CentOS 7 installation

1. Base operating system

Prepare environment and dependencies :

yum install gcc-c++ patch readline readline-devel zlib zlib-devel libyaml-devel libffi-devel openssl-devel make bzip2 autoconf automake libtool bison iconv-devel mysql-devel postgresql-devel

2. Deploy Ruby 2.2.1 with RVM

RVM helps to deploy ruby without odd tricks

curl -sSL https://rvm.io/mpapis.asc | gpg --import -
curl -L get.rvm.io | bash -s stable

Setup RVM environnement

source ~/.profile

Check and verify dependancies

rvm requirements run