LVS fullnat安装

阿里巴巴开源LVS fullnat  （内核要求2.6.32）

1、下载 fullnat LVS源码

wget https://github.com/alibaba/LVS/tree/lvs_v2               #版本2，建议使用这个版本

wget https://github.com/alibaba/LVS/archive/master.zip

unzip aster.zip;  #解压下载的源码，主要有以下文件目录，其中 kernel目录是内核源码，tools里有ipvsadm 、keepalived、quagga（可以使用Quagga将linux机器打造成一台功能完备的路由器）、rpm

AUTHORS  CHANGES  docs  kernel  README.md  tools

2、内核编译&安装

cd  /usr/local/src/LVS-lvs_v2/kernel

请先安装好 perl perl-devel popt popt-devel libnl libnl-devel libssl libssl-devel openssl openssl-devel popt-static yum -y install ncurses ncurses-devel

去 掉 udev，udev的编译要求比较严格，容易在启动时报udev: missing sysfs features; please update the kernel or disable the kernel's CONFIG_SYSFS_DEPRECATED option;出现这个错问题也不大

vi .config

CONFIG_SYSFS_DEPRECATED=n

CONFIG_SYSFS_DEPRECATED_V2=n

mkdir -p /usr/src/kernels/2.6.32

make O=/usr/src/kernels/2.6.32 menuconfig;   #选择模块需要编译的，exit退出，选择 YES保存

make mrproper

make O=/usr/src/kernels/2.6.32

make O=/usr/src/kernels/2.6.32 modules_install install

make时遇错

/bin/sh: perl: command not found

make[2]: *** [scripts/mod/empty.o] Error 127

make[1]: *** [scripts/mod] Error 2

make: *** [scripts] Error 2

解决：yum -y perl perl-devel

make install遇错

WARNING: Couldn't open directory /lib/modules/2.6.32: No such file or directory

解决：ln -s /lib/modules/`uname -r` /lib/modules/2.6.32

问题：make install时报

sh /usr/local/src/LVS-lvs_v2/kernel/arch/x86/boot/install.sh 2.6.32 arch/x86/boot/bzImage \

                System.map "/boot"

ERROR: modinfo: could not find module sd_mod

ERROR: modinfo: could not find module crc_t10dif

解答：这是因为现在运行的kernel有这些模块，而新编译的内核没有这些模块。如果不需要可直接忽视，如果需要编译到新的内核中，请修改 .config的相关参数为=m

使用新编译的内核vi /boot/grub/grub.conf 修改

default=0

reboot 重启系统，uname -r查看到的版本应该是2.6.32

3、安装keepalived

要求先安装好 openssl openssl-devel popt-static 

cd  /usr/local/src/master/tools/keepalived/

./configure --prefix=/usr/local/keepalived --with-kernel-dir=/usr/local/src/LVS-lvs_v2/kernel;

make;

最终结果：

Keepalived configuration

------------------------

Keepalived version       : 1.2.2

Compiler                 : gcc

Compiler flags           : -g -O2

Extra Lib                : -lpopt -lssl -lcrypto  -lnl

Use IPVS Framework       : Yes

IPVS sync daemon support : Yes

IPVS use libnl           : Yes

Use VRRP Framework       : Yes

Use Debug flags          : No

make install;

默认路径： /usr/local

配置文件： /usr/local/etc/keepalived/keepalived.conf

自动启动脚本模板： /usr/local/etc/rc.d/init.d/keepalived

复制安装目录下的 /usr/local/keepalived/etc/rc.d/init.d/keepalived 复制到 /etc/init.d/

把/etc/init.d/keepalived  文件中

. /etc/sysconfig/keepalived 改为  

. /usr/local/keepalived/etc/sysconfig/keepalived

keepalived启动时报 Starting keepalived: /bin/bash: keepalived: command not found

解决方法：  ln -s prefix/sbin/keepalived /usr/sbin/

4、安装ipvsadm

依赖 libnl libnl-devel  libssl-devel libssl

cd /usr/local/src/LVS-lvs_v2/tools/ipvsadm/

make;

make install;

make遇错

gcc -Wall -Wunused -Wstrict-prototypes -g -o ipvsadm ipvsadm.o config_stream.o dynamic_array.o ../keepalived/keepalived/libipvs-2.6/libipvs.a -lpopt  -lnl

/usr/bin/ld: cannot find -lnl

collect2: ld returned 1 exit status

make: *** [ipvsadm] Error 1

解决：yum -y install libnl libnl-devel  libssl-devel libssl

5、安装quagga

cd /usr/local/src/LVS-lvs_v2/tools/quagga

./configure --prefix=/usr/local/quagga

make;

make install;

接下来的配置请参照 LVS操作手册

查看IPVS详情

查看 /proc/net目录下的

ip_vs            ip_vs_app        ip_vs_conn       ip_vs_conn_sync  ip_vs_ext_stats  ip_vs_stats