mirror of
https://github.com/nmasur/dotfiles
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281 lines
9.7 KiB
YAML
281 lines
9.7 KiB
YAML
name: 'Terraform'
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env:
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AWS_ACCOUNT_NUMBER: ''
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AWS_PLAN_ROLE_NAME: github_actions_plan
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AWS_APPLY_ROLE_NAME: github_actions_admin
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# Always required. Used for authenticating to AWS, but can also act as your
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# default region if you don't want to specify in the provider configuration.
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AWS_REGION: us-east-1
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# You must change these to fit your project.
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TF_VAR_project: change-me
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TF_VAR_label: change-me
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TF_VAR_owner: Your Name Here
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# If storing Terraform in a subdirectory, specify it here.
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TERRAFORM_DIRECTORY: .
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# Pinned versions of tools to use.
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# Check for new releases:
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# - https://github.com/hashicorp/terraform/releases
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# - https://github.com/fugue/regula/releases
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# - https://github.com/terraform-linters/tflint/releases
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TERRAFORM_VERSION: 1.2.6
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REGULA_VERSION: 2.9.0
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TFLINT_VERSION: 0.39.1
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# Terraform configuration options
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TERRAFORM_PARALLELISM: 10
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# These variables are passed to Terraform based on GitHub information.
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TF_VAR_repo: ${{ github.repository }}
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# This workflow is triggered in the following ways.
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on:
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# Any push or merge to these branches.
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push:
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branches:
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- dev
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- prod
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# Any pull request targeting these branches (plan only).
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pull_request:
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branches:
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- dev
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- prod
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# Any manual trigger on these branches.
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workflow_dispatch:
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branches:
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- dev
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- prod
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# -------------------------------------------------------------------
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# The rest of this workflow can operate without adjustments. Edit the
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# below content at your own risk!
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# -------------------------------------------------------------------
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# Used to connect to AWS IAM
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permissions:
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id-token: write
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contents: read
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pull-requests: write
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# Only run one workflow at a time for each Terraform state. This prevents
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# lockfile conflicts, especially during PR vs push.
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concurrency: terraform-${{ github.base_ref || github.ref }}
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jobs:
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terraform:
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name: 'Terraform'
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# Change this if you need to run your deployment on-prem.
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runs-on: ubuntu-latest
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steps:
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# Downloads the current repo code to the runner.
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- name: Checkout Repo Code
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uses: actions/checkout@v3
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# Enable access to KVM, required to build an image
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- name: Enable KVM group perms
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run: |
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echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
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sudo udevadm control --reload-rules
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sudo udevadm trigger --name-match=kvm
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# Login to AWS
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- name: AWS Assume Role
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uses: aws-actions/configure-aws-credentials@v1.6.1
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with:
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role-to-assume: ${{ env.AWS_ROLE_ARN }}
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aws-region: ${{ env.AWS_REGION }}
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# Install Nix
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- name: Install Nix
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uses: cachix/install-nix-action@v17
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with:
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extra_nix_config: |
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substituters = s3://insert-cache-bucket https://cache.nixos.org/
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trusted-public-keys = insert-cache-bucket:M6PsZjHXcLvbQyPUBLICKEYGVoNwI84g1FBQzouRU= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
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# Build the image
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- name: Build Image
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run: nix build .#aws
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# Copy the image to S3
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- name: Upload Image to Cache
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env:
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NIX_CACHE_PRIVATE_KEY: ${{ secrets.NIX_CACHE_PRIVATE_KEY }}
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run: |
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echo "$NIX_CACHE_PRIVATE_KEY" > cache.key
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nix store sign --key-file cache.key $(readlink result)
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nix copy --to s3://t2-aws-nixos-test $(readlink result)
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rm cache.key
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# Exports all GitHub Secrets as environment variables prefixed by
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# "TF_VAR_", which exposes them to Terraform. The name of each GitHub
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# Secret must match its Terraform variable name exactly.
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- name: Export Secrets to Terraform Variables
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env:
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ALL_SECRETS: ${{ toJson(secrets) }}
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run: |
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echo "$ALL_SECRETS" \
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| jq "to_entries | .[] | \"TF_VAR_\" + ( .key | ascii_downcase ) + \"=\" + .value" \
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| tr -d \" >> $GITHUB_ENV
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# Installs the Terraform binary and some other accessory functions.
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- name: Setup Terraform
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uses: hashicorp/setup-terraform@v2
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with:
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terraform_version: ${{ env.TERRAFORM_VERSION }}
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# Checks whether Terraform is formatted properly. If this fails, you
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# should install the pre-commit hook.
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- name: Check Formatting
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run: |
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terraform fmt -no-color -check -diff -recursive
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# Downloads a Terraform code lint test.
