gem install passenger --version 4.0.16

gem 'passenger', '~> 4.0.16'

yum install curl-devel

passenger-install-nginx-module

passenger like this:

dd if=/dev/zero of=/swap bs=1M count=1024
mkswap /swap
swapon /swap

/opt/nginx/conf/nginx.conf

http {
…
passenger_root /usr/local/rvm/gems/ree-1.8.7-2012.02/gems/passenger-4.0.16;
passenger_ruby /usr/local/rvm/wrappers/ree-1.8.7-2012.02/ruby;
…
}

server {
listen 80;
server_name www.yourhost.com;
root /somewhere/public; # <— be sure to point to ‘public’!
passenger_enabled on;
}

folder: