lvs fullnat部署手冊（一）fullnat內核編譯篇

fullnat開源已經有一陣子了，內核版本爲2.6.32-220.23.1.e16，項目地址http://kb.linuxvirtualserver.org/wiki/IPVS_FULLNAT_and_SYNPROXY。本屌編譯測試環境以下：

centos6.3 64位

編譯過程參照官方作法，只是融入後續的打rpm包的部分。過程以下：

1、下載相關代碼：

   下載 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

2、編譯內核

一、安裝kernel-2.6.32-220.23.1.el6.src.rpm

rpm -ivh kernel-2.6.32-220.23.1.el6.src.rpm

二、生成內核源碼

   默認的，你會在root家目錄下看到rpmbuild目

cd ~/rpmbuild/SPECS
rpmbuild -bp kernel.spec

三、對生成的內核源碼打patch默認的

#在/usr/local/src下解壓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 .
#淘寶將IP_VS改爲了22，測試時遇到些麻煩，所以改成20了。
#vim .config
CONFIG_IP_VS_TAB_BITS=20
#你能夠修改Makefile把內核的名稱作下標記（line：4）
EXTRAVERSION = .FNAT.shanks.e27.x86_64

四、make

make -j16
make modules_install
make install;

五、配置grub.conf

#vim /boot/grub/grub.conf
default=0

3、reboot

   reboot以後uname -r看下是否是你想要的內核。

4、打內核rpm包

一、安裝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

二、生成內核源碼目錄

rpmbuild -bp ~/rpmbuild/SPECS/kernel.spec

三、複製出一分內核源碼目錄

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

四、爲內核打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

五、刪除原來內核源碼目錄中的.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

   不刪的話，會在最後打rpm時遇到報錯

六、打本身的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

七、編輯kernel.spec

vim ~/rpmbuild/SPECS/kernel.spec
line：9    打上個版本號
    %define dist .e27
line：22    打上個名稱的標記
    %define distro_build fnat.shanks
line：605    標記下本身的patch
    Patch999999: lvs-2.6.32-220.23.1.el6.patch
line：915    讓本身的patch生效
    ApplyOptionalPatch lvs-2.6.32-220.23.1.el6.patch

八、打rpm

rpmbuild -bb --with baseonly --with firmware --without debuginfo --target=x86_64 SPECS/kernel.spec

在這裏若是遇到這樣的報錯：
+ 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)
能夠在rpmbuild的時候加上--without kabichk

參考：https://fedoraproject.org/wiki/Building_a_custom_kernel/zh-cn

   http://wiki.centos.org/HowTos/Custom_Kernel