[root@iZ2893wjzgyZ ~]# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

[root@iZ2893wjzgyZ ~]# rpm -ivh http://www.elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm

[root@iZ2893wjzgyZ ~]# yum --enablerepo=elrepo-kernel install kernel-lt -y

[root@iZ2893wjzgyZ ~]# vim /etc/grub.conf

default= 改为default=

[root@iZ2893wjzgyZ ~]# reboot

[root@iZ2893wjzgyZ ~]# uname -a

Linux iZ2893wjzgyZ 3.10.-.el6.elrepo.x86_64 # SMP Sat Jan  :: EST  x86_64 x86_64 x86_64 GNU/Linux