Passenger for Rails : CentOS

System Info

CentOS Linux release 7.0.1406 (Core) 

3.7GB Memory 

50GB diskspace

DUAL Core - Intel(R) Xeon(R) CPU E5-2680 v2 @ 2.80GHz

X86_64 - Architecture

Ref: 

https://www.digitalocean.com/community/tutorials/how-to-use-capistrano-to-automate-deployments-getting-started

https://www.digitalocean.com/community/tutorials/how-to-setup-a-rails-4-app-with-apache-and-passenger-on-centos-6

Root access:

yum -y update

yum groupinstall -y 'development tools'

curl -L get.rvm.io | bash -s stable  

  -- didnt work; and suggested next step in error

  >gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

curl -L get.rvm.io | bash -s stable

source /etc/profile.d/rvm.sh 

rvm reload

rvm get stable

rvm requirements

rvm reload

rvm install 2.1 #installed 2.1.5p273

rvm --default use 2.1.5

CONTINUE
https://www.rosehosting.com/blog/install-ruby-on-rails-with-apache-and-passenger-on-centos-6/

install rvm for newuser

adduser newuser

passwd newuser 

usermod -G wheel newuser #pick a fair name for new user

visudo #uncomment next line

  #%wheel ALL=(ALL) NOPASSWD:ALL

vim /etc/ssh/sshd_config #add next line to avoid ssh access using new user name

  DenyUsers newuser

service sshd restart

su - newuser

sudo yum -y update

sudo yum -y install curl curl-devel httpd-devel httpd mod_ssl

sudo curl -L get.rvm.io | bash -s stable  

  gpg2 --keyserver hkp://keys.gnupg.net --recv-keys 409B6B1796C275462A1703113804BB82D39DC0E3

#then sudo curl -L get.rvm.io | bash -s stable  

rvm get stable

rvm reload

rvm install 2.1.5

rvm use 2.1.5 --default

vim ~/.gemrc #put following lines to avoid lot of ri doc installations

---

:backtrace: false

:benchmark: false

:bulk_threshold: 1000

:sources:

- http://rubygems.org/

- http://gemcutter.org

:update_sources: true

:verbose: true

gem:

  --no-document

  --no-ri

  --no-rdoc

gem install rails

gem install passenger

passenger-install-apache2-module #follow the suggestions