Sample web application based on k8s. Focus on connecting components, setting k8s resources, and aiming to microservices. The k8s-3tier-webapp service is for PoC, not production ready.

• Choice better architecture what you expect based on k8s
• Help understanding k8s resources based on yaml
• Test automation on Github Actions for free
• Expand test automation - unit, end-to-end, performance, recovery, security
• Keep observability for monitoring services
• Improve application quality using public CI services that following Github

• All docker components run on k8s
• All application written by Java mostly Quarkus
• k8s resources written by yaml, try not to use helm, operator
• Use only public software, not commercial
• Use Github Actions for build, test, release

Installed CLI commands.

• 💻 docker
• 💻 kubectl
• 💻 minikube

minikube config set memory 121288
minikube config set cpus 6
minikube config set disk-size 80g
minikube start
minikube addons enable ingress
kubectl delete -A ValidatingWebhookConfiguration ingress-nginx-admission

eval $(minikube docker-env)

minikube config set memory 121288
minikube config set cpus 6
minikube config set disk-size 80g
minikube start
minikube addons enable ingress
kubectl delete -A ValidatingWebhookConfiguration ingress-nginx-admission

minikube docker-env --shell powershell | Invoke-Expression

apply.sh supports kubectl apply to k8s clusters.

./kubernetes/bin/apply.sh

Add IP, domain in /etc/hosts

echo `minikube ip` k8s.3tier.webapp openliberty.minikube spring.minikube api.server.minikube \
rabbitmq.management.minikube jenkins.minikube alertmanager.minikube prometheus.minikube \
grafana.minikube jupyter.minikube hazelcast.manager.minikube activemq.management.minikube \
jaeger.minikube argo.minikube >> /etc/hosts

Java based web application for application

Yaml based kubernetes manifests for kubernetes

Set up monitoring for Tier 3

k8s-3tier-webapp is licensed under the MIT License. See LICENSE for the full license text.

1. Fork this repo
2. Create a feature branch named like feature/enhancement from master branch
3. Commit your changes
4. Rebase your local changes against the master branch
5. Create new Pull Request