### Ubuntu 14.04 x64 + RVM + Node.js + Rails 4 + Nginx + Passenger + PostgreSQL

SSH into Root

    $ ssh root@123.123.123.123

Change Root Password

    $ passwd

Add Deploy User

    $ adduser deployer

Add Deployer to sudo group

    $ adduser deployer sudo

Configure SSH (Optional)

    $ nano /etc/ssh/sshd_config
    Port 22 # Change (1025..65536)
    Protocol 2 # Change
    PermitRootLogin no  # Change
    UseDNS no # Add
    AllowUsers deployer # Add

Reload SSH (Optional)

    $ reload ssh
        
SSH with Deploy User (Don't close root)

    $ ssh -p 1026 deployer@123.123.123.123

Install Curl and build stuff

    $ sudo apt-get update
    $ sudo apt-get install curl gnupg build-essential

Install RVM
    
    $ sudo apt-get update
    $ sudo apt-get install git-core curl zlib1g-dev build-essential libssl-dev libreadline-dev libyaml-dev libsqlite3-dev sqlite3 libxml2-dev libxslt1-dev libcurl4-openssl-dev python-software-properties libffi-dev libgmp-dev

    $ cd
    $ sudo apt-get install libgdbm-dev libncurses5-dev automake libtool bison libffi-dev
    $ curl -L https://get.rvm.io | bash -s stable
    
It may ask you to add signatures, add them and repeat last step

    $ source ~/.rvm/scripts/rvm
    $ rvm install 2.2.3
    $ rvm use 2.2.3 --default
    $ ruby -v
    
Install Bundler

    $ echo "gem: --no-ri --no-rdoc" > ~/.gemrc
    $ gem install bundler
    
Install NVM + Node.js, latest version ov NVM was 0.30.0, go check the latest one here: https://github.com/creationix/nvm

    $ curl https://raw.githubusercontent.com/creationix/nvm/v0.30.0/install.sh | sh
    $ source ~/.profile
    $ nvm ls-remote
      . . .
      v4.2.3
      v4.2.4
      v5.0.0
      v5.1.0
      . . .
    $ nvm install 4.2.4
    $ nvm use 4.2.4
    $ node -v
    
Install Rails

    $ gem install rails -v 4.2.4
    $ rbenv rehash
    $ rails -v
    # Rails 4.2.4

Install PostgreSQL

    $ sudo sh -c "echo 'deb http://apt.postgresql.org/pub/repos/apt/ precise-pgdg main' > /etc/apt/sources.list.d/pgdg.list"
    $ wget --quiet -O - http://apt.postgresql.org/pub/repos/apt/ACCC4CF8.asc | sudo apt-key add -
    $ sudo apt-get update
    $ sudo apt-get install postgresql-common
    $ sudo apt-get install postgresql-9.3 libpq-dev

Create Postgres User

    $ sudo -u postgres psql
    create user deployer with password 'password';
    alter role deployer superuser createrole createdb replication;
    create database MYAPP_production owner deployer;

Install GIT

    $ sudo apt-get install git-core

Install Passenger

    $ sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 561F9B9CAC40B2F7
    $ sudo apt-get install -y apt-transport-https ca-certificates
    
    $ sudo sh -c 'echo deb https://oss-binaries.phusionpassenger.com/apt/passenger trusty main > /etc/apt/sources.list.d/passenger.list'
    $ sudo apt-get update

    $ sudo apt-get install -y nginx-extras passenger
    
Getting passenger_ruby (nginx)

    $ passenger-config about ruby-command
      passenger-config was invoked through the following Ruby interpreter:
      Command: /home/deployer/.rvm/gems/ruby-2.2.3/wrappers/ruby
      Version: ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]
      To use in Apache: PassengerRuby /home/deployer/.rvm/gems/ruby-2.2.3/wrappers/ruby
      To use in Nginx : passenger_ruby /home/deployer/.rvm/gems/ruby-2.2.3/wrappers/ruby
      To use with Standalone: /home/deployer/.rvm/gems/ruby-2.2.3/wrappers/ruby /usr/bin/passenger start

Getting passenger_root
      
    $ passenger-config --root
      /usr/lib/ruby/vendor_ruby/phusion_passenger/locations.ini
      
Edit Nginx config and setup Passenger      
      
    $ sudo nano /etc/nginx/nginx.conf  
    
Uncomment these lines and copy passenger_ruby & passenger_root got above
    
    # passenger_root /some-filename/locations.ini;
    # passenger_ruby /usr/bin/passenger_free_ruby;
    
Add Nginx site

    $ sudo nano /etc/nginx/sites-enabled/myapp.conf
      
      server {
        listen 80;
        server_name yourserver.com;

        # Tell Nginx and Passenger where your app's 'public' directory is
        root /var/www/myapp/code/public;

        # Turn on Passenger
        passenger_enabled on;
      }