Through setting to support CentOS6.

[bestlong]

Adjust the environment with nginx

use root permission or sudo

mkdir -pv /etc/nginx/sites-available
mkdir -pv /etc/nginx/sites-enabled
touch /etc/nginx/conf.d/include-sites-enabled.conf
echo 'include /etc/nginx/sites-enabled/*;' > /etc/nginx/conf.d/include-sites-enabled.conf

setup unicorn to support centos

add a line set to /config/deploy/production.rb

set :unicorn_target_server_os, 'centos6'