Yum is the default way of getting access to Red Hat’s enterprise directory to download and upgrade software from Red Hat’s repos.

Yum 4 is still technically in beta, but it has been available since late 2017, and so far no major issues have been reported with it.

While the essence of the Yum experience remains the same, Yum 4 comes with a series of improvements in terms of dependency resolutions and API access.

To start using it, just run the following commands (this assumes that you’re already running CentOS 7):

# yum install centos-release-yum4
# yum --enablerepo=centos-yum4-testing install yum4
# yum4 --enablerepo=centos-yum4-testing install dnf-plugins-core