How To Lock Installed RPM Package Update

“Lets assume you have a RPM Package installed called
firefox-3.6.17-1.el5.centos and you don’t want to update it even if
a newer version is available. This can by done by using YUM plugin
called yum-versionlock. This plugin allows you to lock package
update. Just you need to add the list of packages that you want to
lock their updates with their version and architecture in the lock
file /etc/yum/pluginconf.d/versionlock.list.

So, whenever you update your system these packages where
excluded by the YUM, because yum reads the file before updating the
packages.

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