Example Blue Green Deployment with Argo rollouts and Codefresh

This is an example Java application that uses Spring Boot 2, Maven and Docker. It is compiled using Codefresh.

Instructions

To compile (also runs unit tests)

mvn package

Create a multi-stage docker image

To compile and package using Docker multi-stage builds

docker build . -t my-spring-boot-sample

To run the webapp manually

docker run -p 8080:8080 my-spring-boot-sample

....and navigate your browser to http://localhost:8080/

The Dockerfile also has a healthcheck

To run integration tests

docker run -p 8080:8080 my-spring-boot-sample
mvn verify

To use with Argo Rollouts

To install the controller

kubectl create namespace argo-rollouts
kubectl apply -n argo-rollouts -f https://raw.githubusercontent.com/argoproj/argo-rollouts/stable/manifests/install.yaml

To create the first deployment

kubectl create ns blue-green
kubectl apply -f ./blue-green-manual-approval -n blue-green

To monitor the status

kubectl argo rollouts get rollout spring-sample-app-deployment --watch -n blue-green

To create a new color

kubectl argo rollouts set image spring-sample-app-deployment spring-sample-app-container=kostiscodefresh/argo-rollouts-blue-green-sample-app:9c7732e -n blue-green

To promote the color

kubectl argo rollouts promote spring-sample-app-deployment -n blue-green

To reject or undo the deployment

kubectl argo rollouts abort spring-sample-app-deployment -n blue-green
kubectl argo rollouts undo spring-sample-app-deployment -n blue-green

To get the IP and port of the preview service

kubectl get svc  rollout-bluegreen-preview -n blue-green -o jsonpath='{.status.loadBalancer.ingress[0].ip}'
kubectl get svc  rollout-bluegreen-preview -n blue-green -o jsonpath='{.spec.ports[0].port}'

To use this project in Codefresh

There is also a codefresh.yaml for easy usage with the Codefresh CI/CD platform.

More details can be found in Codefresh documentation

Enjoy!