Circle CI / Google Container Engine scripts

Helper scripts for continuous deployment with Circle CI and Google Container Engine

Example

my-app-deployment.yml

apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: my-node-app-deployment
spec:
  template:
    metadata:
      labels:
        app: my-node-app
    spec:
      containers:
        - image: gcr.io/gcloud-project-123456/my-node-app:latest
          name: my-node-app

circle.yml

machine:
  node:
    version: 6.7.0
  environment:
    GCLOUD_PROJECT_NAME: gcloud-project-123456
    GCLOUD_CLUSTER_NAME: my-cluster
    GCLOUD_COMPUTE_ZONE: us-central1-b
    DOCKER_IMAGE_NAME: gcr.io/gcloud-project-123456/my-node-app
    DEBIAN_FRONTEND: noninteractive
  services:
    - docker

dependencies:
  override:
    - wget -i https://raw.githubusercontent.com/goodatlas/circleci-gke-scripts/1.0/scripts.txt -P ${HOME}/scripts
    - chmod a+x ${HOME}/scripts/*.sh
    - npm install

test:
  override:
    - npm test

deployment:
  prod:
    branch: master
    commands:
      - ${HOME}/scripts/sdk-setup.sh
      - ${HOME}/scripts/gcr-upload.sh
      - ${HOME}/scripts/k8s-deploy.sh my-node-app-deployment -c my-node-app

Scripts

sdk-setup.sh

Configures Google Cloud SDK.

$ ./sdk-setup.sh [OPTIONS]

Options:

• -p | --project - Google cloud project. Default $GCLOUD_PROJECT_NAME
• -c | --cluster - Google cloud cluster. Default $GCLOUD_CLUSTER_NAME
• -z | --zone - Google cloud compute zone. Default $GCLOUD_COMPUTE_ZONE

gcr-upload.sh

Builds docker image and pushes it to Google Container Registry.

$ ./gcr-upload.sh [IMAGE_NAME]

Arguments:

• IMAGE_NAME - Name for the docker image to be created. Default $DOCKER_IMAGE_NAME

k8s-deploy.sh

Updates image of a running container managed by a deployment.

$ ./k8s-deploy.sh DEPLOYMENT [OPTIONS]

Arguments:

• DEPLOYMENT - Name of the deployment.

Options:

• -c | --container - Name of the container. Default DEPLOYMENT name
• -i | --image - Name of the image. Default $DOCKER_IMAGE_NAME

Notes

• You must define a new environment variable with the name GCLOUD_SERVICE_KEY and use the base64 encoded JSON key from Google as the value. Go here for more instructions Circle CI Guide - Authentication with Google Cloud Platform
• Resource: Circle CI Guide - Continuous Deployment with Google Container Engine