随着nginx的发展越是成熟，nginx的高并发、高稳定性及支持反向代理等特性使得其倍受青睐。下面笔者就来对nginx+keepalived的高可用架构进行简单搭建。笔者水平有限，仅供参考，如有不足望指正。见笑了。^_^ ^_^

一、实验环境 

系统环境：centos 6.0 x86_64

nginx版本 nginx-1.2.7

keepalived版本 keepalived-1.26.tar.gz

nginx_1  192.168.1.105  (master)

nginx_2  192.168.1.106  (backup)

vip       192.168.1.200

二、nginx安装配置

分别在105、106俩台实验机器上执行下面脚本，安装配置nginx:

#!/bin/bash

##This is a auto install nginx shell scripts.

##li  2013-03-16

##defie path

DIR1=/usr/local/src/

DIR2=/usr/local/nginx/

DIR3=http://nginx.org/download/nginx-1.2.7.tar.gz  

DIR4=/usr/local/src/nginx-1.2.7.tar.gz

DIR5=nginx-1.2.7  

yum install pcre pcre-devel -y

if

[ $UID -ne 0 ];then 

The shell scripts user must is root or adminstrator,please change user.

sleep 3

exit 

fi

if 

[ ! -d $DIR2 ];then

mkdir -p /usr/local/nginx/

else 

echo  "The directory was exit."

fi

download ()

{

cd $DIR1 ;wget $DIR3 

if 

[ ! -f $DIR4 ];then 

ehco  'The nginx source packages  download was defeated,please check.'

else 

echo  'The nginx source packages was downloaded.'

fi

}

install ()

{

tar zxvf $DIR4 ;cd  $DIR5 &&./configure --prefix=$DIR2 &&make &&make install

if 

[ $? -ne 0 ];then

echo  'The nginx insall was defeated,please check.'

else 

echo 'The nginx was insatlled.'

fi

}

start ()

{

/usr/local/nginx/sbin/nginx &&ps -ef |grep nginx |grep -v grep 

}

stop ()

{

pkill nginx 

}

download &&install &&start &&stop

三、安装配置keepalived

在105跟106上执行该脚本，内容如下：

#!/bin/bash

##auto install keepalived shell scripts.

##li 2013-03-16

##define PATH

DIR1=/usr/local/src/

DIR2=/usr/local/

DIR3=keepalived-1.2.6.tar.gz

DIR4=keepalived-1.2.6

DIR5=/usr/src/kernels/2.6.32-220.e16.x86_64/ 

if

[ $UID -ne 0 ];then

echo 'The shell scripts user must be root or administrator,please change user.'

sleep 3  

exit 0

fi  

download ()

{

cd $DIR1 ;wget http://www.keepalived.org/software/keepalived-1.2.6.tar.gz 

if 

[ $? -ne 0 ];then 

echo  'Download keepalived source package was failed,please check network or download state.'

else 

echo 'Download keepalived source package  successfully.'

fi

}

install ()

{

tar zxvf $DIR3 &&cd $DIR4 &&./configure --with-kernel-dir=$DIR5 &&make &&make install 

if 

[ $? -ne 0 ];then

echo 'Install keepalived was failed,please check.'

else 

echo 'Install keepalived successfully.'

fi

}

configure_keepalived  ()

{

cp $DIR2/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/ &&cp $DIR2/etc/sysconfig/keepalived /etc/sysconfig/ &&cp $DIR2/sbin/keepalived /sbin/  &&mkdir -p /ect/keepalived.conf 

if

[ $? -ne 0 ];then 

echo 'Keepalived configure was failed,please check.'

else 

echo 'Keepalived configure successfully.'

fi

}

PS3="Please insert select Menu:"

select i in "download" "install" "configure_keepalived"

do

$i

done   （添加这五行，在执行脚本过后会随后根据选择的选项去执行下一步动作，方便只下载等说什么的单一动作，执行完成后按 alt+c 退出）