danishbacker/atg-test-01

ATG Test

Sample Scalable Application on Kubernetes Cluster

A web application, written in NodeJS to upload, parse and process CSV files and store in S3 Bucket.

What's needed

• Kubctl
• Minikube

Development

• Cloning the repo

$ git clone https://github.com/danishbacker/atg-test-01

• Installing dependencies

$ npm install

Docker

• Building an image

$ docker login
$ docker build -t danishbacker/atg-test-01:prod .

• Running containers

$ docker run -it -p 49162:3000 -d danishbacker/atg-test-01:prod

• Push build to dockerhub

$ docker push danishbacker/atg-test-01:prod

• Stop all containers

$ docker stop $(docker ps -a -q)

Docker Nginx Config

Note: Not working for Kubernetes deployment

TODO: Update Kubernetes Deployment and Service

• Building an image

$ docker-compose build

• Running containers

$ docker-compose up

• Stopping containers

$ docker-compose down

Infrastructure

• Starting minikube with hyperkit (recommened for mac)

$ minikube start --vm-driver=hyperkit

• Apply

$ minikube start --vm-driver=hyperkit

• Create or update Deployment and Serivce on Kubernetes

$ kubectl apply -f k8s

• Update Deployment or Serivce individually

$ kubectl apply -f k8s/service.yml

• Check deployment and services

$ kubectl get services
$ kubectl get delpoyments
$ kubectl get pods

• Start minikube dashboard

$ minikube dashboard

• Open application in browser

$ minikube service atg-test-01

• Delete minikube

$ minikube stop
$ minikube delete

Test Deployment Scaling

• Test application scaling using Apache Benchmark (Note: installed by default in mac).

$ kubectl get hpa
$ ab -c 5 -n 100 -t 1000 http://<cluster-ip-addresss>:30003/

Auto scaling diagram

App Screens

Home page

File Upload

Parse and store in S3 bucket

Bucket Policy overview

Bucket Policy details