GitLab CI to App Engine

Auto Deploy to Google App Engine from GitLab CI

Requirements

• GitLab repository (Maintainer permission)
• Google Cloud PLatform project (Full permissions)

Getting Started

Create Service Account

Visit iam-admin to create a new Service Account. Add list of roles below:

1. App Engine Admin
2. Storage Object Admin
3. Cloud Build Editor
4. Service Account User

After that, create and download the JSON key

Config GitLab CI

In your Repo, go to Settings -> CICD then Explain Variables section, add 3 variables:

1. PROJECT_ID: The ID of project
2. PROJECT_REGION: Default project region
3. SERVICE_ACCOUT: Paste the content of Service Account you have downloaded

Note: Just need the type is Variable.

Config .gitlab-ci.yml

Create a new .gitlab-ci.yml if not:

image: google/cloud-sdk:alpine

deploy_production:
  stage: deploy
  environment: Production
  only:
  - master
  script:
  - echo $SERVICE_ACCOUNT > /tmp/$CI_PIPELINE_ID.json
  - gcloud auth activate-service-account --key-file /tmp/$CI_PIPELINE_ID.json
  - gcloud --quiet --project $PROJECT_ID app deploy app-production.yaml

deploy_staging:
  stage: deploy
  environment: Staging
  only:
  - staging
  script:
  - echo $SERVICE_ACCOUNT > /tmp/$CI_PIPELINE_ID.json
  - gcloud auth activate-service-account --key-file /tmp/$CI_PIPELINE_ID.json
  - gcloud --quiet --project $PROJECT_ID app deploy app-staging.yaml

deploy_development:
  stage: deploy
  environment: Development
  only:
  - cicd
  script:
  - echo $SERVICE_ACCOUNT > /tmp/$CI_PIPELINE_ID.json
  - gcloud auth activate-service-account --key-file /tmp/$CI_PIPELINE_ID.json
  - gcloud --quiet --project $PROJECT_ID app deploy app-development.yaml

after_script:
- rm /tmp/$CI_PIPELINE_ID.json

In this configuration, we will deploy develop branch to Development, staging branch to Staging and master branch to Production with different app-<environment>.yaml config for each environment.

Note: Add dispatch.yaml to your deploy command if you need map routes