!

If you find a typo or you feel like you can improve the HTML, CSS, or JavaScript, we welcome contributions. Feel free to open issues or pull requests like any normal GitHub project, and we'll merge it in 🚀

Where the Docs Live

This repository is a website shell that sources docs from disparate GitHub repositories.

The content source files are located in the following repositories:

Subpath Repository
/cdktf terraform-cdk
/cli terraform
/cloud-docs terraform-docs-common
/cloud-docs/agents terraform-docs-agents
/configuration terraform
/docs terraform-docs-common
/enterprise Internal repository
/guides terraform
/internals terraform
/intro terraform
/language terraform
/plugin terraform-docs-common
/plugin/framework terraform-plugin-framework
/plugin/log terraform-plugin-log
/plugin/mux terraform-plugin-mux
/plugin/sdkv2 terraform-plugin-sdk
/registry terraform-docs-common

Notable branches: master is the "live" content that gets deployed to The site gets redeployed for new commits to master.

Deploying Changes to

For changes in this repo

Merge the PR to master, and the site will automatically deploy in about 5m. 🙌

For changes in any other listed repositories

Depending on the repository, pushes to stable-website or main will update the latest docs on

Changes will be deployed to roughly every hour.

For more info, see Vercel's docs on ISR.

If you need your docs deployed sooner, this can be done by redeploying all of, via the Vercel project.

Running the Site Locally

The website can be run locally through node.js or Docker. If you choose to run through Docker, everything will be a little bit slower due to the additional overhead, so for frequent contributors it may be worth it to use node.

Note: If you are using a text editor that uses a "safe write" save style such as vim or goland, this can cause issues with the live reload in development. If you turn off safe write, this should solve the problem. In vim, this can be done by running :set backupcopy=yes. In goland, search the settings for "safe write" and turn that setting off.

With Docker

Running the site locally is simple. Provided you have Docker installed, clone this repo, run make, and then visit http://localhost:3000.

The docker image is pre-built with all the website dependencies installed, which is what makes it so quick and simple, but also means if you need to change dependencies and test the changes within Docker, you'll need a new image. If this is something you need to do, you can run make build-image to generate a local Docker image with updated dependencies, then make website-local to use that image and preview.

With Node

If your local development environment has a supported version (v10.0.0+) of node installed you can run:

  • npm install
  • npm start

...and then visit http://localhost:3000.

If you pull down new code from github, you should run npm install again. Otherwise, there's no need to re-run npm install each time the site is run, you can just run npm start to get it going.

Editing Markdown Content

Documentation content is written in Markdown and you'll find all files listed under the /content directory.

To create a new page with Markdown, create a file ending in .mdx in a content/<subdirectory>. The path in the content directory will be the URL route. For example, content/docs/hello.mdx will be served from the /docs/hello URL.

Important: Files and directories will only be rendered and published to the website if they are included in sidebar data. Any file not included in sidebar data will not be rendered or published.

This file can be standard Markdown and also supports YAML frontmatter. YAML frontmatter is optional, there are defaults for all keys.

title: 'My Title'
description: "A thorough, yet succinct description of the page's contents"

The significant keys in the YAML frontmatter are:

  • title (string) - This is the title of the page that will be set in the HTML title.
  • description (string) - This is a description of the page that will be set in the HTML description.

⚠️ If there is a need for a /api/* url on this website, the url will be changed to /api-docs/*, as the api folder is reserved by next.js.

Creating New Pages

There is currently a small bug with new page creation - if you create a new page and link it up via subnav data while the server is running, it will report an error saying the page was not found. This can be resolved by restarting the server.

Adding New Pages Under content/docs

Due to the way we handle old /docs redirects, you need to explicitly add your new page to the DEFINED_DOCS_PAGES array in pages/docs/_middleware.ts in addition to creating the MDX file and updating data/docs-nav-data.json. For example, if you created an MDX file at the path content/docs/why-terraform-is-awesome.mdx, you would add the string '/docs/why-terraform-is-awesome' to the DEFINED_DOCS_PAGES array.

-   '/docs/terraform-tools'
+   '/docs/terraform-tools',
+   '/docs/why-terraform-is-awesome'

The only directory you need to do this for is content/docs; all other directories will work without making any modifications outside adding the MDX file and updating the navigation data file.

