How to Install Rails, Apache, and MySQL on Ubuntu with Passenger

This guide will walk you through the installation of Rails, Apache, and MySQL on Ubuntu, using Passenger as the application server.

1. Update Your Package Index

Start by updating your package index:

sudo apt update

2. Install Dependencies

Install necessary packages and dependencies:

sudo apt install -y curl gnupg2 ca-certificates lsb-release

3. Install MySQL

Install MySQL server with the following command:

sudo apt install -y mysql-server

Secure your MySQL installation by running:

sudo mysql_secure_installation

Follow the prompts to set up your root password and remove insecure default settings.

4. Install Ruby and Rails

Install RVM (Ruby Version Manager) to manage Ruby versions:

curl -sSL https://get.rvm.io | bash -s stable

Load RVM into your shell session:

source ~/.rvm/scripts/rvm

Install Ruby (replace 3.1.0 with the latest version if needed):

rvm install 3.1.0
rvm use 3.1.0 --default

Install Rails (replace 7.0.0 with the latest version if needed):

gem install rails -v 7.0.0

5. Install Apache and Passenger

Add the Passenger PPA and install Apache with Passenger:

sudo apt install -y dirmngr
sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 561F9B9CAC40B2F7
sudo apt-add-repository "deb https://oss-binaries.phusionpassenger.com/apt/passenger $(lsb_release -cs) main"
sudo apt update
sudo apt install -y apache2 libapache2-mod-passenger
    

Enable the Passenger module and restart Apache:

sudo a2enmod passenger
sudo systemctl restart apache2

6. Configure Apache for Rails

Create a new Apache configuration file for your Rails application:

sudo nano /etc/apache2/sites-available/yourapp.conf

Replace yourapp with your application’s name, and add the following configuration:

    ServerName yourdomain.com
    DocumentRoot /path/to/yourapp/public

    
        Allow from all
        Options -MultiViews
        AllowOverride all
        Require all granted
    

    PassengerRuby /usr/local/rvm/gems/ruby-3.1.0/wrappers/ruby

    

Enable the site and reload Apache:

sudo a2ensite yourapp
sudo systemctl reload apache2

7. Create and Migrate Your Rails Application

Create a new Rails application:

rails new yourapp -d mysql

Configure your database in config/database.yml with the MySQL credentials, then create and migrate your database:

cd yourapp
rails db:create
rails db:migrate

8. Deploy Your Rails Application

Ensure your Rails application is in the correct directory and is ready to be served by Apache. You should now be able to access your Rails application by navigating to http://yourdomain.com in your web browser.

9. Secure Your Application

Consider setting up SSL/TLS certificates for secure connections using tools like Certbot. Follow the documentation for Certbot to install and configure SSL certificates for your Apache server.

10. Keep Everything Updated

Regularly update your packages and application to ensure security and stability:

sudo apt update
sudo apt upgrade

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