Enable EPEL repository on CentOS 6

• Install epel-release repository:

  sudo rpm -Uvh http://dl.fedoraproject.org/pub/epel/6/$(uname -m)/epel-release-6-8.noarch.rpm

  After installation, you should be able to see it in the repository list:

  sudo yum repolist

• (According to this) Install Priorities:

  sudo yum install yum-plugin-priorities

• Set the priorities of epel to 50 (low priority) (see how to set repository priorities)

  sudo vi /etc/yum.repos.d/epel.repo

  priority=50