29 <rsync>
30 <commonParams params="-az"/>
31 <auth start="true" users="rsync_backup" passwordfile="/etc/rsync.password"/>
32 <userDefinedPort start="false" port="874"/><!-- port=874 -->
33 <timeout start="false" time="100"/><!-- timeout=100 -->
34 <ssh start="false"/>
35 </rsync>
配置文件最终内容：
[root@nfs01 tools]# cat /usr/local/sersync/conf/confxml.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<head version="2.5">
<host hostip="localhost" port="8008"></host>
<debug start="false"/>
<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="/data">
<remote ip="172.16.1.41"/>
<!--<remote ip="192.168.8.39"/>-->
<!--<remote ip="192.168.8.40"/>-->
</localpath>
<rsync>
<commonParams params="-az"/>
<auth start="true" users="rsync_backup" passwordfile="/etc/rsync.password"/>
<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"/>
</sersync>
<plugin>
<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>
<localpath watch="/opt/tongbu">
<deshost ip="192.168.138.20" port="8009"/>
</localpath>
</plugin>
<plugin>
<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>
1.3 第三里程碑： 启动sersync 1.3.1 修改文件的权限（可执行）首先让程序让文件有执行权限
[root@nfs01 bin]# chmod a+x sersync
[root@nfs01 bin]# ll
total 1768
-rwxr-xr-x 1 root root 1810128 Oct 26 2011 sersync
1.3.2 查看软件的帮助信息
[root@nfs01 bin]# ./sersync -h
set the system param
execute：echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute：echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
_______________________________________________________
重要参数-d:启用守护进程模式
重要参数-r:在监控前，将监控目录与远程主机用rsync命令推送一遍
参数-n: 指定开启守护线程的数量，默认为10个
重要参数-o:指定配置文件，默认使用confxml.xml文件
参数-m:单独启用其他模块，使用 -m refreshCDN 开启刷新CDN模块
参数-m:单独启用其他模块，使用 -m socket 开启socket模块
参数-m:单独启用其他模块，使用 -m http 开启http模块
不加-m参数，则默认执行同步程序
________________________________________________________________
1.3.3 在程序的bin目录下启动程序./sersync -dro /usr/local/sersync/conf/confxml.xml
1.3.4 启动方法二将/usr/local/sersync/bin/程序的bin目录添加到PATH中
export PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin:/usr/local/sersync/bin/
然后sersync命令就能直接使用
[root@nfs01 scripts]# sersync -dro /usr/local/sersync/conf/confxml.xml
set the system param
execute：echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute：echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
option: -d run as a daemon
option: -r rsync all the local files to the remote servers before the sersync work
option: -o config xml name： /usr/local/sersync/conf/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost host port: 8008
daemon start，sersync run behind the console
use rsync password-file :
user is rsync_backup
passwordfile is /etc/rsync.password
config xml parse success
please set /etc/rsyncd.conf max connections=0 Manually
sersync working thread 12 = 1(primary thread) + 1(fail retry thread) + 10(daemon sub threads)
Max threads numbers is: 22 = 12(Thread pool nums) + 10(Sub threads)
please according your cpu ，use -n param to adjust the cpu rate
------------------------------------------
rsync the directory recursivly to the remote servers once
working please wait...
execute command: cd /data && rsync -az -R --delete ./ rsync_backup@172.16.1.41::nfsbackup --password-file=/etc/rsync.password >/dev/null 2>&1
run the sersync:
watch path is: /data
1.4 Inotify与 sersync总结对比 1.4.1 Inotify实时并发：结论：经过测试，每秒200文件并发，数据同步几乎无延迟（小于1秒）
1.4.2 inotify 优点：1）监控文件系统事件变化，通过同步工具实现实时数据同步。
1.4.3 inotify 缺点1）并发如果大于200个文件（10-100k），同步就会有延迟
2）我们前面写的脚本，每次都是全部推送一次，但确实是增量的。也可以只同步变化的文件，不变化的不理。