Deploying Rails 7 application with Nginx and Passenger

Part 1: Installation

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

Launch a new instance, and perform an update if there is one.
```
sudo apt update
sudo apt upgrade
```

Set the timezone if needed.

sudo timedatectl set-timezone Asia/Kuala_Lumpur

Generate identity (Whitelist your repository with the public key if needed)
```
ssh-keygen
```

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

Install nginx
```
sudo apt install nginx -y
```

Install rbenv and ruby-build

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

Install the intended Ruby version and make it global
```
rbenv install 3.x.x
rbenv global 3.x.x
```
Follow the official guide to install Passenger.
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

Remove the default nginx site config

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

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;
}

Create a symlink of this config in the sites-enabled directory
```
sudo ln -s /etc/nginx/sites-available/mysite mysite
```

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;

Start the Nginx server
```
sudo service nginx start
```
Check passenger status
```
passenger-status
```
Install SSL Cert using Certbot
```
sudo certbot --nginx
```

Part 4: Optional Steps

Install node
```
sudo apt install nodejs
```
Install supervisor
```
sudo apt install supervisor
```
Install logrotate
```
sudo apt install logrotate
```
Install imagemagick
```
sudo apt install imagemagick
```

Part 1: Installation

Part 2: Application

Part 3: Setup Nginx & Passenger

Part 4: Optional Steps

AI Summary