How to Deploy Rails with:
Ubuntu 16.04/Apache/Passenger/Rbenv/Ruby 2.4.1/Rails 5.1.1

Assuming Apache is already installed.

git clone gitlabrepo /var/www/html/rail/myapp

cd /var/www/html/rail/myapp

Assume that you're using Rbenv

rbenv version

rbenv local 2.4.1

rbenv global 2.4.1

2.4.1 (set by /home/deploy/.rbenv/version)

deploy should have sudo rights. Capistrano

bundle exec bundle install

yarn install

bundle exec rails c
bundle exec rails s RAILS_ENV=production

rails c
rails s
Its going to throw an error.

bundle exec rails db:migrate RAILS_ENV=production

gem 'dotenv-rails', .env

bundle exec rails assets:precompile

bundle exec rails db:seed RAILS_ENV=production

Apache

log/production.log

cd ~ (deploy)
gem install passenger

passenger-config validate-install

apt install libapache2-mod-passenger
tied to System Ruby
Conflict rbenv 2.4.1 that I want to use

passenger-install-apache2-module

/etc/apache2/mods-available/passenger-rbenv.conf
<IfModule mod_passenger.c>
     PassengerRoot /home/deploy/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/passenger-5.1.5
     PassengerDefaultRuby /home/deploy/.rbenv/versions/2.4.1/bin/ruby
</IfModule>


/etc/apache2/mods-available/passenger-rbenv.load
LoadModule passenger_module /home/deploy/.rbenv/versions/2.4.1/lib/ruby/gems/2.4.0/gems/passenger-5.1.5/buildout/apache2/mod_passenger.so

a2enmod passenger-rbenv

service apache2 reload

That's it!

Forgot this in the video

<VirtualHost *:80>
    ServerName mydomain.com
    ServerAdmin root@localhost
    DocumentRoot /var/www/html/rails/myapp/public
    # RailsEnv development
    RailsEnv production
    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
    <Directory "/var/www/html/rails/myapp/public">
        PassengerRuby /home/deploy/.rbenv/versions/2.4.1/bin/ruby
        Options FollowSymLinks
        Require all granted
    </Directory>
</VirtualHost>