debian-mirror-gitlab/doc/user/infrastructure/iac/terraform_template_recipes.md

---
stage: Configure
group: Configure
info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/product/ux/technical-writing/#assignments
---

# Terraform template recipes **(FREE)**

You can customize your Terraform integration by adding the recipes on
this page to your pipeline.

If you'd like to share your own Terraform configuration, consider
[contributing a recipe](https://gitlab.com/gitlab-org/gitlab/-/blob/master/doc/user/infrastructure/iac/terraform_template_recipes.md)
to this page.

## Enable a `terraform destroy` job

Add the following snippet to your `.gitlab-ci.yml`:

```yaml
include:
  - template: Terraform.latest.gitlab-ci.yml

destroy:
  extends: .terraform:destroy
```

The `destroy` job is part of the `cleanup` stage. Like the `deploy`
job, the `destroy` job is always `manual` and is not tied to the
default branch.

## Run a custom `terraform` command in a job

To define a job that runs a custom `terraform` command, the
`gitlab-terraform` wrapper can be used in any job:

```yaml
include:
  - template: Terraform.latest.gitlab-ci.yml

state-list:
  stage: validate # you can use any stage, just make sure to define it
  script: gitlab-terraform state list
```

The `gitlab-terraform` command sets up a `terraform` command and runs
it with the given arguments.

To run this job in the Terraform state-specific [resource group](../../../ci/resource_groups/index.md),
assign the job with `resource_group`:

```yaml
include:
  - template: Terraform.latest.gitlab-ci.yml

state-list:
  stage: validate # you can use any stage, just make sure to define it
  resource_group: ${TF_STATE_NAME}
  script: gitlab-terraform state list
```

## Add custom debug tools to jobs

The default image used by Terraform template jobs contains only minimal tooling.
However, you might want to add additional tools for debugging.

To add an additional tool:

1. Install the tool in the `before_script` of a job or pipeline.
1. Use the tool in the `script` or `after_script` block.
   - If you use the `script` block, be sure to re-add the template job commands.

For example, the following snippet installs `bash` and `jq` in the `before_script` for all
jobs in the pipeline:

```yaml
include:
  - template: Terraform.latest.gitlab-ci.yml

default:
  before_script: apk add --update bash jq
```

To add it to only the `build` and `deploy` jobs, add it to those jobs directly:

```yaml
include:
  - template: Terraform.latest.gitlab-ci.yml

build:
  before_script: apk add --update bash jq

deploy:
  before_script: apk add --update bash jq
```

## Add custom container images

For debug tools and simple installations, you should
[add a custom debug tool to your job](#add-custom-debug-tools-to-jobs).
If your tool is complex or benefits from caching,
you can create a custom container image based on the
[`gitlab-terraform`](https://gitlab.com/gitlab-org/terraform-images) images.
You can use your custom image in subsequent Terraform jobs.

To define a custom container image:

1. Define a new `Dockerfile` with custom tooling. For example, install `bash` and `jq` in `.gitlab/ci/Dockerfile`:

   ```dockerfile
   FROM registry.gitlab.com/gitlab-org/terraform-images/stable:latest

   RUN apk add --update bash jq
   ```

1. In a new job, define a `prepare` stage that builds the image whenever the `Dockerfile` changes.
   - The built image is pushed to the [GitLab Container Registry](../../packages/container_registry). A tag is applied to indicate whether the image was built from a merge request or from the default branch.
1. Use your image in your Terraform jobs, such as `build` and `deploy`.
   - You can combine your image with specialized `before_script` configurations to perform setup commands, like to generate inputs for Terraform.

For example, a fully functioning pipeline configuration might look like:

```yaml
include:
  - template: Terraform.latest.gitlab-ci.yml

variables:
  IMAGE_TAG: latest

workflow:
  rules:
    - if: $CI_MERGE_REQUEST_IID
      changes:
        - .gitlab/ci/Dockerfile
      variables:
        IMAGE_TAG: ${CI_COMMIT_REF_SLUG}
    - when: always

stages:
  - prepare
  - validate
  - test
  - build
  - deploy
  - cleanup

prepare:image:
  needs: []
  stage: prepare
  image:
    name: gcr.io/kaniko-project/executor:v1.9.0-debug
    entrypoint: [""]
  rules:
    # Tag with the commit SHA if we're in an MR
    - if: $CI_MERGE_REQUEST_IID
      changes:
        - .gitlab/ci/Dockerfile
      variables:
        DOCKER_TAG: $CI_COMMIT_REF_SLUG
    # If we're on our main branch, tag with "latest"
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
      changes:
        - .gitlab/ci/Dockerfile
      variables:
        DOCKER_TAG: latest
  before_script:
    # Authenticate to the docker registry and dependency proxy
    - echo "{\"auths\":{\"$CI_REGISTRY\":{\"auth\":\"$(printf "%s:%s" "${CI_REGISTRY_USER}" "${CI_REGISTRY_PASSWORD}" | base64 | tr -d '\n')\"}}}" > /kaniko/.docker/config.json
  script:
    - /kaniko/executor
      --context "${CI_PROJECT_DIR}/.gitlab/ci"
      --cache=true
      --dockerfile "${CI_PROJECT_DIR}/.gitlab/ci/Dockerfile"
      --destination "${CI_REGISTRY_IMAGE}:${DOCKER_TAG}"

build:
  image: ${CI_REGISTRY_IMAGE}:${IMAGE_TAG}

deploy:
  image: ${CI_REGISTRY_IMAGE}:${IMAGE_TAG}
```

For an example repository, see the [GitLab Terraform template usage project](https://gitlab.com/gitlab-org/configure/examples/terraform-template-usage).