Markdown Enhancements

There are several custom markdown plugins that are available by default that enhance standard markdown to fit our use cases. This set of plugins introduces a couple instances of custom syntax, and a couple specific pitfalls that are not present by default with markdown, detailed below:

  • Warning: We are deprecating the current paragraph alerts, in favor of the newer MDX Inline Alert components. The legacy paragraph alerts are represented by the symbols ~>, ->, =>, or !>.

  • If you see @include '/some/path.mdx', this is a markdown include. It's worth noting as well that all includes resolve from website/content/partials by default, and that changes to partials will not live-reload the website.

  • If you see # Headline ((#slug)), this is an example of an anchor link alias. It adds an extra permalink to a headline for compatibility and is removed from the output.

  • Due to automatically generated permalinks, any text changes to headlines or list items that begin with inline code can and will break existing permalinks. Be very cautious when changing either of these two text items.

    Headlines are fairly self-explanatory, but here's an example of how to list items that begin with inline code look.

    - this is a normal list item
    - `this` is a list item that begins with inline code

    Its worth noting that only the inline code at the beginning of the list item will cause problems if changed. So if you changed the above markup to...

    - lsdhfhksdjf
    - `this` jsdhfkdsjhkdsfjh

    ...while it perhaps would not be an improved user experience, no links would break because of it. The best approach is to avoid changing headlines and inline code at the start of a list item. If you must change one of these items, make sure to tag someone from the digital marketing development team on your pull request, they will help to ensure as much compatibility as possible.

Custom Components

A number of custom mdx components are available for use within any .mdx file. Each one is documented below:

Inline Alerts

There are custom MDX components available to author alert data. See the full documentation here. They render as colored boxes to draw the user's attention to some type of aside.

## Alert types

### Tip

  To provide general information to the user regarding the current context or
  relevant actions.

### Highlight

  To provide general or promotional information to the user prominently.

### Note

  To help users avoid an issue. Provide guidance and actions if possible.

### Warning

  To indicate critical issues that need immediate action or help users
  understand something critical.

## Title override prop

<Note title="Hashiconf 2027">To provide general information.</Note>


The Tabs component creates tabbed content of any type, but is often used for code examples given in different languages. Here's an example of how it looks from the Vagrant documentation website:

Tabs Component

Please refer to the Swingset documentation for the latest examples and API reference.

It can be used as such within a markdown file:

Normal **markdown** content.

<Tab heading="CLI command">
            <!-- Intentionally skipped line.. -->
$ command ...
            <!-- Intentionally skipped line.. -->
<Tab heading="API call using cURL">

$ curl ...


Continued normal markdown content

The intentionally skipped line is a limitation of the mdx parser which is being actively worked on. All tabs must have a heading, and there is no limit to the number of tabs, though it is recommended to go for a maximum of three or four.

Enterprise Alert

This component provides a standard way to call out functionality as being present only in the enterprise version of the software. It can be presented in two contexts, inline or standalone. Here's an example of standalone usage from the Consul docs website:

Enterprise Alert Component - Standalone

The standalone component can be used as such in markdown files:

# Page Headline

<EnterpriseAlert />

Continued markdown content...

It can also receive custom text contents if you need to change the messaging but wish to retain the style. This will replace the text This feature is available in all versions of Consul Enterprise. with whatever you add. For example:

# Page Headline

  My custom text here, and <a href="#">a link</a>!

Continued markdown content...

It's important to note that once you are adding custom content, it must be html and can not be markdown, as demonstrated above with the link.

Now let's look at inline usage, here's an example:

Enterprise Alert Component - Inline

And here's how it could be used in your markdown document:

### Some Enterprise Feature <EnterpriseAlert inline />

Continued markdown content...

It's also worth noting that this component will automatically adjust to the correct product colors depending on the context.

Other Components

Other custom components can be made available on a per-site basis, the above are the standards. If you have questions about custom components that are not documented here, or have a request for a new custom component, please reach out to @hashicorp/digital-marketing.

Syntax Highlighting

When using fenced code blocks, the recommendation is to tag the code block with a language so that it can be syntax highlighted. For example:

// BAD: Code block with no language tag

// GOOD: Code block with a language tag

Check out the supported languages list for the syntax highlighter we use if you want to double check the language name.

