avenetj/kiwi

SRE Task

Kiwi.ki

SRE Task - Application

• Part1 - Create a simple backend application which will store a counter of pings from users
• Part2 - Automate the deployment of the app created in part1.

Usage	Tech
Web app	Python 3.5 + Flask
Value Storage	Redis
LoadBalancing	HAproxy

Usage

Installation

The instructions assume that you have already installed Docker and Docker Compose.

  git clone https://github.com/avenetj/kiwi.git .

Part 1

You must be root to use docker-compose commands and the docker deamon must be running

  cd part1/app
  docker-compose up -d --build

The web application should be available on : http://127.0.0.1:5000/ping

  curl 127.0.0.1:5000/ping
  curl 127.0.0.1:5000/total

The following URL are implemented

• /ping : increments the number of ping
• /total : displays the total number of ping
• /reset : resets the value stored to 0

Shut down the application by running

  docker-compose down 

Part 2

  cd ../../part2/app
  docker-compose up --build -d --scale app=2

The web application should be available on : http://127.0.0.1/ping (no need for the port) The --scale app=2 runs 2 app containers. You can change the value to adjust your needs.

The same URL as before are implemented.

  curl 127.0.0.1/ping
  curl 127.0.0.1/ping
  curl 127.0.0.1/total

You should get two differents hostname (container name) when doing the curl commands.

Once you are done with the application, run this command to shut it down.

  docker-compose down 

Enjoy