Login to your server with root and copy and paste the following commands
cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo /root
wget http://lg.rebelhosting.net/CentOS-Vault.repo
Login to your server with root and copy and paste the following commands
cd /etc/yum.repos.d/
mv CentOS-Base.repo CentOS-Debuginfo.repo CentOS-Media.repo /root
wget http://lg.rebelhosting.net/CentOS-Vault.repo