实时同步sersync实战

实时同步sersync实战

什么是实时同步

实时同步是一种只要当前目录发生变化则会触发一个事件，事件触发后会将变化的目录同步至远程服务器。

sersync和rsync+inotify对比

提到数据同步就必然会谈到rsync，一般简单的服务器数据传输会使用ftp/sftp等方式，但是这样的方式效率不高，不支持差异化增量同步也不支持实时传输。针对数据实时同步需求大多数人会选择rsync+inotify-tools的解决方案，但是这样的方案也存在一些缺陷（文章中会具体指出），sersync是国人基于前两者开发的工具，不仅保留了优点同时还强化了实时监控，文件过滤，简化配置等功能，帮助用户提高运行效率，节省时间和网络资源。

项目地址

sersync项目实战

1）环境准备

角色	外网IP(NAT)	内网IP(LAN)	安装工具
web01	eth0:10.0.0.7	eth1:172.16.1.7	部署代码（提交作业）
nfs-server	eth0:10.0.0.31	eth1:172.16.1.31	rsync+inotify+sersync
backup	eth0:10.0.0.41	eth1:172.16.1.41	rsync-server

1.实时同步哪台服务器的目录，那么就在哪台服务器上安装sersync

2.只要安装sersync 就必须安装rsync和inotify

安装rsync的服务端（backup）

1）安装rsync服务

[root@backup ~]# yum install -y rsync

2）配置文件

[root@backup ~]# vim /etc/rsyncd.conf

uid = www

gid = www

port = 873

fake super = yes

use chroot = no

max connections = 200

timeout = 600

ignore errors

read only = false

list = false

auth users = rsync_backup

secrets file = /etc/rsync.passwd

log file = /var/log/rsyncd.log

#####################################

[zls]

comment = welcome to oldboyedu backup!

path = /backup

[nfs]

comment = welcome to oldboyedu backup!

path = /data

3）创建用户

[root@backup ~]# groupadd www -g 666

[root@backup ~]# useradd www -u 666 -g 666 -s /sbin/nologin -M

4）创建目录并授权

[root@backup ~]# mkdir /data  /backup

[root@backup ~]# chown -R www.www /data/ /backup/

5）创建虚拟用户的密码文件并授权

[root@backup ~]# echo 'rsync_backup:123' > /etc/rsync.passwd

chmod 600 /etc/rsync.passwd

6）启动rsync服务

[root@backup ~]# systemctl start rsyncd

NFS服务端部署sersync

1）安装sersync需要依赖rsync和inotify

[root@nfs ~]# yum install -y rsync inotify-tools

2）下载sersync

[root@nfs ~]# wget https://raw.githubusercontent.com/wsgzao/sersync/master/sersync2.5.4_64bit_binary_stable_final.tar.gz

3）部署sersync

源码包：解压生成编译安装

解压：

[root@nfs ~]# tar xf sersync2.5.4_64bit_binary_stable_final.tar.gz

4）移动并改名

[root@nfs ~]# mv GNU-Linux-x86 /usr/local/sersync

5）编辑配置文件

[root@nfs ~]# vim /usr/local/sersync/confxml.xml

    <inotify>

        <delete start="true"/>

        <createFolder start="true"/>

        <createFile start="true"/>

        <closeWrite start="true"/>

        <moveFrom start="true"/>

        <moveTo start="true"/>

        <attrib start="true"/>

        <modify start="true"/>

    </inotify>

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

    <sersync>

        #监控的目录,改成/data

        <localpath watch="/opt/tongbu">

            #推送的IP（backup服务的IP）172.16.1.41 ，name是模块名

            <remote ip="127.0.0.1" name="tongbu1"/>

            <!--<remote ip="192.168.8.39" name="tongbu"/>-->

            <!--<remote ip="192.168.8.40" name="tongbu"/>-->

        </localpath>

        <rsync>

            #执行rsync的参数改成 -az

            <commonParams params="-artuz"/>

            #虚拟用户的用户名和密码文件,开启认证start=true  rsync_backup    /etc/rsync.pass

            <auth start="false" users="root" passwordfile="/etc/rsync.pas"/>

            <userDefinedPort start="false" port="874"/><!-- port=874 -->

            #设置超时时间

            <timeout start="true" 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>

#完整配置文件

[root@nfs ~]# cat /usr/local/sersync/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="true"/>

