Ehbraheem / devops-challenge

Infrastructure Engineer (DevOps) Challenge

Infrastructure Engineer (DevOps) Challenge

The context

This challenge addresses a web application with a microservice architecture to calculate the acceleration of an object.

The application

• The application contains 3 microservices
• Each microservice takes care of only one arithmetic operation
• The microservices take inputs from the URL query form and return the result in JSON format
• The microservices are not stable and can stop serving requests

Services:

• acceleration-dv calculates 𝚫v=vf-vi

curl http://127.0.0.1:3001/dv?vf=200&vi=5
{"dv":195}

• acceleration-a calculates a=𝚫v/t

curl http://127.0.0.1:3002/a?dv=200&t=5
{"a":40}

• acceleration-calc coordinates request to acceleration-dv and acceleration-a services

curl http://127.0.0.1:3000/calc?vf=200&vi=5&t=123
{"a":1.5853658536585367}

Task

• Using Helm, write the necessary Kubernetes deployment and service files that can be used to create the full application, running 2 instances of each microservice.
• Only /calc of acceleration-calc microservices can be available outside of the kubernetes cluster.
• Run the application on a kubernetes cluster like Minikube or Docker for Mac.
• Make sure the application is stable.

Environment Setup

• Microservices are written on Typescript and Node.js version 10.14.2
• You would need to setup yarn
• Run yarn install to setup all required components
• Run yarn build to build production ready code
• Run yarn dev to run a service in dev environment
• Run yarn start to run a service in production

Instructions

• Fork this repo
• The challenge is on!
• Create a pull request
• Please complete your working solution within 7 days of receiving this challenge, and be sure to notify us when it is ready for review.