marthydavid / docker-java-sample-webapp

A simple java webapp + docker + docker-compose + kubernetes exploration project

docker-java-sample-webapp

Problems with OpenShift 3.10.

• Without proper ServiceAccount configuration the pod never started with mounted/env used secrets.
• Haproxy-Route url rewrite capability missing.
• Haproxy-Route missing 80 to 443 redirect.
• Missing logging, monitoring for pods.

Files:

• src/main/docker/Dockerfile used for building the container
• kubernetes.yaml file for deploying the app with predefined ingress host and secret

Usage

Edit kubernetes.yml with the correct url and secret name then: kubectl apply -f kubernetes.yaml Or install it with helm it's located under src/main/kubernetes/helm-chart

Test it:

Check if pod is running:

• kubectl get pods --field-selector=status.phase=Running -l app=java-sample
• kubectl run -i -t busybox --image=busybox --restart=Never
• curl -v http://java-sample:8080/?name=World
• curl -v http://java-sample:8080/docker-java-sample-webapp-1.0-SNAPSHOT?name=World

Check if rewrite is working through ingress

• export INGRESS_URL=$(kubectl get ingress pod-service -ojsonpath='{.spec.rules[*].host}')
• curl -vL http://$INGRESS_URL/?name=World or open http://$INGRESS_URL/?name=World
• curl -vL http://$INGRESS_URL/docker-java-sample-webapp-1.0-SNAPSHOT?name=World or open http://$INGRESS_URL/docker-java-sample-webapp-1.0-SNAPSHOT?name=World