Centos 内核升级

 

[root@localhost ~]# uname -r

2.6.18-194.el5

1.下载linux-2.6.30内核包到/usr/src目录

cd /usr/src

wget ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-2.6.30.9.tar.gz

tar -xzvf linux-2.6.30.9.tar.gz -C /usr/src

cd linux-2.6.30.9

yum install gcc

yum install ncurses-devel

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:

 

networking support—>networking options—>network packet filtering framework(netfilter)

 

(1).core netfilter configuration

A 勾中”Netfilter connection tracking support”   -m state相关模块是依赖它的，不选则没有。

B 将netbios name service protocal support(new)    编译成模块,不然后面升级iptables后启动时会出错

C 勾中“Netfilter Xtables support (required for ip_tables)”

D 勾中 "TCPMSS" 选项

(2).IP: Netfilter Configuration

A 将 “IPv4 connection tracking support (require for NAT)” 编译成模块。

B 勾中IP tables support (required for filtering/masq/NAT) 。

C 将 “Full NAT” 下的 “MASQUERADE target support” 和 “REDIRECT target support” 编译成模块

(3).其它模块可以根据自己的需要进行选择,若不懂可以参考内核配置手册.

 

make clean   确保所有东西均保持最新状态.

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

 

2.在/etc/grub.conf添加如下2.6.30的信息,并把default=1改为default=0

[root@localhost ~]# cat /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 have a /boot partition.   This means that

#           all kernel and initrd paths are relative to /boot/, eg.

#           root (hd0,0)

#           kernel /vmlinuz-version ro root=/dev/VolGroup00/LogVol00

#           initrd /initrd-version.img

#boot=/dev/sda

default=0

timeout=5

splashimage=(hd0,0)/grub/splash.xpm.gz

hiddenmenu

title CentOS (2.6.18-194.el5)

         root (hd0,0)

         kernel /vmlinuz-2.6.18-194.el5 ro root=/dev/VolGroup00/LogVol00 rhgb quiet

         initrd /initrd-2.6.18-194.el5.img

 

title CentOS (2.6.30)

         root (hd0,0)

         kernel /vmlinuz-2.6.30 ro root=/dev/VolGroup00/LogVol00 rhgb quiet

         initrd /initrd-2.6.30.img