install nodejs centos - https://www.digitalocean.com/community/tutorials/how-to-install-node-js-on-a-centos-7-server

nodejs_centos

# INSTALL FROM BINARIES
wget https://nodejs.org/dist/v0.12.7/node-v0.12.7-linux-x64.tar.gz
sudo tar --strip-components 1 -xzvf node-v* -C /usr/local

# EPEL RELEASE
sudo yum install epel-release
sudo yum install nodejs

# COMPILE
wget https://nodejs.org/dist/v0.12.7/node-v0.12.7.tar.gz
tar xzvf node-v* && cd node-v*
sudo yum install gcc gcc-c++
./configure
make
sudo make install

# CHECK
node --version