Repository $REPO_NAME Is Listed More Than Once In The Configuration

Symptom: 

When installing a package using yum or the EasyApache interface you might see the following error message:

yum install ea-nginx

Loaded plugins: fastestmirror, rhnplugin, universal-hooks
This system is receiving updates from CLN.


Repository cloudlinux-x86_64-server-7 is listed more than once in the configuration

Note: Here the repository name is cloudlinux-x86_64-server-7, but it could be any other repository. 

Description: 

The error is related to the rhnplugin plugin and as a tentative solution, you can work around this issue by temporarily disabling that plugin. 

Resolution: 

There are different ways to disable a plugin when running yum. First, it's possible to disable a plugin for only the duration of a single yum command:

yum --disableplugin=rhnplugin install ea-nginx

Secondly, you can disable the rhnplugin on a more permanent basis by modifying its configuration file as follows: 

- Make sure that the "enabled" line is set to zero: 

vim /etc/yum/pluginconf.d/rhnplugin.conf

[main]
enabled = 0
gpgcheck = 1

- Clean all Yum's cached data:

yum clean all

- Then try to reinstall the package: 

yum install ea-nginx