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GitHub Action
Gruntwork Terragrunt
v2.1.1
A GitHub Action for installing and running Terragrunt
Supported GitHub action inputs:
| Input Name | Description | Required | Example values |
|---|---|---|---|
| tf_version | Terraform version to be used in Action execution | true if tofu_version is not supplied |
1.4.6 |
| tofu_version | OpenTofu version to be used in Action execution | true if tf_version is not supplied |
1.6.0 |
| tg_version | Terragrunt version to be user in Action execution | true |
0.50.8 |
| tg_dir | Directory in which Terragrunt will be invoked | true |
work |
| tg_command | Terragrunt command to execute | true |
plan/apply |
| tg_comment | Add comment to Pull request with execution output | false |
0/1 |
| tg_add_approve | Automatically add "-auto-approve" to commands, enabled by default | false |
0/1 |
Supported environment variables:
| Input Name | Description |
|---|---|
| GITHUB_TOKEN | GitHub token used to add comment to Pull request |
| TF_LOG | Log level for Terraform |
| TF_VAR_name | Define custom variable name as inputs |
| INPUT_PRE_EXEC_number | Environment variable is utilized to provide custom commands that will be executed before running Terragrunt |
| INPUT_POST_EXEC_number | Environment variable is utilized to provide custom commands that will be executed after running Terragrunt |
Outputs of GitHub action:
| Input Name | Description |
|---|---|
| tg_action_exit_code | Terragrunt exit code |
| tg_action_output | Terragrunt output as plain text |
Example definition of Github Action workflow:
name: 'Terragrunt GitHub Actions'
on:
- pull_request
env:
tf_version: '1.5.7'
tg_version: '0.53.2'
working_dir: 'project'
jobs:
checks:
runs-on: ubuntu-latest
steps:
- name: 'Checkout'
uses: actions/checkout@main
- name: Check terragrunt HCL
uses: gruntwork-io/terragrunt-action@v2
with:
tf_version: ${{ env.tf_version }}
tg_version: ${{ env.tg_version }}
tg_dir: ${{ env.working_dir }}
tg_command: 'hclfmt --terragrunt-check --terragrunt-diff'
plan:
runs-on: ubuntu-latest
needs: [ checks ]
steps:
- name: 'Checkout'
uses: actions/checkout@main
- name: Plan
uses: gruntwork-io/terragrunt-action@v2
with:
tf_version: ${{ env.tf_version }}
tg_version: ${{ env.tg_version }}
tg_dir: ${{ env.working_dir }}
tg_command: 'plan'
deploy:
runs-on: ubuntu-latest
needs: [ plan ]
environment: 'prod'
if: github.ref == 'refs/heads/main'
steps:
- name: 'Checkout'
uses: actions/checkout@main
- name: Deploy
uses: gruntwork-io/terragrunt-action@v2
with:
tf_version: ${{ env.tf_version }}
tg_version: ${{ env.tg_version }}
tg_dir: ${{ env.working_dir }}
tg_command: 'apply'Example of passing custom code before running Terragrunt:
...
- name: Plan
uses: gruntwork-io/terragrunt-action@v2
env:
# configure git to use custom token to clone repository.
INPUT_PRE_EXEC_1: |
git config --global url."https://user:${{secrets.PAT_TOKEN}}@github.com".insteadOf "https://github.com"
# print git configuration
INPUT_PRE_EXEC_2: |
git config --global --list
with:
tg_command: 'plan'
...Example of using GitHub cache for Terraform plugins (providers):
...
env:
tf_version: 1.5.7
tg_version: 0.53.2
working_dir: project
TF_PLUGIN_CACHE_DIR: ${{ github.workspace }}/.terraform.d/plugin-cache
jobs:
plan:
runs-on: ubuntu-latest
steps:
- name: Checkout
uses: actions/checkout@main
- name: Create Terraform Plugin Cache Dir
run: mkdir -p $TF_PLUGIN_CACHE_DIR
- name: Terraform Plugin Cache
uses: actions/[email protected]
with:
path: ${{ env.TF_PLUGIN_CACHE_DIR }}
key: ${{ runner.os }}-terraform-plugin-cache-${{ hashFiles('**/.terraform.lock.hcl') }}
- name: Plan
uses: gruntwork-io/terragrunt-action@v2
env:
TF_PLUGIN_CACHE_DIR: /github/workspace/.terraform.d/plugin-cache
with:
tf_version: ${{ env.tf_version }}
tg_version: ${{ env.tg_version }}
tg_dir: ${{ env.working_dir }}
tg_command: plan
...