On this page
Deploy Ruby and Rack-based applications
Currently, Clever Cloud supports Rack-based applications. Created in 2007, Rack has become the de-facto standard for ruby web applications and is used in many frameworks such as Ruby on Rails.
Create an application on Clever Cloud
via the web console
Refer to our getting started for more details on application creation via the console.
via the Clever Tools CLI
- Make sure you have clever-tools installed locally or follow our CLI getting started guide.
- In your code folder, do
clever create --type <type> <app-name> --region <zone> --org <org>where :
typeis the type of technology you rely on
app-namethe name you want for your application,
zonedeployment zone (
parfor Paris and
orgthe organization ID the application will be created under.
Refer to clever create for more details on application creation with Clever Tools.
Setting up environment variables on Clever Cloud
With the Clever Cloud console
- Go to the Clever Cloud console, and find the app you want to fine tune under it’s organization.
- Find the Environment variables menu and select it.
- In this menu, you will see a form with VARIABLE_NAME and variable value fields.
- Fill them with the desired values then select Add.
- Don’t forget to “Update Changes” at the end of the menu.
With the Clever Tools CLI
- Make sure you have clever-tools installed locally. Refer to our CLI getting started.
- In your code folder, do
clever env set <variable-name> <variable-value>
Refer to environment variables reference for more details on available environment variables on Clever Cloud.
You can of course create custom ones with the interface we just demonstrated, they will be available for your application.
Configure your Ruby and Rake application
Be sure that:
- Bundler is installed locally (
gem install bundler)
- you have a
- Git (for the deploy part)
- you have a
Gemfilecontaining your dependencies
Tutorial and sample app
You can find an hello world tutorial of a Ruby and Rack application here and find the source code of the demo here.
Monitor your application with New Relic
You can use New Relic to monitor your application on Clever Cloud.
Please refer to our New Relic documentation to configure it for your application.
Clever Cloud injects environment variables from your application settings as mentioned in setting up environment variables and is also injecting in your application production environment, those from your linked add-ons.
To access environment variables from your code, just get them from the environment with
Git Deployment on Clever Cloud
You need Git on your computer to deploy via this tool. Here is the official website of Git to get more information: git-scm.com
Setting up your remotes
The “Information” page of your app gives you your Git deployment URL, it looks like this:
- Copy it in your clipboard
Locally, under your code folder, type in
git initto set up a new git repository or skip this step if you already have one
Add the deploy URL with
git remote add <name> <your-git-deployment-url>
Add your files via
git add <files path>and commit them via
git commit -m <your commit message>
Now push your application on Clever Cloud with
git push <name> master
Refer to git deployments for more details.
Linking a database or any other add-on to your application
By linking an application to an add-on, the application has the add-on environment variables in its own environment by default.
On add-on creation
Many add-ons do exist on Clever Cloud, please refer to the full list and check add-ons dedicated pages for full instructions.
During add-on creation, you will see Applications screen, with a list of your applications. You can toggle the button to Link and click next. If you finish the process of add-on creation, the application will automatically be linked to it.
Add-on already exists
In the Clever Cloud console, under the Service Dependencies menu of your application, you can use the Link addons dropdown menu to select the name of the add-on you want to link and use the add button to finish the process.
You can also link another application from the same page in the Clever Cloud console, using the Link applications dropdown menu.
Need more configuration? To run a script at the end of your deployment? To add your private SSH key to access private dependencies?
Go check the Common configuration page.
You may want to have an advanced usage of your application, in which case we recommend you to read the Administrate documentation section.
If you can’t find something or have a specific need like using a non supported version of a particular software, please reach out to the support.