deploy_k8s_cluster.yaml

name: Deploy K8s Cluster
permissions: read-all

on:
  workflow_call:
    inputs:
      environment:
        required: true
        type: string

env:
  # Secrets
  TF_VAR_mesh_proxmox_host: ${{ secrets.TF_VAR_MESHDB_PROXMOX_HOST }}
  TF_VAR_mesh_proxmox_token_id: ${{ secrets.TF_VAR_MESHDB_PROXMOX_TOKEN_ID }}
  TF_VAR_mesh_proxmox_token_secret: ${{ secrets.TF_VAR_MESHDB_PROXMOX_TOKEN_SECRET }}
  TF_VAR_mesh_local_password: ${{ secrets.TF_VAR_MESHDB_LOCAL_PASSWORD }}
  TF_VAR_k3s_token: ${{ secrets.TF_VAR_K3S_TOKEN }}
  TF_VAR_DATADOG_API_KEY: ${{ secrets.DATADOG_API_KEY }}
  TF_VAR_DATADOG_SITE: ${{ secrets.DATADOG_SITE }}
  TF_VAR_longhorn_passphrase: ${{ secrets.LONGHORN_PASSPHRASE }}
  # Credentials for deployment to AWS
  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
  # S3 bucket for the Terraform state
  BUCKET_TF_STATE: ${{ secrets.BUCKET_TF_STATE}}
  TF_VAR_env_name: ${{ vars.ENV_NAME}}

jobs:
  deploy:
    runs-on: ubuntu-latest
    environment: ${{ inputs.environment }}
    steps:
      - name: Checkout
        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29 # @v4
      
      - uses: actions/setup-python@82c7e631bb3cdc910f68e0081d67478d79c6982d #@v5
        with:
          python-version: '3.11'
      
      - name: Setup ansible
        run: pip install ansible && export PATH="$HOME/.local/bin:$PATH" && ansible-galaxy collection install -r ansible/roles/requirements.yml

      - name: Setup Terraform with specified version on the runner
        uses: hashicorp/setup-terraform@651471c36a6092792c552e8b1bef71e592b462d8 # @v3
        with:
          terraform_version: 1.8.3
      
      - name: Setup backend
        run: |
          echo "bucket = \"${{ secrets.BUCKET_TF_STATE }}\"" > backend.tfvars
          echo "key    = \"terraform/state/k8s-infra-${{ vars.ENV_NAME }}.tfstate\"" >> backend.tfvars
        working-directory: ./terraform/

      - name: Terraform init
        id: init
        run: terraform init -backend-config=backend.tfvars
        working-directory: ./terraform/

      - name: Terraform format
        id: fmt
        run: terraform fmt -check
        working-directory: ./terraform/
    
      - name: Terraform validate
        id: validate
        run: terraform validate
        working-directory: ./terraform/

      - name: Setup WireGuard
        run:  |
          sudo apt-get update && sudo apt-get install -y wireguard
          echo "${{ secrets.WIREGUARD_PRIVATE_KEY }}" > privatekey
          sudo ip link add dev wg0 type wireguard
          sudo ip address add dev wg0 ${{ secrets.WIREGUARD_OVERLAY_NETWORK_IP }} peer ${{ secrets.WIREGUARD_PEER }}
          sudo wg set wg0 listen-port 48123 private-key privatekey peer ${{ secrets.WIREGUARD_PEER_PUBLIC_KEY }} allowed-ips 0.0.0.0/0 endpoint ${{ secrets.WIREGUARD_ENDPOINT }}
          sudo ip link set up dev wg0
          rm privatekey
      
      - name: Terraform Apply
        run: |
          echo "${{ secrets.SSH_PRIVATE_KEY }}" > mesh_cluster/mesh${{ vars.ENV_NAME }}
          echo "${{ secrets.SSH_PUBLIC_KEY }}" > mesh_cluster/mesh${{ vars.ENV_NAME }}.pub
          echo "${{ secrets.DATADOG_API_KEY }}" > mesh_cluster/datadog_api_key
          chmod 600 mesh_cluster/mesh${{ vars.ENV_NAME }}
          chmod 600 mesh_cluster/mesh${{ vars.ENV_NAME }}.pub
          terraform apply -auto-approve -input=false -var-file=${{ vars.ENV_NAME }}.tfvars
        working-directory: ./terraform/
      
      - name: Run playbook
        run: sleep 20 && export PATH="$HOME/.local/bin:$PATH" && ansible-playbook -i inventory.yaml k8s_infra.yaml
        working-directory: ./ansible/