升级CentOS内核 - 2.6升级到3.10

[root@localhost ~]# uname -a   ##旧版

Linux localhost.localdomain 2.6.32-279.el6.i686 #1 SMP Fri Jun 22 10:59:55 UTC 2012 i686 i686 i386 GNU/Linux

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

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

[root@localhost ~]# yum --enablerepo=elrepo-kernel install kernel-lt -y  ##此步会有点慢

[root@localhost ~]# vim /etc/grub.conf default=1 改为 default=0  ##设置默认以3.10核心启动，默认是按照旧的核心启动

[root@localhost ~]# reboot

[root@localhost ~]# uname -a  ##升级后的版本

Linux localhost.localdomain 3.10.104-1.el6.elrepo.i686 #1 SMP Fri Oct 21 09:11:59 EDT 2016 i686 i686 i386 GNU/Linux