MongoDB Ruby


Integrate MongoDB with Ruby

This quickstart guide will help you to integrate your Ruby application with MongoDB service on App42 PaaS.


Kontena – Kontena is a lightweight container that will run your apps and services in an isolated and secured manner. You can specify the power of the Kontena while setting up infra or creating services. One Kontena power specifies to 256 MB Memory and 128 MHz CPU.

Service – Services in the App42 PaaS are add-on components which are needed in an App. App42 PaaS supports multiple services like SQL databases, NoSQL databases and more.


To get going with App42 PaaS, below are few prerequisites that will allow you to use AppHQ – App42 PaaS Management Console as well as Command Line Client.

Configure MongoDB credentials into Ruby App

Once you have created the MongoDB service, You also need a configuration file for mongoid, which is a gem that helps us bind our models to MongoDB. This should look familiar, as it’s just a configuration file(app.rb) exactly like you usually work with in rails:

config.sessions = {
    :default => {
    :hosts => ["VM IP:VM PORT"], :database => "DATABASE NAME", :username => 'USER NAME', :password => 'PASSWORD'

You can also use our Sample Apps and extend it to suit your needs. Here is the link to Ruby MongoDB Sample App

Update Application

After doing all the modifications to your App, you need to update it on App42 PaaS to get the changes affected in your App running on App42 PaaS platform.

$ app42 update
Enter App Name: javademo
1: Binary
2: Source
Choose Upload Type [Binary]: 2

Updating Application... OK

Operation is in progress, Please wait...-
App deployed successfully.