Bitbucket Pipelines deployment to a Google Container Engine configuration

bitbucket-pipelines.yml

options:
  docker: true
pipelines:
  branches:
    master:
      - step:
          image: google/cloud-sdk:latest
          name: Deploy to production
          deployment: production
          caches:
          - docker
          script:
          # SETUP
          - export IMAGE_NAME=us.gcr.io/$GCLOUD_PROJECT/$BITBUCKET_REPO_SLUG:$BITBUCKET_COMMIT
          - export ENVIRONMENT=production
          - echo $GCLOUD_API_KEYFILE | base64 -d > ~/.gcloud-api-key.json
          - gcloud auth activate-service-account --key-file ~/.gcloud-api-key.json
          - gcloud config set project $GCLOUD_PROJECT
          - gcloud container clusters get-credentials $GCLOUD_CLUSTER --zone=$GCLOUD_ZONE --project $GCLOUD_PROJECT
          - gcloud auth configure-docker --quiet
          # BUILD IMAGE
          - docker build . -t $IMAGE_NAME
          # PUBLISH IMAGE
          - docker push $IMAGE_NAME
          # DEPLOYMENT
          - kubectl set image deployment $BITBUCKET_REPO_SLUG-$ENVIRONMENT $BITBUCKET_REPO_SLUG=$IMAGE_NAME --record --namespace=$K8S_NAMESPACE

@ArcherEmiya05 thanks for reaching.

The exports are defining some environment variables that will be used later in the script. The image name follows this pattern, and to about keep repeating myself recreating it, I decided to have it done in a single place and just use it.

• GCLOUD_PROJECT: it's an env var I set on my pipelines config, and it has the google cloud project I am working with
• BITBUCKET_REPO_SLUG: this env var is set by pipelines, and it has the repository name (let's say I had a repo https://github.com/adilsoncarvalho/my-project, the BITBUCKET_REPO_SLUG would be set with my-project)
• BITBUCKET_COMMIT: another env var set by pipelines. It has the SHA of the current commit you are building. I like using that as an easy way to track exactly wich point in time the image is about.

If we assume that your gcloud project is named ACORN, and the repo is names MYCODE, and the commit you are building is d670460b4b4aece5915caf5c68d12f560a9fe3e4, your image will be created as us.gcr.io/ACORN/MYCODE: d670460b4b4aece5915caf5c68d12f560a9fe3e4

Then ENVIRONMENT variable is used later to tell kubernetes on which environment that image should be deployed. This is a pattern I use, but you can use different ones, like having it separated by namespaces.

kubectl set image deployment $BITBUCKET_REPO_SLUG-$ENVIRONMENT $BITBUCKET_REPO_SLUG=$IMAGE_NAME --record --namespace=$K8S_NAMESPACE

I hope that helped :)

Thanks for a detailed explanation, this gist helps me a lot and enables me to accomplish what I want to perform. However is it necessary to do the export and setting of environment part or I can just authenticate, select the project and run a gcloud commands I need? Will there be any side effect if I skip that part, also can you help me where can I possibly find this exported image perhaps in the Cloud Console?