yum升级CentOS 6.5 kernel至3.10.52

we will use ELRepo to install kernel

1. rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
2. rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
[elrepo-kernel]

name=ELRepo.org Community Enterprise Linux Kernel Repository - el6
baseurl=http://elrepo.org/linux/kernel/el6/$basearch/ http://mirrors.coreix.net/elrepo/kernel/el6/$basearch/ http://jur-linux.org/download/elrepo/kernel/el6/$basearch/ http://repos.lax-noc.com/elrepo/kernel/el6/$basearch/ http://mirror.ventraip.net.au/elrepo/kernel/el6/$basearch/
mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo-kernel.el6
enabled=１
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0

3. yum --enablerepo=elrepo-kernel -y install kernel-lt

4. vi /etc/grub.conf

5. reboot