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- uses: terraform-linters/setup-tflint@v1
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name: Setup TFLint
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with:
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tflint_version: v${{ env.TFLINT_VERSION }}
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# Sets up linting with this codebase.
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- name: Init TFLint
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: tflint --init
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# Lints the current code.
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- name: Run TFLint
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: |
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tflint -f compact
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find ./modules/* -type d -maxdepth 0 | xargs -I __ tflint -f compact --disable-rule=terraform_required_providers --disable-rule=terraform_required_version __
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# Connects to remote state backend and download providers.
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- name: Terraform Init
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: |
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terraform init \
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-backend-config="role_arn=${{ env.AWS_STATE_ROLE_ARN }}" \
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-backend-config="region=us-east-1" \
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-backend-config="workspace_key_prefix=accounts/${{ env.AWS_ACCOUNT_NUMBER }}/${{ github.repository }}" \
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-backend-config="key=state.tfstate" \
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-backend-config="dynamodb_table=global-tf-state-lock"
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# Set the Terraform Workspace to the current branch name.
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- name: Set Terraform Workspace
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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shell: bash
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run: |
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export WORKSPACE=${{ github.base_ref || github.ref_name }}
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terraform workspace select ${WORKSPACE} || terraform workspace new $WORKSPACE
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echo "TF_WORKSPACE=$(echo ${WORKSPACE} | sed 's/\//_/g')" >> $GITHUB_ENV
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# Checks differences between current code and infrastructure state.
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- name: Terraform Plan
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id: plan
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: |
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terraform plan \
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-input=false \
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-no-color \
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-out=tfplan \
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-parallelism=${TERRAFORM_PARALLELISM} \
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-var-file=variables-${TF_WORKSPACE}.tfvars
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# Gets the results of the plan for pull requests.
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- name: Terraform Show Plan
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id: show
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: terraform show -no-color tfplan
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# Adds the results of the plan to the pull request.
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- name: Comment Plan
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uses: actions/github-script@v6
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if: github.event_name == 'pull_request'
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env:
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STDOUT: "```terraform\n${{ steps.show.outputs.stdout }}```"
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with:
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github-token: ${{ secrets.GITHUB_TOKEN }}
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script: |
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// 1. Retrieve existing bot comments for the PR
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const { data: comments } = await github.rest.issues.listComments({
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owner: context.repo.owner,
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repo: context.repo.repo,
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issue_number: context.issue.number,
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})
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const botComment = comments.find(comment => {
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return comment.user.type === 'Bot' && comment.body.includes('Terraform Format and Style')
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})
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// 2. Prepare format of the comment
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const output = `#### Terraform Format and Style 🖌\`${{ steps.fmt.outcome }}\`
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#### Terraform Initialization ⚙️\`${{ steps.init.outcome }}\`
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#### Terraform Validation 🤖\`${{ steps.validate.outcome }}\`
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<details><summary>Validation Output</summary>
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\`\`\`\n
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${{ steps.validate.outputs.stdout }}
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\`\`\`
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</details>
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#### Terraform Plan 📖\`${{ steps.plan.outcome }}\`
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<details><summary>Show Plan</summary>
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\`\`\`\n
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${process.env.PLAN}
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\`\`\`
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</details>
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*Pusher: @${{ github.actor }}, Action: \`${{ github.event_name }}\`, Working Directory: \`${{ env.tf_actions_working_dir }}\`, Workflow: \`${{ github.workflow }}\`*`;
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// 3. If we have a comment, update it, otherwise create a new one
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if (botComment) {
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github.rest.issues.updateComment({
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owner: context.repo.owner,
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repo: context.repo.repo,
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comment_id: botComment.id,
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body: output
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})
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} else {
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github.rest.issues.createComment({
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issue_number: context.issue.number,
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owner: context.repo.owner,
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repo: context.repo.repo,
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body: output
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})
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}
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# Downloads Regula and checks whether the plan meets compliance requirements.
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- name: Regula Compliance Check
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shell: bash
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: |
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REGULA_URL="https://github.com/fugue/regula/releases/download/v${REGULA_VERSION}/regula_${REGULA_VERSION}_Linux_x86_64.tar.gz"
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curl -sL "$REGULA_URL" -o regula.tar.gz
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tar xzf regula.tar.gz
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terraform show -json tfplan | ./regula run
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# Deploys infrastructure or changes to infrastructure.
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- name: Terraform Apply
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if: github.event_name == 'push' || github.event_name == 'workflow_dispatch'
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working-directory: ${{ env.TERRAFORM_DIRECTORY }}
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run: |
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terraform apply \
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-auto-approve \
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-input=false \
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-parallelism=${TERRAFORM_PARALLELISM} \
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tfplan
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