server-deploy-k8s.yml

# This pipeline runs after docker-build.yml
version: v1.0
name: Deploy server to Kubernetes
agent:
  machine:
    type: e1-standard-2
    os_image: ubuntu1804
blocks:
  - name: Deploy server to Kubernetes
    task:
      # For info on creating secrets, see:
      # https://docs.semaphoreci.com/article/66-environment-variables-and-secrets
      secrets:
        - name: gcr-secret

      # Set environment variables that your project requires.
      # See https://docs.semaphoreci.com/article/66-environment-variables-and-secrets
      env_vars:
        - name: CLUSTER_NAME
          value: semaphore-demo-javascript-server
      prologue:
        commands:
          # Authenticate using the file injected from the secret
          - gcloud auth activate-service-account --key-file=.secrets.gcp.json
          # Don't forget -q to silence confirmation prompts
          - gcloud auth configure-docker -q
          - gcloud config set project $GCP_PROJECT_ID
          - gcloud config set compute/zone $GCP_PROJECT_DEFAULT_ZONE
          # Get kubectl config file
          - gcloud container clusters get-credentials $CLUSTER_NAME --zone $GCP_PROJECT_DEFAULT_ZONE --project $GCP_PROJECT_ID
          - checkout
          - cd src/server
      jobs:
      - name: Deploy
        commands:
          - kubectl get nodes
          - kubectl get pods

          # Our deployment.yml instructs Kubernetes to pull container image
          # named semaphoredemos/semaphore-demo-javascript-server:$SEMAPHORE_WORKFLOW_ID
          #
          # envsubst is a tool which will replace $SEMAPHORE_WORKFLOW_ID with
          # its current value. The same variable was used in server-docker-build.yml
          # pipeline to tag and push a container image.
          - envsubst < deployment.yml | tee helloWorld
          - mv helloWorld deployment.yml

          # Perform declarative deployment:
          - kubectl apply -f deployment.yml

  # If deployment to production succeeded, let's create a new version of
  # our `latest` Docker image.
  - name: Tag latest release
    task:
      secrets:
        - name: gcr-secret
      prologue:
        commands:
          # Authenticate using the file injected from the secret
          - gcloud auth activate-service-account --key-file=.secrets.gcp.json
          # Don't forget -q to silence confirmation prompts
          - gcloud auth configure-docker -q
          - gcloud config set project $GCP_PROJECT_ID
          - gcloud config set compute/zone $GCP_PROJECT_DEFAULT_ZONE
          - checkout
          - cd src/server
      jobs:
      - name: docker tag latest
        commands:
          - docker pull "gcr.io/$GCP_PROJECT_ID/semaphore-demo-javascript-server:$SEMAPHORE_WORKFLOW_ID"
          - docker tag "gcr.io/$GCP_PROJECT_ID/semaphore-demo-javascript-server:$SEMAPHORE_WORKFLOW_ID" "gcr.io/$GCP_PROJECT_ID/semaphore-demo-javascript-server:latest"
          - docker push "gcr.io/$GCP_PROJECT_ID/semaphore-demo-javascript-server:latest"