It is also worth noting specifically that if you are using a code block that is an example of a terminal command, the correct language tag is shell-session. For example:

🚫BAD: Using shell, sh, bash, or plaintext to represent a terminal command

$ terraform apply

GOOD: Using shell-session to represent a terminal command

$ terraform apply

Editing Navigation Sidebars

The structure of the sidebars are controlled by files in the /data directory. For example, data/docs-nav-data.json controls the docs sidebar. Within the data folder, any file with -nav-data after it controls the navigation for the given section.

The sidebar uses a simple recursive data structure to represent files and directories. The sidebar is meant to reflect the structure of the docs within the filesystem while also allowing custom ordering. Let's look at an example. First, here's our example folder structure:

├── docs
│   └── directory
│       ├── index.mdx
│       ├── file.mdx
│       ├── another-file.mdx
│       └── nested-directory
│           ├── index.mdx
│           └── nested-file.mdx

Here's how this folder structure could be represented as a sidebar navigation, in this example it would be the file website/data/docs-nav-data.json:

    "title": "Directory",
    "routes": [
        "title": "Overview",
        "path": "directory"
        "title": "File",
        "path": "directory/file"
        "title": "Another File",
        "path": "directory/another-file"
        "title": "Nested Directory",
        "routes": [
            "title": "Overview",
            "path": "directory/nested-directory"
            "title": "Nested File",
            "path": "directory/nested-directory/nested-file"

A couple more important notes:

  • Within this data structure, ordering is flexible, but hierarchy is not. The structure of the sidebar must correspond to the structure of the content directory. So while you could put file and another-file in any order in the sidebar, or even leave one or both of them out, you could not decide to un-nest the nested-directory object without also un-nesting it in the filesystem.
  • The title property on each node in the nav-data tree is the human-readable name in the navigation.
  • The path property on each leaf node in the nav-data tree is the URL path where the .mdx document will be rendered, and the
  • Note that "index" files must be explicitly added. These will be automatically resolved, so the path value should be, as above, directory rather than directory/index. A common convention is to set the title of an "index" node to be "Overview".

Below we will discuss a couple of more unusual but still helpful patterns.

Index-less Categories

Sometimes you may want to include a category but not have a need for an index page for the category. This can be accomplished, but as with other branch and leaf nodes, a human-readable title needs to be set manually. Here's an example of how an index-less category might look:

├── docs
│   └── indexless-category
│       └── file.mdx
// website/data/docs-nav-data.json
    "title": "Indexless Category",
    "routes": [
        "title": "File",
        "path": "indexless-category/file"

Custom or External Links

Sometimes you may have a need to include a link that is not directly to a file within the docs hierarchy. This can also be supported using a different pattern. For example:

    "name": "Directory",
    "routes": [
        "title": "File",
        "path": "directory/file"
        "title": "Another File",
        "path": "directory/another-file"
        "title": "Tao of HashiCorp",
        "href": ""

If the link provided in the href property is external, it will display a small icon indicating this. If it's internal, it will appear the same way as any other direct file link.

Changing the Release Version

To change the version displayed for download on the website, head over to data/version.js and change the number there. It's important to note that the version number must match a version that has been released and is live on -- if it does not, the website will be unable to fetch links to the binaries and will not compile. So this version number should be changed only after a release.

Displaying a Prerelease

If there is a prerelease of any type that should be displayed on the downloads page, this can be done by editing pages/downloads/index.jsx. By default, the download component might look something like this:


To add a prerelease, an extra prerelease property can be added to the component as such:

    type: 'release candidate', // the type of prerelease: beta, release candidate, etc.
    name: 'v1.0.0', // the name displayed in text on the website
    version: '1.0.0-rc1', // the actual version tag that was pushed to

This configuration would display something like the following text on the website, emphasis added to the configurable parameters:

A {{ release candidate }} for <Product> {{ v1.0.0 }} is available! The release can be <a href='<product>/{{ 1.0.0-rc1 }}'>downloaded here</a>.

You may customize the parameters in any way you'd like. To remove a prerelease from the website, simply delete the prerelease parameter from the above component.


This website structures URLs based on the filesystem layout. This means that if a file is moved, removed, or a folder is re-organized, links will break. If a path change is necessary, it can be mitigated using redirects. It's important to note that redirects should only be used to cover for external links -- if you are moving a path which internal links point to, the internal links should also be adjusted to point to the correct page, rather than relying on a redirect.

