redhat6.5 升级内核

1.导入key

rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org

2.安装elrepo的yum源

rpm -Uvh https://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm

3.安装内核   

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