98 lines
4.6 KiB
Markdown
98 lines
4.6 KiB
Markdown
---
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stage: Configure
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group: Configure
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# Infrastructure as code with Terraform and GitLab **(FREE)**
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## Motivation
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The Terraform integration features in GitLab enable your GitOps / Infrastructure-as-Code (IaC)
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workflows to tie into GitLab authentication and authorization. These features focus on
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lowering the barrier to entry for teams to adopt Terraform, collaborate effectively in
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GitLab, and support Terraform best practices.
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## Quick Start
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Use the following `.gitlab-ci.yml` to set up a basic Terraform project integration
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for GitLab versions 13.5 and later:
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```yaml
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include:
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- template: Terraform.latest.gitlab-ci.yml
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variables:
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# If not using GitLab's HTTP backend, remove this line and specify TF_HTTP_* variables
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TF_STATE_NAME: default
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TF_CACHE_KEY: default
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# If your terraform files are in a subdirectory, set TF_ROOT accordingly
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# TF_ROOT: terraform/production
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```
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This template uses `.latest.`, instead of stable, and may include breaking changes.
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This template also includes some opinionated decisions, which you can override:
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- Including the latest [GitLab Terraform Image](https://gitlab.com/gitlab-org/terraform-images).
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- Using the [GitLab managed Terraform State](#gitlab-managed-terraform-state) as
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the Terraform state storage backend.
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- Creating [four pipeline stages](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Terraform.latest.gitlab-ci.yml):
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`init`, `validate`, `build`, and `deploy`. These stages
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[run the Terraform commands](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Terraform/Base.latest.gitlab-ci.yml)
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`init`, `validate`, `plan`, `plan-json`, and `apply`. The `apply` command only runs on `master`.
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This video from January 2021 walks you through all the GitLab Terraform integration features:
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<div class="video-fallback">
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See the video: <a href="https://www.youtube.com/watch?v=iGXjUrkkzDI">Terraform with GitLab</a>.
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</div>
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<figure class="video-container">
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<iframe src="https://www.youtube.com/embed/iGXjUrkkzDI" frameborder="0" allowfullscreen="true"> </iframe>
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</figure>
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## GitLab Managed Terraform state
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[Terraform remote backends](https://www.terraform.io/docs/backends/index.html)
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enable you to store the state file in a remote, shared store. GitLab uses the
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[Terraform HTTP backend](https://www.terraform.io/docs/backends/types/http.html)
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to securely store the state files in local storage (the default) or
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[the remote store of your choice](../../administration/terraform_state.md).
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The GitLab managed Terraform state backend can store your Terraform state easily and
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securely. It spares you from setting up additional remote resources like
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Amazon S3 or Google Cloud Storage. Its features include:
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- Supporting encryption of the state file both in transit and at rest.
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- Locking and unlocking state.
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- Remote Terraform plan and apply execution.
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Read more on setting up and [using GitLab Managed Terraform states](terraform_state.md)
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WARNING:
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Like any other job artifact, Terraform plan data is [viewable by anyone with Guest access](../permissions.md) to the repository.
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Neither Terraform nor GitLab encrypts the plan file by default. If your Terraform plan
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includes sensitive data such as passwords, access tokens, or certificates, GitLab strongly
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recommends encrypting plan output or modifying the project visibility settings.
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## Terraform integration in Merge Requests
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Collaborating around Infrastructure as Code (IaC) changes requires both code changes
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and expected infrastructure changes to be checked and approved. GitLab provides a
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solution to help collaboration around Terraform code changes and their expected
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effects using the Merge Request pages. This way users don't have to build custom
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tools or rely on 3rd party solutions to streamline their IaC workflows.
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Read more on setting up and [using the merge request integrations](mr_integration.md).
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## The GitLab terraform provider
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WARNING:
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The GitLab Terraform provider is released separately from GitLab.
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We are working on migrating the GitLab Terraform provider for GitLab.com.
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You can use the [GitLab Terraform provider](https://github.com/gitlabhq/terraform-provider-gitlab)
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to manage various aspects of GitLab using Terraform. The provider is an open source project,
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owned by GitLab, where everyone can contribute.
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The [documentation of the provider](https://registry.terraform.io/providers/gitlabhq/gitlab/latest/docs)
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is available as part of the official Terraform provider documentations.
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