Introduction
Certain packages required by cPanel are not available on some of the standard base repositories for RedHat Enterprise Linux. For this reason, we suggest enabling the "optional" repository for your installation.
Procedure
To enable the "optional" repository on RedHat Enterprise Linux 6, please use the command below:
subscription-manager repos --enable rhel-6-server-optional-rpms
To enable the "optional" repository on RedHat Enterprise Linux 7, please use the command below:
subscription-manager repos --enable rhel-7-server-optional-rpms