	<closeWrite start="true"/>

	<moveFrom start="true"/>

	<moveTo start="true"/>

	<attrib start="true"/>

	<modify start="true"/>

    </inotify>

    <sersync>

	<localpath watch="/data">

	    <remote ip="172.16.1.41" name="nfs"/>

	    <!--<remote ip="192.168.8.39" name="tongbu"/>-->

	    <!--<remote ip="192.168.8.40" name="tongbu"/>-->

	</localpath>

	<rsync>

	    <commonParams params="-az"/>

	    <auth start="true" users="rsync_backup" passwordfile="/etc/rsync.pass"/>

	    <userDefinedPort start="false" port="874"/><!-- port=874 -->

	    <timeout start="true" 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>

6）创建虚拟用户的密码文件,并授权

[root@nfs sersync]# echo '123' > /etc/rsync.pass

[root@nfs sersync]# chmod 600 /etc/rsync.pass

7）查看帮助

[root@nfs sersync]# /usr/local/sersync/sersync2 -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

_______________________________________________________

参数-d:启用守护进程模式

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

c参数-n: 指定开启守护线程的数量，默认为10个

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

________________________________________________________________

8）启动sersync

[root@nfs data]# /usr/local/sersync/sersync2 -rdo /usr/local/sersync/confxml.xml

------------------------------------------------rsync服务端--------------------------------------------------

1）安装

[root@backup ~]# yum install -y rsync

2）改配置

[root@backup ~]# vim /etc/rsyncd.conf

uid = rsync

gid = rsync

port = 873

fake super = yes

use chroot = no

max connections = 200

timeout = 600

ignore errors

read only = false

list = false

auth users = rsync_backup

secrets file = /etc/rsync.passwd

log file = /var/log/rsyncd.log

#####################################

[zls]

comment = welcome to oldboyedu backup!

path = /backup

3）创建系统用户

[root@backup ~]# useradd rsync -s /sbin/nologin  -M

4）创建虚拟用户及密码文件并授权

[root@backup ~]# echo 'rsync_backup:123' > /etc/rsync.passwd

[root@backup ~]# chmod 600 /etc/rsync.passwd

5）创建目录并授权

[root@backup ~]# mkdir /backup

[root@backup ~]# chown -R rsync.rsync /backup

6）启动服务并加入开机自启

[root@backup ~]# systemctl start rsyncd

[root@backup ~]# systemctl enable rsyncd

----------------------------------------------------------rsync的客户端（nfs）------------------------------------------------------------------

1）安装sersync（rsync+inotify）

[root@nfs ~]# yum install -y rsync inotify-tools

2）安装sersync

下载：

[root@nfs ~]# wget https://raw.githubusercontent.com/wsgzao/sersync/master/sersync2.5.4_64bit_binary_stable_final.tar.gz

解压：

[root@nfs ~]# tar xf sersync2.5.4_64bit_binary_stable_final.tar.gz

移动并改名：

[root@nfs ~]# mv GNU-Linux-x86 /usr/local/sersync

3）修改配置文件

[root@nfs ~]# vim /usr/local/sersync/confxml.xml

    <inotify>

        <delete start="true"/>

        <createFolder start="true"/>

        <createFile start="true"/>

        <closeWrite start="true"/>

        <moveFrom start="true"/>

        <moveTo start="true"/>

        <attrib start="true"/>

        <modify start="true"/>

    </inotify>

    <sersync>

        <localpath watch="/zls">

            <remote ip="172.16.1.41" name="zls"/>

            <!--<remote ip="192.168.8.39" name="tongbu"/>-->

            <!--<remote ip="192.168.8.40" name="tongbu"/>-->

        </localpath>

        <rsync>

            <commonParams params="-az"/>

            <auth start="true" users="rsync_backup" passwordfile="/etc/rsync.pas"/>

            <userDefinedPort start="false" port="874"/><!-- port=874 -->

            <timeout start="true" time="100"/><!-- timeout=100 -->

            <ssh start="false"/>

        </rsync>

4）创建目录

[root@nfs ~]# mkdir /zls

5）创建密码文件并授权

[root@nfs ~]# echo '123' > /etc/rsync.pas

[root@nfs ~]# chmod 600 /etc/rsync.pas

6）启动sersync

[root@nfs ~]# /usr/local/sersync/sersync2 -rdo /usr/local/sersync/confxml.xml

sersync 就是rsync的客户端

底层调用：rsync和inotify