yum-plugin-versionlock plugin takes a set of name/versions for packages and excludes all other versions of those packages (including optionally following obsoletes). This allows you to protect packages from being updated by newer versions, for example. This quick tutorial explains how to install and use yum versionlock to prevent package update using yum on a CentOS or RHEL based server.
Read more: CentOS / RHEL: Yum Lock Package Version At a Particular Version
