ruby-app-deployment-example-project

The project ruby-app-deployment-example-project contains a web server ruby app written in ruby.

Table of Contents

• Installation
• Environment setup
• How is the Gemfile in the project created?
• Running
• Development
• Testing
• Docker
• Helm
• Kind
• License
• Authors
• Credits

Installation

We assume you are using macOS for developing the projects. Below instructions are designed to work in macOS Sonoma 14.0.

Environment setup

Install the ruby version managment tool rbenv execute the below command

brew install rbenv ruby-build

Add rbenv to zsh profile file .zprofile in your macOS shell path execute the below command

eval "$(rbenv init - zsh)"

Install a Ruby version 3.2.2 in rbenv execute the below command

rbenv install 3.2.2

Set the Ruby version for this directory execute the below command

rbenv local 3.2.2

Install gem bundler execute the below command

gem install bundler

If there is an update then update the bundler execute the below command

gem update --system 3.4.21

How is the Gemfile in the project created?

Create Gemfile using bundle execute the below command

bundle init

In the created Gemfile I added the following two gems

gem "ruby-lsp"
gem "rubocop"

Install the gems in Gemfile using bundle execute the below command

bundle install

Running

Set the path in terminal by change the path in terminal to folder ruby-app

cd ruby-app

To run the web server execute the below command

ruby http_server.rb

After executing the command,

1. Open the URL http://localhost:80 in browser and you will see message Well, hello there!
2. Open the URL http://localhost/healthcheck in browser and you will see message OK

Development

We use rubocop for linting and formatting ruby files

Check rubocop offenses in the project execute the below command

rubocop

To autocorrect fixable rubocop offenses execute the below command

rubocop -A

Testing

Unit tests are written in http_server_test.rb

To run unit tests execute the below command

ruby http_server_test.rb

Expected test output

Loaded suite http_server_test
Started
..
Finished in 0.000867 seconds.
------------------------------------------------------------------------------------------------------
2 tests, 2 assertions, 0 failures, 0 errors, 0 pendings, 0 omissions, 0 notifications
100% passed
------------------------------------------------------------------------------------------------------
2306.81 tests/s, 2306.81 assertions/s

Docker

Build the docker container

docker build -t sakarsh/ruby-app-deployment-example-project .

Run docker container

docker run -t -d -p 80:80 -i sakarsh/ruby-app-deployment-example-project:latest

Build and run ruby app with Docker Compose

docker compose up -d

Stop ruby app with Docker Compose

docker compose down

Helm

Install helm chart in minikube

helm install ruby-chart rubyap/ --values rubyap/values.yaml

Delete helm chart

helm delete ruby-chart

Kind

Create a cluster in kind with config.yaml file to access the Nodeport service locally

kind create cluster --config=config.yaml

Access the page locally on http://localhost/ and healthcheck on http://localhost/healthcheck

License

LICENSE - GNU GENERAL PUBLIC LICENSE Version 3

Authors

akarsh

Credits

This project uses Open Source components. You can find the source code of their open source projects along with license information below. We acknowledge and are grateful to these developers for their contributions to open source.