To add a redirect, head over to the file. It has a miscRedirectsMap containing source keys and destination values. Enter both the source key and the destination value for every redirect you want to add and save the file. Let's look at an example:

const miscRedirectsMap = {
  '/cloud': '',

This redirect rule will send all incoming links to /cloud to For more details on the redirects file format, check out the docs on vercel. All redirects will work both locally and in production exactly the same way, so feel free to test and verify your redirects locally. In the past testing redirects has required a preview deployment -- this is no longer the case. Please note however that if you add a redirect while the local server is running, you will need to restart it in order to see the effects of the redirect.

There is still one caveat though: redirects do not apply to client-side navigation. By default, all links in the navigation and docs sidebar will navigate purely on the client side, which makes navigation through the docs significantly faster, especially for those with low-end devices and/or weak internet connections. In the future, we plan to convert all internal links within docs pages to behave this way as well. This means that if there is a link on this website to a given piece of content that has changed locations in some way, we need to also directly change existing links to the content. This way, if a user clicks a link that navigates on the client side, or if they hit the url directly and the page renders from the server side, either one will work perfectly.

Let's look at an example. Say you have a page called /language/foo which needs to be moved to /language/nested/foo. Additionally, this is a page that has been around for a while and we know there are links into /language/foo.html left over from our previous website structure. First, you would move the page to the correct directory and then adjust the docs sidenav in data/language-navigation.js to reflect the new structure. Next, you would add to miscRedirectsMap (example below).

const miscRedirectsMap = {
  '/language/foo': '/language/nested/foo',
  '/language/foo.html': '/language/nested/foo'

Next, you would run a global search for internal links to /language/foo, and make sure to adjust them to be /language/nested/foo. This is to ensure that client-side navigation still works correctly. Adding a redirect alone is not enough.

One more example - let's say that content is being moved to an external website. A common example is guides moving to In this case, you would take all the same steps, but make a different type of change to the language-navigation file. Previously the structure looked like:

  "title": "Language",
  "routes": [{ "title": "Foo", "path": "foo" }]

If you no longer want the link to be in the side nav, you can simply remove it. If you do still want the link in the side nav, but pointing to an external destination, you need to slightly change the structure as such:

  "title": "Language",
  "routes": [
    { "title": "Foo", "href": "<product>/foo" }

As the majority of items in the side nav are internal links, the structure makes it as easy as possible to represent these links. This alternate syntax is the most concise manner than an external link can be represented. External links can be used anywhere within the docs sidenav.

It's also worth noting that it is possible to do glob-based redirects (e.g., matching /nested/*), and you may see this pattern in the redirects file. This type of redirect is much higher risk and the behavior is a bit more nuanced. If you need to add a glob redirect, please contact the website maintainers and ask about it first.

Browser Support

We support the following browsers targeting roughly the versions specified.

Chrome Edge Opera Firefox Safari
Latest Latest Latest Latest Latest


This website is hosted on Vercel and configured to automatically deploy anytime you push code to the master branch. Any time a pull request is submitted that changes files, a deployment preview will appear in the GitHub checks which can be used to validate the way docs changes will look live. Deployments from master will look and behave the same way as deployment previews.

More About stable-website

Terraform has a special stable-website branch with docs for the most recent release. When the website is deployed, it uses the current content of stable-website. This is also the case for Terraform CDK. However, this repo does not have a stable-website branch; instead, it uses the master branch.

When we release a new version of Terraform, we automatically force-push the corresponding commit to stable-website. (We also automatically update the ext/terraform submodule in this repo, but that's only for convenience when doing local previews; normal deployment to ignores the current state of the submodules.)

Between releases, we update docs on the master branch and on the current release's maintenance branch (like v0.14). By default, we assume these updates are relevant to a future release, so we don't display them on the website yet. If a docs update should be shown immediately, cherry-pick it onto stable-website after it has been merged to master and/or the maintenance branch.

This happens routinely, so anyone who can merge to master should also be able to merge to (or directly push) stable-website. Whoever clicks the merge button should make sure they know whether this commit needs a cherry-pick.

Be aware: Since stable-website gets forcibly reset during releases, make sure to never commit new changes to stable-website. You should only commit cherry-picks from a long-lived branch.