Terraform Deploy - development #59
Workflow file for this run
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run-name: 'Terraform Deploy - ${{inputs.environment}}' | |
name: 'Terraform Deploy' | |
on: | |
workflow_dispatch: | |
inputs: | |
environment: | |
description: 'Azure deployment environment' | |
required: true | |
default: 'development' | |
type: choice | |
options: | |
- development | |
- staging | |
- production | |
defaults: | |
run: | |
working-directory: ./terraform | |
# Permissions for OIDC authentication | |
permissions: | |
id-token: write | |
contents: write | |
issues: write | |
env: | |
ARM_CLIENT_ID: ${{ secrets.AZURE_CLIENT_ID }} | |
ARM_SUBSCRIPTION_ID: ${{ secrets.AZURE_SUBSCRIPTION_ID }} | |
ARM_TENANT_ID: ${{ secrets.AZURE_TENANT_ID }} | |
ARM_USE_OIDC: true | |
ARM_SKIP_PROVIDER_REGISTRATION: true | |
jobs: | |
terraform-plan: | |
name: 'Terraform Plan' | |
runs-on: ubuntu-latest | |
environment: ${{ inputs.environment }} | |
outputs: | |
tfplanExitCode: ${{ steps.tf-plan.outputs.exitcode }} | |
steps: | |
# Checkout the repository to the GitHub Actions runner | |
- name: Checkout | |
uses: actions/checkout@v4 | |
# Install the latest version of the Terraform CLI | |
- name: Setup Terraform | |
uses: hashicorp/setup-terraform@v3 | |
with: | |
terraform_version: 1.5.6 | |
terraform_wrapper: false | |
# Initialise a new or existing Terraform working directory by creating initial files, loading any remote state, downloading modules, etc. | |
- name: Terraform Init | |
run: > | |
terraform init | |
-backend-config="resource_group_name=${{ secrets.TERRAFORM_STATE_RESOURCE_GROUP }}" | |
-backend-config="storage_account_name=${{ secrets.TERRAFORM_STATE_STORAGE_ACCOUNT_NAME }}" | |
-backend-config="container_name=${{ secrets.TERRAFORM_STATE_STORAGE_CONTAINER_NAME }}" | |
-backend-config="key=${{ secrets.TERRAFORM_STATE_KEY }}" | |
# Checks that all Terraform configuration files adhere to a canonical format | |
# Will fail the build if not | |
- name: Terraform Format | |
run: terraform fmt -check | |
# Generates Terraform input variables | |
- name: Generate Terraform Variables | |
shell: bash | |
env: | |
WEB_SECRETS: ${{ toJSON(secrets) }} | |
WEB_VARS: ${{ toJSON(vars) }} | |
run: | | |
printf '%s\n' "$WEB_SECRETS" > tmp-secrets.json | |
printf '%s\n' "$WEB_VARS" > tmp-vars.json | |
jq 'with_entries(.key |= ascii_downcase)' tmp-secrets.json > web-secrets.auto.tfvars.json | |
jq 'with_entries(.key |= ascii_downcase)' tmp-vars.json > web-vars.auto.tfvars.json | |
# Generates an execution plan for Terraform | |
# An exit code of 0 indicated no changes, 1 a terraform failure, 2 there are pending changes. | |
- name: Terraform Plan | |
id: tf-plan | |
run: | | |
export exitcode=0 | |
terraform plan -detailed-exitcode -no-color -out tfplan || export exitcode=$? | |
echo "exitcode=$exitcode" >> $GITHUB_OUTPUT | |
if [ $exitcode -eq 1 ]; then | |
echo Terraform Plan Failed! | |
exit 1 | |
else | |
exit 0 | |
fi | |
# Save Terraform Plan | |
- name: Publish Terraform Plan | |
uses: actions/upload-artifact@v4 | |
with: | |
name: tfplan | |
path: terraform/tfplan | |
