yum install gem facter hiera -y

gem install json_pure

Goto https://downloads.puppetlabs.com/puppet/

ex: 4.7.0
wget https://downloads.puppetlabs.com/puppet/puppet-4.7.0.tar.gz
tar -xzvf puppet-4.7.0.tar.gz
cd puppet-4.7.0
ruby install.rb
puppet –version