Upgrade CentOS Linux kernel to latest

upgrade_centos_kernel.sh

#!/bin/bash
set -e

main() {
    yum update -y
    rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
    rpm -Uvh https://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
    yum --enablerepo=elrepo-kernel install kernel-ml -y
    sudo awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg
    sudo grub2-set-default 0
    sudo grub2-mkconfig -o /boot/grub2/grub.cfg
    reboot
}

main