rsync+sersync2实现服务器文件镜像
快速搭建镜像服务器，用于cms发布，服务器资料备份等，采用国人开发的开源serrsync比以前繁琐的inotify+rsync的配置简单很多，当然serrsync也是采用的inotify+rsync
一.在镜像目标服务器部署rsync服务
目标服务器ip：192.168.113.132
1.1
新建/etc/rsyncd.conf 内容如下：
uid=root
gid=root
max connections=4
use chroot=no
strict modes=yes
port=873
log file=/var/log/rsyncd.log
pid file=/var/run/rsyncd.pid
lock file=/var/run/rsyncd.lock
[backup]
path=/home/backup/
comment=testrsync
read only=no
list=no
auth users=root
secrets file=/etc/rsync.pas
hosts allow = 192.168.113.132,192.168.113.131,127.0.0.1
1.2
建立密码文件
echo "root:abc" >/etc/rsync.pas 此处的密码abc与root用户的系统密码无关
chmod 600 /etc/rsync.pas
1.3
启动rsync
rsync --daemon
二：源服务器配置：
服务器地址：192.168.113.131
2.0
配置rsync客户端
echo "abc" > /etc/rsync.pas
chmod 600 /etc/rsync.pas
注意此处的rsync.pas格式与rsync服务端的格式不同，本人最初在此处耗费了很多时间。
另外一种方式，不用建立密码文件，export RSYNC_PASSWORD=abc
2.1
安装serrsync2
下载最新版serrsync2 http://code.google.com/p/sersync/downloads/detail?name=sersync2.5_32bit_binary_stable_final.tar.gz
2.2
tar -zxvf sersync2.5_32bit_binary_stable_final.tar.gz
cd GNU-Linux-x86
cp confxml.xml a.xml
vi a.xml,录入以下内容
<?xml version="1.0" encoding="ISO-8859-1"?>
<head version="2.5">
<host hostip="localhost" port="8008"></host>
<debug start="true"/>
<fileSystem xfs="false"/>
<filter start="false">
<exclude expression="(.*)\.svn"></exclude>
<exclude expression="(.*)\.gz"></exclude>
<exclude expression="^info/*"></exclude>
<exclude expression="^static/*"></exclude>
</filter>
<inotify>
<delete start="true"/>
<createFolder start="true"/>
<createFile start="false"/>
<closeWrite start="true"/>
<moveFrom start="true"/>
<moveTo start="true"/>
<attrib start="false"/>
<modify start="false"/>
</inotify>
<sersync>
<localpath watch="/home/backup">
<remote ip="192.168.113.132" name="backup"/>
<!--<remote ip="192.168.8.39" name="tongbu"/>-->
<!--<remote ip="192.168.8.40" name="tongbu"/>-->
</localpath>
<rsync>
<commonParams params="-artuz"/>
<auth start="true" users="root" passwordfile="/etc/rsync.pas"/>
<userDefinedPort start="false" port="874"/><!-- port=874 -->
<timeout start="false" time="100"/><!-- timeout=100 -->
<ssh start="false"/>
</rsync>
<failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
<crontab start="false" schedule="600"><!--600mins-->
<crontabfilter start="false">
<exclude expression="*.php"></exclude>
<exclude expression="info/*"></exclude>
</crontabfilter>
</crontab>
<plugin start="false" name="command"/>
</sersync>
<plugin name="command">
<param prefix="/bin/sh" suffix="" ignoreError="true"/> <!--prefix /opt/tongbu/mmm.sh suffix-->
<filter start="false">
<include expression="(.*)\.php"/>
<include expression="(.*)\.sh"/>
</filter>
</plugin>
<plugin name="socket">
<localpath watch="/opt/tongbu">
<deshost ip="192.168.138.20" port="8009"/>
</localpath>
</plugin>
<plugin name="refreshCDN">
<localpath watch="/data0/htdocs/cms.xoyo.com/site/">
<cdninfo domainname="ccms.chinacache.com" port="80" username="xxxx" passwd="xxxx"/>
<sendurl base="http://pic.xoyo.com/cms"/>
<regexurl regex="false" match="cms.xoyo.com/site([/a-zA-Z0-9]*).xoyo.com/images"/>
</localpath>
</plugin>
</head>
2.3 启动监听服务器 ./sersync2 -o a.xml -r -d
注：有可能需要配置防火墙，打开指定ip访问873端口的限制
iptables -A INPUT -s 192.168.113.131 -p tcp -m state --state NEW -m tcp --dport 873 -j ACCEPT
iptables -A INPUT -s 192.168.113.131 -p udp -m state --state NEW -m udp --dport 873 -j ACCEPT
测试环境
rsync服务器：centerOS5.4，rsync客户端：RedHatAS5
参考
rsync资料:http://www.linuxsir.org/main/?q=node/256
serrsync资料：http://hi.baidu.com/johntech/blog/category/%BF%AA%D4%B4%CF%EE%C4%BFsersync