Part 1: Installation

This deployment is done in Ubuntu 22.04 as Passenger has not officially supported 24.04 at this point in time.

1. Launch a new instance, and perform an update if there is one.

   sudo apt update
   sudo apt upgrade

2. Set the timezone if needed.

   sudo timedatectl set-timezone Asia/Kuala_Lumpur

3. Generate identity (Whitelist your repository with the public key if needed)

   ssh-keygen

4. Install the necessary tools

   sudo apt-get install git-core zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libxml2-dev libxslt1-dev libcurl4-openssl-dev software-properties-common libffi-dev mysql-client libmysqlclient-dev

5. Install nginx

   sudo apt install nginx -y

6. Install rbenv and ruby-build

   https://github.com/rbenv/rbenv
   git clone https://github.com/rbenv/rbenv.git ~/.rbenv
   ~/.rbenv/bin/rbenv init
   git clone https://github.com/rbenv/ruby-build.git "$(rbenv root)"/plugins/ruby-build

7. Install the intended Ruby version and make it global

   rbenv install 3.x.x
   rbenv global 3.x.x

8. Follow the official guide to install Passenger.
9. Follow the official guide to install certbot for Let's Encrypt.

Part 2: Application

Clone your code, or setup Capistrano deployment

Part 3: Setup Nginx & Passenger

1. Remove the default nginx site config

   sudo rm /etc/nginx/sites-available/default

2. Create your site config

   # /etc/nginx/sites-available/mysite
   server {
           server_name my.domain;
           passenger_enabled on;
           rails_env production;
           root /path/to/public;
           listen 80 default_server;
           listen [::]:80 default_server;
   }

3. Create a symlink of this config in the sites-enabled directory

   sudo ln -s /etc/nginx/sites-available/mysite mysite

4. Update the Passenger config to point to the correct Ruby.

   ### Begin automatically installed Phusion Passenger config snippet ###
   passenger_root /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini;
   passenger_ruby /home/ubuntu/.rbenv/shims/ruby;
   
   passenger_instance_registry_dir /var/run/passenger-instreg;
   
   ### End automatically installed Phusion Passenger config snippet ###
   
   passenger_preload_bundler on;

5. Start the Nginx server

   sudo service nginx start

6. Check passenger status

   passenger-status

7. Install SSL Cert using Certbot

   sudo certbot --nginx

Part 4: Optional Steps

1. Install node

   sudo apt install nodejs