1- Architecture

Link to the Architecture Diagram

2- Create new GCP Project

• Get the billing accounts list

  gcloud alpha billing accounts list

• Get the Organisation ID

  ORGANISATION_ID=$(gcloud organizations describe codeworks.fr --format=json | jq '.name' | cut -f 2 -d '/' | sed 's/"//g')

• Name the project

  PROJECT_NAME=codeday-canary-deployment-demo

• Create new project

  gcloud projects create ${PROJECT_NAME} --organization=${ORGANISATON_ID}

• Get the project number

  PROJECT_NUMBER=$(gcloud projects describe $PROJECT_NAME --format='value(projectNumber)')

• Link the project to the billing account

  gcloud alpha billing accounts projects link ${PROJECT_NUMBER} --account-id=0150EE-171E17-3E357F

• Inspects

  • From your terminal

    gcloud projects list

  • From the Google Cloud Console

3- Init GCP configuration

• Configure the gcloud tool to match account / project / zone to use from scratch

  gcloud init

• Display zones list

  gcloud compute zones list

• Another init !! to init the compute zone

  gcloud init

• Checl all of the configuration

  gcloud config list

4- Google Container Registry

• Build docker images

  • Stable version

  cd nodeapp/stable
  
  docker build -t gcr.io/${PROJECT_NAME}/nodeapp-stable:1.0.0 .

  • Canary version

  cd nodeapp/canary
  
  docker build -t gcr.io/${PROJECT_NAME}/nodeapp-canary:1.0.0 .

• Launch the Docker image in your local host

  • Launch the stable image

    docker run --publish 9000:7070 --detach --name stable-app gcr.io/${PROJECT_NAME}/nodeapp-stable:1.0.0

  • Launch the canary image

    docker run --publish 9001:7070 --detach --name canary-app gcr.io/${PROJECT_NAME}/nodeapp-canary:1.0.0

  • Test containers using localhost

    Stable Version

    Canary Version

  • Test containers using internal IP address

    Stable Version

    Canary Version

• Login :set up a credential helper

  gcloud auth configure-docker

• Push all of images to the GCR

  • Stable version

    docker push gcr.io/${PROJECT_NAME}/nodeapp-stable:1.0.0

  • Canary version

    docker push gcr.io/${PROJECT_NAME}/nodeapp-canary:1.0.0

5- Create new cluster

gcloud container clusters create stable-canary-cluster --num-nodes=2

6- It's time to use Kubectl !

• Create a new Namespace

  kubectl create ns stable-canary

• Create Deployment Resource

  • Stable Application

    cat ./k8s/app-stable.deployment.yml | sh ./k8s/config.sh | kubectl create --save-config --record -f -

  • Canary Application

    cat ./k8s/app-canary.deployment.yml | sh ./k8s/config.sh | kubectl create --save-config --record -f -

• Create Service Resource

  kubectl create -f ./k8s/app.service.yml -n stable-canary --save-config --record

7- Check Running Applications

• Open a browser and pick the external service IP address and launch it

• Using a shell script : update the script ./curl_loadbalancer_service.sh with the right external service IP address

  ./curl_loadbalancer_service.sh

8 - Scale Canary / Stable version : 50% / 50 %

• Stable version

  update app-stable.deployment.yml => replicas: 2

  cat ./k8s/app-stable.deployment.yml | sh ./k8s/config.sh | kubectl apply --record -f -

• Canary version

  update app-canary.deployment.yml => replicas: 2

  cat ./k8s/app-canary.deployment.yml | sh ./k8s/config.sh | kubectl apply --record -f -

9 - Scale down Stable version and route all traffic to the Canary version :0% / 100%

• Stable version

  update app-stable.deployment.yml => replicas: 0

  cat ./k8s/app-stable.deployment.yml | sh ./k8s/config.sh | kubectl apply --record -f -

• Canary version

  update app-canary.deployment.yml => replicas: 4

  cat ./k8s/app-canary.deployment.yml | sh ./k8s/config.sh | kubectl apply --record -f -

10- Deleting your GCP resources

• Delete the Services

  kubectl delete service nodeapp-service -n stable-canary

• Delete the Deloyments

  kubectl delete deployment stable -n stable-canary
  kubectl delete deployment canary -n stable-canary

• Delete the Namespace

  kubectl delete ns stable-canary

• Delete the Cluster

  gcloud container clusters delete stable-canary-cluster

• Delete the specific images

  gcloud container images delete gcr.io/${PROJECT_NAME}/nodeapp-stable:1.0.0
  gcloud container images delete gcr.io/${PROJECT_NAME}/nodeapp-canary:1.0.0

• Delete the GCP Project

  gcloud projects delete $PROJECT_NAME