https://github.com/ohbus/ops-interview-task

Zerodha Ops Task
https://github.com/ohbus/ops-interview-task

docker docker-compose golang kubernetes redis vagrant

Last synced: 12 days ago
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Zerodha Ops Task

• Host: GitHub
• URL: https://github.com/ohbus/ops-interview-task
• Owner: ohbus
• Created: 2020-03-17T16:23:42.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2020-03-18T19:18:16.000Z (almost 5 years ago)
• Last Synced: 2023-03-04T15:44:03.262Z (almost 2 years ago)
• Topics: docker, docker-compose, golang, kubernetes, redis, vagrant
• Language: Go
• Size: 4.88 KB
• Stars: 2
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Zerodha Ops Task

## Description

This is a sample `Go` application which connects to Redis. The app increments a `counter` on an incoming request.

### Setting up the app

- Use `make build` to compile the binary.

- Set the environment variables:

    - `DEMO_APP_ADDR`: Address where the app should listen to

    - `DEMO_REDIS_ADDR`: Address where Redis is running

## Tasks

- Create a `Dockerfile` for the app.

- Create a `docker-compose.yml` for the app which includes

  - `redis` service, with the data directory of `redis` mounted at `/data` in your VM.

  - `app` service running with port `8000` exposed to the host.

- Write a bash script that creates and boots [Vagrant box](https://vagrant.io) with Ubuntu.

- Using Ansible provision the VM to:

  - Setup hostname of VM as `demo-ops`

  - Create a user `demo`

  - Configure `sysctl` for sane defaults. For eg: increasing open files limit. Configure a variety of `sysctl` settings to make the VM a production grade one.

  - Set the system's timezone to "Asia/Kolkata"

  - Install Docker and Docker-Compose

  - Configure Docker Daemon to have sane defaults. For eg: to keep logs size in check.

  - Deploy the `docker-compose.yml` in `/etc/demo-ops` and start the services

- Commit the scripts to Github and share the link.

### Bonus Section

If you have experience working with Kubernetes, you can attempt the bonus scenario:

- Create a namespace `demo-ops`

- Create a deployment and service manifest for the app.

- Configure liveliness check, resource quotas for the deployment.