Install Yum EPEL and Remi repositories on Centos 7
Adding additional useful repo's on Centos 6 x86_64 and i386
Installing the optional EPEL yum repo
For the x86x64
wget http://dl.fedoraproject.org/pub/epel/beta/7/x86_64/epel-release-7-0.2.noarch.rpm
Now install them into YUM
rpm -Uvh epel-release-7*.rpm
Installing the optional and useful REMI yum repo
For the x86x64
wget http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
Now install them into YUM
rpm -Uvh remi-release-7*.rpm
Now update your system, usually a large number of packages are available.