Standard Rails 3.* setup for Ubuntu 12.04 LTS 32

ubuntu_steps

# As root user

sudo su

# Update the OS
apt-get update -y
apt-get dist-upgrade -y
apt-get upgrade -y

# Setup Hostname & TimeZone
echo "{{HOSTNAME}}" > /etc/hostname
hostname -F /etc/hostname
dpkg-reconfigure tzdata

# Install Rails Requirements
apt-get install build-essential zlib1g-dev curl git-core libgeoip-dev -y

# Install NGINX & NODE
apt-get install python-software-properties -y

add-apt-repository ppa:nginx/stable
add-apt-repository ppa:chris-lea/node.js
apt-get update
apt-get install nginx nodejs -y
sudo service nginx restart

# Install Firewall
apt-get install ufw -y
ufw enable
ufw allow 22
ufw allow 80

# Add Deployment User
groupadd admin
adduser deployer --ingroup admin
su deployer

# ssh-copy-id keys to server

# Setup GIT
ssh [email protected]

# Install Ruby (RBENV) as per http://bit.ly/yr6Sw6
curl -L https://raw.github.com/fesplugas/rbenv-installer/master/bin/rbenv-installer | bash
vi ~/.bash_profile
  if [[ -d $HOME/.rbenv ]]; then
    export PATH="$HOME/.rbenv/bin:$PATH"
    eval "$(rbenv init -)"
  fi
  alias b='bundle exec'
source ~/.bash_profile
rbenv bootstrap-ubuntu-12-04
rbenv install 1.9.3-p194
rbenv global 1.9.3-p194

# Check installation went OK
ruby -v

# Install Bundler
vim ~/.gemrc
  gem: --no-ri --no-rdoc
gem install bundler
rbenv rehash

Postgress Installation
sudo add-apt-repository ppa:pitti/postgresql 
sudo apt-get update
sudo apt-get install postgresql-9.2 libpq-dev

sudo nano /etc/postgresql/9.2/main/pg_hba.conf

local   all             postgres                                ident

# TYPE  DATABASE        USER            ADDRESS                 METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     trust
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5

To see existing db and users
sudo -u postgres psql -l

Nokogiri gem dependency
sudo apt-get install libxslt-dev libxml2-dev

/usr/local/pgsql/bin/initdb --locale=en_US.UTF-8