lvs fullnat部署手册（一）fullnat内核编译篇
fullnat开源已经有一阵子了，内核版本为2.6.32-220.23.1.e16，项目地址http://kb.linuxvirtualserver.org/wiki/IPVS_FULLNAT_and_SYNPROXY。本�疟嘁氩馐曰肪橙缦拢�
centos6.3 64位
编译过程参照官方做法，只是融入后续的打rpm包的部分。过程如下：
一、下载相关代码：
下载 kernel-2.6.32-220.23.1.el6.src.rpmlinux-2.6.32-220.23.1.el6.x86_64.lvs.src.tar.gz
lvs-fullnat-synproxy.tar.gz
二、编译内核
1、安装kernel-2.6.32-220.23.1.el6.src.rpm
rpm -ivh kernel-2.6.32-220.23.1.el6.src.rpm
2、生成内核源码
默认的，你会在root家目录下看到rpmbuild目
cd ~/rpmbuild/SPECS rpmbuild -bp kernel.spec
3、对生成的内核源码打patch默认的
#在/usr/local/src下解压linux-2.6.32-220.23.1.el6.x86_64.lvs.src.tar.gz tar zxf linux-2.6.32-220.23.1.el6.x86_64.lvs.src.tar.gz #打patch cd ~/rpmbuild/BUILD/kernel-2.6.32-220.23.1.el6/linux-2.6.32-220.23.1.el6.x86_64/ cp /usr/local/src/linux-2.6.32-220.23.1.el6.x86_64.lvs/lvs-2.6.32-220.23.1.el6.patch . #淘宝将IP_VS改成了22，测试时遇到些麻烦，因此改为20了。 #vim .config CONFIG_IP_VS_TAB_BITS=20 #你可以修改Makefile把内核的名称做下标记（line：4） EXTRAVERSION = .FNAT.shanks.e27.x86_64
4、make
make -j16 make modules_install make install;
5、配置grub.conf
#vim /boot/grub/grub.conf default=0
三、reboot
reboot之后uname -r看下是不是你想要的内核。
四、打内核rpm包
1、安装kernel-2.6.32-220.23.1.el6.src.rpm
rpm -ivh /usr/local/src/kernel-2.6.32-220.23.1.el6.src.rpm
2、生成内核源码目录
rpmbuild -bp ~/rpmbuild/SPECS/kernel.spec
3、复制出一份内核源码目录
cd ~/rpmbuild/BUILD/kernel-2.6.32-220.23.1.el6/ cp -a linux-2.6.32-220.23.1.el6.x86_64/ linux-2.6.32-220.23.1.el6.x86_64_new
4、为内核打fullnat的patch
cd linux-2.6.32-220.23.1.el6.x86_64_new/ patch -p1 < /usr/local/src/lvs-2.6.32-220.23.1.el6.patch cp .config ~/rpmbuild/SOURCES/config-x86_64-generic
5、删除原来内核源码目录中的.config文件。
cd ~/rpmbuild/BUILD/kernel-2.6.32-220.23.1.el6/linux-2.6.32-220.23.1.el6.x86_64 rm -rf .config
不删的话，会在最后打rpm时遇到报错
6、打自己的patch
cd ~/rpmbuild/BUILD/kernel-2.6.32-220.23.1.el6/ diff -uNr linux-2.6.32-220.23.1.el6.x86_64 linux-2.6.32-220.23.1.el6.x86_64_new/ > ../../SOURCES/lvs-2.6.32-220.23.1.el6.patch
7、编辑kernel.spec
vim ~/rpmbuild/SPECS/kernel.spec
line：9 打上个版本号
%define dist .e27
line：22 打上个名称的标记
%define distro_build fnat.shanks
line：605 标记下自己的patch
Patch999999: lvs-2.6.32-220.23.1.el6.patch
line：915 让自己的patch生效
ApplyOptionalPatch lvs-2.6.32-220.23.1.el6.patch
8、打rpm
rpmbuild -bb --with baseonly --with firmware --without debuginfo --target=x86_64 SPECS/kernel.spec
在这里如果遇到这样的报错：
+ cp /root/rpmbuild/SOURCES/Module.kabi_x86_64 /root/rpmbuild/BUILDROOT/kernel-2.6.32-fnat.shanks.e27.x86_64/Module.kabi
+ /root/rpmbuild/SOURCES/check-kabi -k /root/rpmbuild/BUILDROOT/kernel-2.6.32-fnat.shanks.e27.x86_64/Module.kabi -s Module.symvers
*** ERROR - ABI BREAKAGE WAS DETECTED ***
The following symbols have been changed (this will cause an ABI breakage):
register_ip_vs_scheduler
unregister_ip_vs_scheduler
+ exit 1
error: Bad exit status from /var/tmp/rpm-tmp.0Wfj33 (%build)
RPM build errors:
Bad exit status from /var/tmp/rpm-tmp.0Wfj33 (%build)
可以在rpmbuild的时候加上--without kabichk
参考：https://fedoraproject.org/wiki/Building_a_custom_kernel/zh-cn
http://wiki.centos.org/HowTos/Custom_Kernel