CentOS Linux 蓝冠官网升级内核步骤、方法

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当前系统为CentOS Linux release 6.0 (Final),蓝冠官网 内核版本为2.6.32-71.el6.i686.由于最近内核出现最新的漏洞(linux kernel 又爆内存提权漏洞,2.6.39 内核无一幸免,所以将内核升级至3.2.2最新版本。

  1. 查看当前系统内核

uname -r

2 2.6.32-71.el6.i686

  1. 下载linux-3.2.2内核包

cd ~

wget -c http://www.kernel.org/pub/linux/kernel/v3.0/linux-3.2.2.tar.bz2

tar jxvf linux-3.2.2.tar.bz2

cd linux-3.2.2

  1. 配置内核并安装

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

找到以下选中选项并选中networking support → networking options → network packet filtering framework(netfilter)

(1).Core netfilter configuration

勾中”Netfilter connection tracking support” -m state相关模块是依赖它的,蓝冠注册平台 不选则没有。
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
勾中“Netfilter Xtables support (required for ip_tables)”
(2).IP: Netfilter Configuration

将 “IPv4 connection tracking support (require for NAT)” 编译成模块。
勾中IP tables support (required for filtering/masq/NAT) 。
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

  1. 编辑 /etc/grub.conf 文件,蓝冠代理 将 default=1 改为 default=0

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/mapper/VolGroup-lv_root

initrd /initrd-[generic-]version.img

boot=/dev/sda

default=1
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title CentOS Linux (3.2.2)
root (hd0,0)
kernel /vmlinuz-3.2.2 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet
initrd /initramfs-3.2.2.img
title centos (2.6.32-71.el6.i686)
root (hd0,0)
kernel /vmlinuz-2.6.32-71.el6.i686 ro root=/dev/mapper/VolGroup-lv_root rd_LVM_LV=VolGroup/lv_root rd_LVM_LV=VolGroup/lv_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet
initrd /initramfs-2.6.32-71.el6.i686.img

  1. 重启系统,并查看内核

reboot

uname -r

3.2.2

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