# cat /etc/redhat-release
# uname -r

ELRepo

# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
# rpm -Uvh https://www.elrepo.org/elrepo-release-8.0-2.el8.elrepo.noarch.rpm
# yum --disablerepo="*" --enablerepo="elrepo-kernel" list available

# yum -y --enablerepo=elrepo-kernel install kernel-ml
# grub2-set-default 0

# yum remove kernel-core-4.18.0 kernel-devel-4.18.0 kernel-tools-libs-4.18.0 kernel-headers-4.18.0
# rpm -qa | grep kernel

# yum install yum-utils