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使用yum快速升级CentOS 6.5内核到 3.10.28 在yum的ELRepo源中，有mainline（3.13.1）、long-term（3.10.28）这2个内核版本，考虑到long-term更稳定，会长期更新，所以选择这个版本。 1、导入public key rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org 2、安装ELRepo到CentOS-6.5中 rpm -ivh http://www.elrepo.org/elrepo-release-6-5.el6.elrepo.noarch.rpm 3、安装kernel-lt（lt=long-term） yum --enablerepo=elrepo-kernel install kernel-lt -y 或者安装kernel-ml（ml=mainline） yum --enablerepo=elrepo-kernel install kernel-ml -y 4、编辑grub.conf文件，修改Grub引导顺序 vim /etc/grub.conf # grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You do not have a /boot partition. This means that # all kernel and initrd paths are relative to /, eg. # root (hd0,0) # kernel /boot/vmlinuz-version ro root=/dev/sda1 # initrd /boot/initrd-[generic-]version.img #boot=/dev/sda default=0 timeout=5 splashimage=(hd0,0)/boot/grub/splash.xpm.gz hiddenmenu title CentOS (3.10.28-1.el6.elrepo.x86_64) root (hd0,0) kernel /boot/vmlinuz-3.10.28-1.el6.elrepo.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=en_US.UTF-8 rd_NO_LVM rd_NO_DM rhgb quiet initrd /boot/initramfs-3.10.28-1.el6.elrepo.x86_64.img title CentOS (2.6.32-431.3.1.el6.x86_64) root (hd0,0) kernel /boot/vmlinuz-2.6.32-431.3.1.el6.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=en_US.UTF-8 r d_NO_LVM rd_NO_DM rhgb quiet initrd /boot/initramfs-2.6.32-431.3.1.el6.x86_64.img title CentOS (2.6.32-431.el6.x86_64) root (hd0,0) kernel /boot/vmlinuz-2.6.32-431.el6.x86_64 ro root=UUID=0a05411f-16f2-4d69-beb0-2db4cefd3613 rd_NO_LUKS KEYBOARDTYPE=pc KEYTABLE=us rd_NO_MD crashkernel=auto LANG=zh_CN.UTF-8 rd_NO _LVM rd_NO_DM rhgb quiet initrd /boot/initramfs-2.6.32-431.el6.x86_64.img 确认刚安装好的内核在哪个位置，然后设置default值（从0开始），一般新安装的内核在第一个位置，所以设置default=0。 5、重启，查看CentOS 6.5 内核版本号 [root@dev ~]# uname -r
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