#wget http://ftp.scientificlinux.org/linux/scientific/7.0/x86_64/updates/security/kernel-3.10.0-514.21.1.el7.x86_64.rpm
#yum install kernel-3.10.0-514.21.1.el7.x86_64.rpm
#yum install kernel-ml-aufs kernel-ml-aufs-devel
#vim /etc/grub.conf
將
default=0
改爲
default=1
#reboot
查看是否升級成功
#uanme -a