# Create string output of Terraform Plan | |
- name: Create String Output | |
id: tf-plan-string | |
run: | | |
TERRAFORM_PLAN=$(terraform show -no-color tfplan) | |
delimiter="$(openssl rand -hex 8)" | |
echo "summary<<${delimiter}" >> $GITHUB_OUTPUT | |
echo "## Terraform Plan Output" >> $GITHUB_OUTPUT | |
echo "<details><summary>Click to expand</summary>" >> $GITHUB_OUTPUT | |
echo "" >> $GITHUB_OUTPUT | |
echo '```terraform' >> $GITHUB_OUTPUT | |
echo "$TERRAFORM_PLAN" >> $GITHUB_OUTPUT | |
echo '```' >> $GITHUB_OUTPUT | |
echo "</details>" >> $GITHUB_OUTPUT | |
echo "${delimiter}" >> $GITHUB_OUTPUT | |
# Publish Terraform Plan as task summary | |
- name: Publish Terraform Plan to Task Summary | |
env: | |
SUMMARY: ${{ steps.tf-plan-string.outputs.summary }} | |
run: | | |
echo "$SUMMARY" >> $GITHUB_STEP_SUMMARY | |
terraform-apply: | |
name: 'Terraform Apply' | |
if: needs.terraform-plan.outputs.tfplanExitCode == 2 | |
runs-on: ubuntu-latest | |
environment: ${{ inputs.environment }} | |
needs: [terraform-plan] | |
steps: | |
# Request review of Terraform Plan for deployment approval | |
- name: Terraform Plan Approval | |
uses: trstringer/manual-approval@v1 | |
with: | |
secret: ${{ github.TOKEN }} | |
approvers: sam-c-dfe,DanielClarkeEducation,RobertGHippo | |
minimum-approvals: 1 | |
issue-title: "Terraform deployment to ${{ inputs.environment }}" | |
issue-body: "Please review the Terraform Plan on the task summary and approve or deny the deployment" | |
# Checkout the repository to the GitHub Actions runner | |
- name: Checkout | |
uses: actions/checkout@v4 | |
# Install the latest version of Terraform CLI and configure the Terraform CLI configuration file with a Terraform Cloud user API token | |
- name: Setup Terraform | |
uses: hashicorp/setup-terraform@v3 | |
with: | |
terraform_version: 1.5.6 | |
# Initialise a new or existing Terraform working directory by creating initial files, loading any remote state, downloading modules, etc. | |
- name: Terraform Init | |
run: > | |
terraform init | |
-backend-config="resource_group_name=${{ secrets.TERRAFORM_STATE_RESOURCE_GROUP }}" | |
-backend-config="storage_account_name=${{ secrets.TERRAFORM_STATE_STORAGE_ACCOUNT_NAME }}" | |
-backend-config="container_name=${{ secrets.TERRAFORM_STATE_STORAGE_CONTAINER_NAME }}" | |
-backend-config="key=${{ secrets.TERRAFORM_STATE_KEY }}" | |
# Generates Terraform input variables | |
- name: Generate Terraform Variables | |
shell: bash | |
env: | |
WEB_SECRETS: ${{ toJSON(secrets) }} | |
WEB_VARS: ${{ toJSON(vars) }} | |
run: | | |
printf '%s\n' "$WEB_SECRETS" > tmp-secrets.json | |
printf '%s\n' "$WEB_VARS" > tmp-vars.json | |
jq 'with_entries(.key |= ascii_downcase)' tmp-secrets.json > web-secrets.auto.tfvars.json | |
jq 'with_entries(.key |= ascii_downcase)' tmp-vars.json > web-vars.auto.tfvars.json | |
# Download saved plan from artifacts | |
- name: Download Terraform Plan | |
uses: actions/download-artifact@v4 | |
with: | |
name: tfplan | |
path: terraform/tfplan | |
# Terraform Apply | |
- name: Terraform Apply | |
run: terraform apply -auto-approve tfplan/tfplan |