Spring-Boot-In-Kubernetes

This project construct several spring boot servers in kubernetes.

The nginx ingress is used as the load balancer.

The rule for load balancing is consistent hashing base on $request_uri.

The configuration can be got in https://kubernetes.github.io/ingress-nginx/user-guide/nginx-configuration/annotations/

Guides

1. Make sure the docker, kubernetes, kubectl, helm chart are installed
2. Add the NGINX Ingress Controller as below (in docker for mac, other envs pls check https://kubernetes.github.io/ingress-nginx/deploy/)

kubectl apply -f https://github.com/kubernetes/ingress-nginx/master/deploy/mandatory.yaml
kubectl apply -f https://github.com/kubernetes/ingress-nginx/master/deploy/provider/cloud-generic.yaml

3. Add the helm tiller to the kubernetes

kubectl create serviceaccount tiller --namespace kube-system
kubectl create clusterrolebinding tiller --clusterrole cluster-admin --serviceaccount=kube-system:tiller
helm init --service-account=tiller

4. Use helm to deploy this project

helm upgrade --install --tiller-namespace="kube-system" helloworld chart/helloworld/

5. Use the request below to check whether the servers are avaliable

curl -G "http://localhost?a=2"

6. The result below means the deployment is successful.

Hello Docker World helloworld-75b55c4dd-4rdjr