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GKE development

Deployment

In this Solutions Builder, we use skaffold to deploy for both backend microservices and frontend application. The same steps apply for deploying to GKE and Cloud Run.

Initialize GKE cluster

If you haven't set up the GKE cluster by following the INSTALLATION.md, you can initialize GKE cluster via Terraform. This will create the following resources:

  • A GKE cluster
  • Service account for GKE
cd $BASE_DIR/terraform/stages/gke
terraform init -backend-config=bucket=$TF_BUCKET_NAME
terraform apply -auto-approve

Deploy a service to GKE cluster

Once you complete the development, run the following to deploy to remote GKE cluster:

export PROJECT_ID=<my-gcp-project-id>
export SERVICE_NAME=<service-name> # e.g. sample-service or frontend-angular

skaffold run -p gke --default-repo=gcr.io/$PROJECT_ID -m $SERVICE_NAME

Update the ingress with new rules for this deployed service:

  • TBD

Deploy to GKE cluster with live-reload for debugging

To deploy to remote GKE cluster with local port-forwarding:

skaffold dev -p gke --default-repo=gcr.io/$PROJECT_ID -m sample-service

You will see the following output with the local port-forwarding endpoint:

Starting deploy...
- configmap/env-vars-<hash> unchanged
- service/sample-service configured
- deployment.apps/sample-service configured
Waiting for deployments to stabilize...
- deployment/sample-service is ready.
Deployments stabilized in 1.927 second
Port forwarding service/sample-service in namespace default, remote port 80 -> http://127.0.0.1:9001
Listing files to watch...
- sample-service
Press Ctrl+C to exit
[sample-service] 10.1.0.1 - - [15/Feb/2023:22:42:23 +0000] "GET / HTTP/1.1" 200 551 "-" "kube-probe/1.23"
Watching for changes...

Open the link http://127.0.0.1:PORT or http://localhost:PORT in a browser to see the service. (PORT will be different for each service)

  • If you are deploying a microservice, open http://localhost:9001/sample_service/docs for the API swagger documentation.
  • If you are deploying a frontend service, open http://localhost:8080 to see the web UI.
  • At this point, every changes in local files will trigger files hot-swap and update to the remote instance automatically. See Skaffold File Sync for more details.
  • When clicked Ctrl+C, it will remove the Cloud Run service.