Using Argo Rollouts with many microservices

Example with Argo Rollouts with backend and frontend

Read the full blog post at https://codefresh.io/blog/multi-service-progressive-delivery-with-argo-rollouts/

Run only the backend manually

Install GoLang locally

cd src/interest
APP_VERSION=1.2  go run .

You can now acces the backend at http://localhost:8080

Run only the frontend manually

Install GoLang locally

cd src/loan
APP_VERSION=1.4 PORT=9000 BACKEND_HOST=localhost go run .

You can now access the backend at http://localhost:9000

Run both of them at the same time

Install Docker compose (no need for local GoLang installation)

cd src
docker compose up

And now you can use the same URLs as above to access the services.

Run on Kubernetes as deployments

cd manifests/plain
kubectl create ns plain
kubectl apply -f . -n plain
kubectl port-forward svc/my-plain-backend-service 8000:8080 -n plain
kubectl port-forward svc/my-plain-frontend-service 9000:8080 -n plain

You can now access the backend at http://localhost:8000 and the backend at http://localhost:9000

Run on Kubernetes as Rollouts (modern app)

cd manifests/modern
kubectl create ns modern
kubectl apply -f . -n modern
kubectl port-forward svc/backend-active 8000:8080 -n modern
kubectl port-forward svc/backend-preview 8050:8080 -n modern

kubectl port-forward svc/frontend-active 9000:8080 -n modern
kubectl port-forward svc/frontend-preview 9050:8080 -n modern

You can now access the backend at http://localhost:8000 (old) and http://localhost:8050 (new) and the backend at http://localhost:9000 (old) and http://localhost:9050 (new)

To see what the rollouts are doing

kubectl-argo-rollouts get rollout my-frontend -n modern
kubectl-argo-rollouts get rollout my-backend -n modern

Run on Kubernetes as Rollouts (legacy app)

cd manifests/legacy
kubectl create ns legacy
kubectl apply -f . -n legacy
kubectl port-forward svc/backend-active 8000:8080 -n legacy
kubectl port-forward svc/backend-preview 8050:8080 -n legacy

kubectl port-forward svc/frontend-active 9000:8080 -n legacy
kubectl port-forward svc/frontend-preview 9050:8080 -n legacy

You can now access the backend at http://localhost:8000 (old) and http://localhost:8050 (new) and the backend at http://localhost:9000 (old) and http://localhost:9050 (new)

To see what the rollouts are doing

kubectl-argo-rollouts get rollout my-frontend -n legacy
kubectl-argo-rollouts get rollout my-backend -n legacy