node nvm

yum -y install git

cd /var

git clone https://github.com/creationix/nvm.git

cd var/nvm

./install.sh

source ./nvm.sh

vi ~/.bashrc

source /var/nvm/nvm.sh

nvm ls-remote

nvm install 6.2.0

nvm use 6.2.0

node -v 

npm -v