CentOS 6.3 升级内核 ..

一. 查看当前内核

uname -r

二. 下载内核文件

wget http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.7.tar.gz
tar zxvf linux-3.7.tar.gz

cd linux-3.7

三. 清楚环境变量，选择编译内核参数

make mrproper #清除环境变量，即清除配置文件

make menuconfig #在菜单模式下选择需要编译的内核模块

四. 安装 编译内核

make clean #清除安装

make bzImage #生成内核文件

make modules #编译模块

make modules_install #安装模块

make install #安装

五. 修改grub.conf 文件 将 default=1 改成 default=0

===================================================================================

# 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 (3.7.4)

root (hd0,0)

kernel /boot/vmlinuz-3.7.4 ro root=UUID=2fe4bf1c-7d56-412a-b91c-4da55f91177c 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-3.7.4.img

title CentOS (2.6.32-279.19.1.el6.x86_64)

root (hd0,0)

kernel /boot/vmlinuz-2.6.32-279.19.1.el6.x86_64 ro root=UUID=2fe4bf1c-7d56-412a-b91c-4da55f91177c 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-2.6.32-279.19.1.el6.x86_64.img

title CentOS (2.6.32-279.el6.x86_64)

root (hd0,0)

kernel /boot/vmlinuz-2.6.32-279.el6.x86_64 ro root=UUID=2fe4bf1c-7d56-412a-b91c-4da55f91177c 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-2.6.32-279.el6.x86_64.img

=====================================================================================

六. 重启服务器

reboot

uname -r