1.Sersync 项目利用 Inotify 和 Rsync 技术实现对服务器数据实时同步的解决方案，其中 Inotify 用于监控 Sersync 所在服务器上文件系统的事件变化，而 Rsync 是目前广泛使用的本地以及异地数据同步工具，其优点是只对变化的目录数据操作，甚至是一个文件不同的部分进行同步，所以其优势大大超过使用挂接文件系统或 scp 等方式进行镜像同步。（国人周洋）
2.同步工具目前使用比较多的同步工具为 Inotify-tools 和 Openduckbill，sersync。Sersync 优于 Inotify-tools 和 Openduckbill
sersync服务要放到nfs的服务器上
nfs01客户端client
backup服务端service
1.测试之前一定要确认rsync服务都开启
[root@nfs01 /upload]# systemctl is-active rsyncd
active
[root@nfs01 /upload]# systemctl is-enabled rsyncd
disabled
1.在客户端创建俩个目录用来存放软件
mkdir -p /server/{scripts,tools}
下载安装此压缩包并解压
sersync_installdir_64bit.zip
https://pan.baidu.com/s/10N4LCjSdwpsSVr4PnrNsqw
提取码：dapn
[15:21 root@nfs01 /server/tools]# unzip sersync_installdir_64bit.zip
Archive: sersync_installdir_64bit.zip
creating: sersync_installdir_64bit/
creating: sersync_installdir_64bit/sersync/
creating: sersync_installdir_64bit/sersync/bin/
inflating: sersync_installdir_64bit/sersync/bin/sersync
creating: sersync_installdir_64bit/sersync/conf/
inflating: sersync_installdir_64bit/sersync/conf/confxml.xml
creating: sersync_installdir_64bit/sersync/logs/
查看一下
[15:21 root@nfs01 /server/tools]# tree
.
├── sersync_installdir_64bit
│ └── sersync
│ ├── bin
│ │ └── sersync
│ ├── conf
│ │ └── confxml.xml
│ └── logs
└── sersync_installdir_64bit.zip \\此文件
2.在客户端创建目录，把文件移动到/app下
/app/目录在企业中一般用来放代码文件
[15:24 root@nfs01 ~]#mkdir -p /app
[15:24 root@nfs01 ~]#mv /server/tools/sersync_installdir_64bit/sersync /app/
查看一下
[15:27 root@nfs01 ~]# tree /app/
/app/
└── sersync
├── bin
│ └── sersync
├── conf
│ └── confxml.xml
└── logs
3.在客户端添加执行权限,给此文件创建一个软链接
执行完成后试着敲一下sersync的命令
指定软连接使他变为命令(用全路径可以执行，为让他变的方便。）使他变为命令
[15:27 root@nfs01 ~]#chmod +x /app/sersync/bin/sersync
[15:27 root@nfs01 ~]#
[15:27 root@nfs01 ~]# ln -s /app/sersync/bin/sersync /sbin/
[15:29 root@nfs01 ~]# sersync
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
daemon thread num: 10
parse xml config file
XML Parsing error inside file 'confxml.xml'.
Error: File not found
At line 0, column 0.
4.去服务端rsync的配置文件添加nfsbackup模块
[15:29 root@backup ~]#vim /etc/rsyncd.conf
....
#####################################
[nfsbackup]
comment = www by old0boy 13:14 2019-5-20
path = /nfsbackup
"/etc/rsyncd.conf" 31L, 732C written
5.服务端创建目录并修改权限
[15:39 root@backup ~]# mkdir -p /nfsbackup
[15:40 root@backup ~]# chown rsync.rsync /nfsbackup/
[15:41 root@backup ~]# ll -d /nfsbackup/
drwxr-xr-x 2 rsync rsync 6 May 24 15:40 /nfsbackup/
6.在服务端本地测试推送一下
[15:41 root@backup ~]# rsync -avz /etc/hostname rsync_backup@172.16.1.41::nfsbackup
Password:
sending incremental file list
hostname
sent 101 bytes received 43 bytes 32.00 bytes/sec
total size is 7 speedup is 0.05
7.再回到客户端推送一下
[15:41 root@nfs01 ~]# rsync -avz /etc/hostname rsync_backup@172.16.1.41::nfsbackup
Password:
sending incremental file list
sent 50 bytes received 20 bytes 20.00 bytes/sec
total size is 7 speedup is 0.10
8.客户端查看文件下的xml文件
/app/sersync/conf/confxml.xml
https://www.processon.com/view/link/5bf911c0e4b006dc83a24929
image.png
[15:53 root@nfs01 ~]#vim /app/sersync/conf/confxml.xml
1 <?xml version="1.0" encoding="ISO-8859-1"?>
2 <head version="2.5">
3 <host hostip="localhost" port="8008"></host>
4 <debug start="false"/>
5 <fileSystem xfs="false"/> 文件系统\\修改为true
6 <filter start="false"> \\过滤
7 <exclude expression="(.*)\.svn"></exclude> \\排除--exclude
8 <exclude expression="(.*)\.gz"></exclude> \\排除--exclude
9 <exclude expression="^info/*"></exclude> \\排除--exclude
10 <exclude expression="^static/*"></exclude> \\排除--exclude
11 <delete start="true"/>
12 </filter>
13 </inotify> \\配置inotify的监控事件，实时监控目录变量 是否有变化
14 <createFolder start="true"/>
15 <createFile start="false"/>
16 <closeWrite start="true"/>
17 <moveFrom start="true"/>
18 <moveTo start="true"/>
19 <attrib start="false"/> \\文件属性
20 <modify start="false"/> \\mtime修改时间
21 </inotify> \\sersync什么时候用rsync推送
22
23 <sersync>
24 <localpath watch="/opt/tongbu"> \\要监控哪个目录 发生变量
25 <remote ip="127.0.0.1" name="tongbu1"/> \\rsync服务端ip name=模块名
26 <!--<remote ip="192.168.8.39" name="tongbu"/>-->
27 <!--<remote ip="192.168.8.40" name="tongbu"/>-->
28 </localpath>
29 <rsync> \\rsync命令配置
30 <commonParams params="-artuz"/> \\rsync的参数
31 <auth start="false" users="root" passwordfile="/etc/rsync.pas"/> \\认证哪个用户和密码文件
32 <userDefinedPort start="false" port="874"/><!-- port=874 -->
33 <timeout start="false" time="100"/><!-- timeout=100 -->
34 <ssh start="false"/>
35 </rsync>
36 <failLog path="/var/log/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
\\rsync错误日志指定的路径
37 <crontab start="false" schedule="600"><!--600mins--> \\定时任务
38 <crontabfilter start="false">
39 <exclude expression="*.php"></exclude>
40 <exclude expression="info/*"></exclude>
41 </crontabfilter>
