Keepalived-1.2.9集群的安装及配置

Keepalived-1.2.9集群的安装及配置

[日期：2013-11-13]     来源：Linux社区  作者：zzban1111     [字体：大 中 小]

说明：

一、目 的：本文实现的Linux集群是基于Keepalived-1.2.9软件实现，

二、难 点：实现虚拟IP（VIP）自动切换的同时，还要同时实现虚拟MAC地址（VMAC）的切换，即无论集群中的Host如何切换，对外访问的IP和MAC始终不变

三、适用环境：当对外路由或交换机绑定主机MAC时适用

四、说 明：若无须对外绑定MAC地址，则大可简化如下配置

1. 环境及软件：

1) 系统：Debian6 amd64

2) 内核：linux 3.2.0-0.bpo.4-amd64

3) 软件：keepalived-1.2.9

2. 配置：

MASTER设备IP： eth0: 10.10.1.200/24 eth1:192.168.61.253/21

BACKUP设备IP： eth0: 10.10.1.100/24 eth1:192.168.61.252/21

VIP： 192.168.61.248/21

3. 安装步骤：

1）升级当前Debian系统内核linux 2.6.32

a) 修改Debian源文件/etc/apt/sources.list，添加一个向后兼容的源(源地址如下)

deb http://ftp.cn.debian.org/debian-backports squeeze-backports main

b) 更新Debian源文件关联并升级系统内核至3.2.0

# aptitude update

# aptitude -t squeeze-backports install linux 3.2.0-0.bpo.4-amd64

如果编译NVDIA的官方驱动的话，还要装：

# aptitude -t squeeze-backports install linux-headers-3.2.0.bpo.4-amd64

 

2) 安装keepalived-1.2.9

a) 首先要安装keepalived所依赖的组件

# aptitude install make gcc libpopt-dev libnl-dev libcurl4-openssl-dev

 

b) 将keepalived-1.2.9.tar.gz文件拷贝到/usr/local/soft下，解压，编译并安装到/usr/local/keepalived

# mkdir /usr/local/soft

通过ftp将文件拷贝至/usr/local/soft

# cd /usr/local/soft

# tar zxvf keepalived-1.2.9.tar.gz

# cd keepalived-1.2.9

# ./configure --prefix=/usr/local/keepalived

# make && make install

c) 重置keepalived相关文件，以便开机自动启动

# cp /usr/local/keepalived/sbin/keepalived /usr/sbin

# mkdir /etc/sysconfig

# cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig

# cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/

d) 修改keepalived启动脚本

# vi /etc/init.d/keepalived

修改/etc/init.d/keepalived文件，部分片段如下（蓝色标记为注释内容，红色标记为修改内容）：

……

#. /etc/rc.d/init.d/functions

. /lib/lsb/init-functions

# Source configuration file (we set KEEPALIVED_OPTIONS there)

. /etc/sysconfig/keepalived

RETVAL=0

prog="keepalived"

start() {

echo -n $"Starting $prog: "

# keepalived ${KEEPALIVED_OPTIONS}

keepalived -D

RETVAL=$?

echo

[ $RETVAL -eq 0 ] && touch /var/lock/$prog

}

stop() {

echo -n $"Stopping $prog: "

killproc keepalived

RETVAL=$?

echo

[ $RETVAL -eq 0 ] && rm -f /var/lock/$prog

}

……

condrestart)

if [ -f /var/lock/$prog ]; then

stop

start

fi

;;

……