CentOS 7升級核心簡明說明

1.更新源

yum update
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org 
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-4.el7.elrepo.noarch.rpm

2.確認目前的版本資訊

uname -r

3.刪除相關元件

yum remove kernel-headers kernel-tools kernel-tools-libs

4.安裝相關元件

yum -y --disablerepo="*" --enablerepo="elrepo-kernel" install kernel-ml kernel-ml-devel kernel-ml-headers kernel-ml-tools kernel-ml-tools-libs kernel-ml-tools-libs-devel 
sed -i '/GRUB_DEFAULT/s/=.*/=0/' /etc/default/grub
grub2-mkconfig -o /boot/grub2/grub.cfg
reboot

確認是否升級成功

uname -r