42 </crontab>
43 <plugin start="false" name="command"/>
44 </sersync>
45
46 <plugin name="command">
47 <param prefix="/bin/sh" suffix="" ignoreError="true"/> <!--prefix /opt/tongbu/mmm.sh suffix-->
48 <filter start="false">
49 <include expression="(.*)\.php"/>
50 <include expression="(.*)\.sh"/>
51 </filter>
52 </plugin>
53
54 <plugin name="socket">
55 <localpath watch="/opt/tongbu">
56 <deshost ip="192.168.138.20" port="8009"/>
57 </localpath>
58 </plugin>
59 <plugin name="refreshCDN">
60 <localpath watch="/data0/htdocs/cms.xoyo.com/site/">
61 <cdninfo domainname="ccms.chinacache.com" port="80" username="xxxx" passwd="xxxx"/>
62 <sendurl base="http://pic.xoyo.com/cms"/>
63 <regexurl regex="false" match="cms.xoyo.com/site([/a-zA-Z0-9]*).xoyo.com/images"/>
64 </localpath>
65 </plugin>
66 </head>
修改前记得先拷贝一份备份
[16:17 root@nfs01 ~]# cp /app/sersync/conf/confxml.xml /app/sersync/conf/confxml.xml.bak
9.在客户端修改此配置文件，如下内容即可
[16:17 root@nfs01 ~]# vim /app/sersync/conf/confxml.xml
....
5 <fileSystem xfs="true"/>
....
23 <sersync>
24 <localpath watch="/upload">
25 <remote ip="172.16.1.41" name="nfsbackup"/>
26 <!--<remote ip="192.168.8.39" name="tongbu"/>-->
27 <!--<remote ip="192.168.8.40" name="tongbu"/>-->
28 </localpath>
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>
36 <failLog path="/var/log/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
10.然后用diff对比一下修改的内容
diff /app/sersync/conf/confxml.xml /app/sersync/conf/confxml.xml.bak
5c5
< <fileSystem xfs="true"/>
---
> <fileSystem xfs="false"/>
24,25c24,25
< <localpath watch="/upload">
< <remote ip="172.16.1.41" name="nfsbackup"/>
---
> <localpath watch="/opt/tongbu">
> <remote ip="127.0.0.1" name="tongbu1"/>
30,31c30,31
< <commonParams params="-az"/>
< <auth start="true" users="rsync_backup" passwordfile="/etc/rsync.password"/>
---
> <commonParams params="-artuz"/>
> <auth start="false" users="root" passwordfile="/etc/rsync.pas"/>
36c36
< <failLog path="/var/log/rsync_faii_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
---
> <failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once-->
11.接着在客户端配置如下的环境
[16:24 root@nfs01 ~]# echo '123456' >/etc/rsync.password
[16:24 root@nfs01 ~]# chmod 600 /etc/rsync.password
[16:24 root@nfs01 ~]# mkdir -p /upload
[16:25 root@nfs01 ~]# chown nfsnobody.nfsnobody /upload/
[16:25 root@nfs01 ~]# ll -d /upload/
drwxr-xr-x 2 nfsnobody nfsnobody 21 May 23 08:42 /upload/
12.然后查看sersync配置参数
[16:25 root@nfs01 ~]# 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
_______________________________________________________
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
```
13.在客户端创建文件测试一下
```
[16:50 root@nfs01 ~]# touch /upload/oldboy{01..10}.txt
[19:32 root@nfs01 ~]# ll /upload/
total 0
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy01.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy02.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy03.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy04.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy05.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy06.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy07.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy08.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy09.txt
-rw-r--r-- 1 root root 0 May 26 19:32 oldboy10.txt
```
14.推送到服务端：
```
sersync -rd -o /app/sersync/conf/confxml.xml
```
我们要把这条命令放到 /etc/rc.d/rc.local 开机自启动里，不然重启后就失效了。
```
[16:52 root@nfs01 ~]# tail -1 /etc/rc.d/rc.local
sersync -rd -o /app/sersync/conf/confxml.xml
[16:52 root@nfs01 ~]# sersync -rd -o /app/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: -r rsync all the local files to the remote servers before the sersync work
option: -d run as a daemon
option: -o config xml name： /app/sersync/conf/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost host port: 8008
WARNING XFS FILE SYSTEM WORK
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 /upload && 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: /upload
```
15.在backup服务端查看:实时同步了
```
[16:51 root@backup ~]# ll /nfsbackup/
total 0
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy01.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy02.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy03.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy04.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy05.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy06.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy07.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy08.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy09.txt
-rw-r--r-- 1 rsync rsync 0 May 24 16:52 oldboy10.txt
```
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