Guide to Install ruby on rails, nginx and postgres

ruby_nginx_postgres.sh

#update ubuntu packager
sudo apt-get update

#### Dependencies

#Install following prerequisite libraries for our environment
sudo apt-get install libpcre3-dev build-essential libssl-dev libxml2 libxml2-dev libxslt-dev ncurses-dev

#Install image processing libraries, if necessary
sudo apt-get install imagemagick libmagickcore-dev libmagickwand-dev

#Install Git
sudo apt-get install git git-core

#### Ruby Version Manager

# Install RVM
curl -L get.rvm.io | bash -s stable

# After it is done installing, load RVM.
# in case of using NON-ROOT user to install
echo '[[ -s "/home/USER/.rvm/scripts/rvm" ]] && source "/home/USER/.rvm/scripts/rvm"' >> ~/.bashrc
source ~/.rvm/scripts/rvm

# in case of using ROOT user to install
echo '[[ -s "/etc/profile.d/rvm.sh" ]] && source "/etc/profile.d/rvm.sh"' >> ~/.bashrc
source /etc/profile.d/rvm.sh 

# Enter the following line to terminal
type rvm | head -1 # must return: rvm is a function

# Install RVM dependencies
rvm requirements # to show dependencies

# then install listed dependencies, it may vary on each machine
sudo apt-get install gawk libreadline6-dev libyaml-dev libsqlite3-dev sqlite3 autoconf libgdbm-dev automake bison libffi-dev

# Install Ruby
rvm install 1.9.3

# We need to tell the system to use 1.9.3 by default.
rvm use 1.9.3 --default

# Install rubygems
rvm rubygems current

# Install rails
gem install rails

# Install Passenger
gem install passenger

#### Nginx

# Install missing dependencies
sudo apt-get install libcurl4-openssl-dev

# Nginx module installation is completely interactive and it will guide you when some problem happens
rvmsudo passenger-install-nginx-module

export rvmsudo_secure_path=1


# Creating swap memory
sudo dd if=/dev/zero of=/swap bs=1M count=1024
sudo mkswap /swap
sudo swapon /swap

# Configure nginx conf file:
# The Nginx configuration file (/opt/nginx/conf/nginx.conf)
http {
      ...
      passenger_root /usr/local/rvm/gems/ruby-1.9.3-p448/gems/passenger-4.0.10;
      passenger_ruby /usr/local/rvm/wrappers/ruby-1.9.3-p448/ruby;
      ...
  }

# Creats a server block into nginx.conf file:
 server {
      listen 80;
      server_name www.yourhost.com;
      root /somewhere/public;   # <--- be sure to point to 'public'!
      passenger_enabled on;
   }


# Download nginx startup script
wget -O init-deb.sh http://library.linode.com/assets/660-init-deb.sh
# Move to the init.d directory and make executable
sudo mv init-deb.sh /etc/init.d/nginx 
sudo chmod +x /etc/init.d/nginx
# Add nginx to the system startup
sudo /usr/sbin/update-rc.d -f nginx defaults

# In case of Perl warning about locale settings:
sudo locale-gen pt_BR.UTF-8
sudo dpkg-reconfigure locales

#### Postgres

# Add repository
sudo add-apt-repository ppa:pitti/postgresql
sudo apt-get update
sudo apt-get install postgresql
sudo apt-get install libpq-dev

# if add-apt-repository not installed
sudo apt-get install python-software-properties

# Start postgres service in case of not already started:
$ sudo /etc/init.d/postgresql start

# Change postgres password:
$ sudo -u postgres psql

# Set password
ALTER USER postgres with password 'secure-password';

# login production
ubuntu@ip-10-77-70-51:/var/www/your_app$ psql -h localhost -d database_name -U postgres -W
Password for user postgres: