Kubernetes Demo

This repo is a playground for simple Kubernetes project. It uses Helm Charts to deploy and manage Kubernetes configuration files.

This project is far from being ready for production!

Microservices

The microservices are written in different languages. They do depend on each other to demonstrate more complex infrastructure.

• calc (NodeJS) - is a REST API that supports: addition, subtraction, multiplication and division of two integers
• add (Golang) - is a microservice that provides API for addition of two integers
• sub (Golang) - is a microservice that provides API for subtraction of two integers
• mul (Python 3.x) - is a microservice that provides API for multiplication of two integers
• div (Python 3.x) - is a microservice that provides API for division of two integers

Infrastructure

There are 5 microservices in total: 1 public and 4 internal. The calc microservice acts as API Gateway and uses other services to provide a result to given mathematical equation.

Setup

This project requires kubectl, minikube and helm.

1. minikube create/minikube start
2. eval $(minikube docker-env)
3. docker-compose build
4. minikube addons enable ingress
5. chmod a+x deploy.sh
6. ./deploy.sh

Test

API=$(minikube ip)
curl "https://$API/" --insecure
curl "https://$API/add/2/3" --insecure
curl "https://$API/add/3/2" --insecure
curl "https://$API/sub/12/4" --insecure
curl "https://$API/mul/4/2" --insecure
curl "https://$API/mul/19/18" --insecure
curl "https://$API/div/10/5" --insecure
curl "https://$API/div/10/4" --insecure