参考:ELRepo.org
首先安装epel源
rpm -ivh http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
导入public key
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
安装ELRepo到CentOS 6中
rpm -Uvh http://www.elrepo.org/elrepo-release-6-6.el6.elrepo.noarch.rpm
安装内核
yum --enablerepo=elrepo-kernel install kernel-lt –y
修改引导文件,将默认引导改为0
vim /etc/grub.conf