The system must have access to certain repositories so that the installation program can access and install all required software dependencies.
Manually configuring the EPEL repository
If the system on which you are installing Unified Manager does not have access to the Extra Packages for Enterprise Linux (EPEL) repository, then you must manually download and configure the repository for a successful installation.
Manually configuring the MySQL repository
If the system on which you are installing Unified Manager does not have access to the MySQL Community Edition repository, then you must manually download and configure the repository for a successful installation.