6.14. yum-plugin-priorities

This extension allows repositories to have different priorities. Packages in a low priority repository can not replace packages installed from repositories with higher priority, even if it has an updated version.

6.14.1. Configuration

/etc/yum/pluginconf.d/priorities.conf

[main]
enabled = 1
check_obsoletes=1

enabled = 0|1: Enable the extension at system wide.
check_obsoletes=1|0: If you do not want packages from low priority repos with the obsoletes specification to another one with a different name, set this option to 1.

Then each .repo file in /etc/yum.repos.d/ may include priority=N to indicate the priority, where N is an integer between 1 and 99. The value 1 has the highest priority and 99 the lowest. By default the repository inherits a low priority with N=99.