Linux下sersync数据实时同步
作者:潇潇、寒 时间:2022-12-01 17:32:14
sersync其实是利用inotify和rsync两种软件技术来实现数据实时同步功能的,inotify是用于监听sersync所在服务器上的文件变化,结合rsync软件来进行数据同步,将数据实时同步给客户端服务器。
工作过程:在同步主服务器上开启sersync,负责监听文件系统的变化,然后调用rsync命令把更新的文件同步到目标服务器上,主服务器上安装sersync软件,目标服务器上安装rsync服务。
1、客户端配置
[root@localhost2 ~]# cat /etc/rsyncd.conf
##created by cai at 2018-2-24
uid=rsync
gid=rsync
use chroot = no
max connections = 200
timeout = 300
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log
[data]
path = /data/
ignore errors
read only = false
list = false
hosts allow = 192.168.181.128:52000/24
hosts deny = 0.0.0.0/32
auth users = rsync_body
secrets file = /etc/rsync.password
[root@localhost2 ~]# ls -ld /data/
drwxrwxrwx. 3 rsync rsync 4096 Feb 24 16:58 /data/
[root@localhost2 ~]# cat /etc/rsync.password
rsync_body:admin
[root@localhost2 ~]# ls -ld /etc/rsync.password
-rw-------. 1 root root 17 Feb 24 16:26 /etc/rsync.password#600权限
[root@localhost2 ~]# netstat -lntup| grep "rsync"
tcp 0 0 0.0.0.0:873 0.0.0.0:* LISTEN 1497/rsync
tcp 0 0 :::873 :::* LISTEN 1497/rsync
2、主服务器配置
[root@localhost1 ~]# cat /etc/rsync.password
admin
[root@localhost1 ~]# ls -ld /etc/rsync.password
-rw------- 1 root root 6 Feb 24 03:54 /etc/rsync.password
3、安装sersync服务
采用inotify来对文件进行监控,当监控到文件有文件发生改变的时候,就会调用rsync实现触发式实时同步!
安装sersync(注意sersync是工作在rsync的源服务器上,也就是客户端上)
[root@salt-client01 ~]# cd /usr/local/src/
[root@salt-client01 src]# tar -zxvf sersync2.5.4_64bit_binary_stable_final.tar.gz -C /usr/local/
GNU-Linux-x86/
GNU-Linux-x86/sersync2
GNU-Linux-x86/confxml.xml
[root@salt-client01 src]# cd /usr/local/
[root@salt-client01 local]# mv GNU-Linux-x86 sersync
[root@salt-client01 local]# cd sersync/
[root@salt-client01 sersync]# mkdir conf bin log
[root@salt-client01sersync]# mv confxml.xml conf
[root@salt-client01sersync]# mv sersync2 bin/sersync
修改配置文件
***********************************30行开始******************************
<commonParams params="-artuz"/> #-artuz为rsync同步时的参数
<authstart="true" users="rsync的虚拟用户名(rsync_backup)" passwordfile="rsync的密码文件"/>
<userDefinedPort start="true"port="873"/><!-- port=874 -->
<timeout start="false" time="100"/><!--timeout=100 -->
<sshstart="false"/>
************************************第36行***********************************
<failLogpath="自己定义的log文件夹(/usr/local/sersync/log)rsync_fail_log.sh"
timeToExecute="60"/><!--defaultevery 60mins execute once-->
*******************************************************************************
*注:若有多个目录备份可以穿件多个配置文件在启动时的-o参数中添加即可
[root@salt-client01 conf]# diff confxml.xml confxml.xml.bak
24,25c24,25
< <localpath watch="/data/"> #data就是本地需要同步的文件夹到服务器端的目录
< <remote ip="192.168.91.166" name="data"/> #data (server的模块名)是rsync 服务端的文件夹,也就是推送到服务器端的目标文件夹,可以配置多个,
---
> <localpath watch="/opt/tongbu">
> <remote ip="127.0.0.1" name="tongbu1"/>
31c31
< <auth start="true" users="rsync_body" passwordfile="/etc/rsync.password"/> #true 才能生效,rsync_body同步时候虚拟账号,后面是密码文件
---
> <auth start="false" users="root" passwordfile="/etc/rsync.pas"/>
33c33
< <timeout start="true" time="100"/><!-- timeout=100 --> #true 才能生效
---
> <timeout start="false" time="100"/><!-- timeout=100 -->
36c36
< <failLog path="/usr/local/sersync/log/rsync_fail_log.sh" timeToExecute="60"/><!--default every 60mins execute once--> #检测rsync进程判断,没有自动启
---
> <failLog path="/tmp/rsync_fail_log.sh" timeToExecute="60"/><!--default evePry 60mins execute once-->
启动sersync
[root@salt-client01 src]# echo 'export PATH=$PATH:/usr/local/sersync/bin'>>/etc/profile #声明环境变量
[root@salt-client01 src]# source /etc/profile
[root@salt-client01 src]# sersync2 -r -d -o /usr/local/sersync/conf/confxml.xml #启动
set the system param
execute:echo 50000000 > /proc/sys/fs/inotify/max_user_watches
execute:echo 327679 > /proc/sys/fs/inotify/max_queued_events
parse the command param
option: -r rsync all the local files to the remote servers before the sersync work
option: -d run as a daemon
option: -o config xml name: /usr/local/sersync/conf/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost host port: 8008
daemon start,sersync run behind the console
use rsync password-file :
user is rsync_body
passwordfile is /etc/rsync.password
config xml parse success
please set /etc/rsyncd.conf max connections=0 Manually
sersync working thread 12 = 1(primary thread) + 1(fail retry thread) + 10(daemon sub threads)
Max threads numbers is: 22 = 12(Thread pool nums) + 10(Sub threads)
please according your cpu ,use -n param to adjust the cpu rate
------------------------------------------
rsync the directory recursivly to the remote servers once
working please wait...
execute command: cd /data && rsync -artuz -R --delete ./ --timeout=100 rsync_body@192.168.91.166::data --password-file=/etc/rsync.password >/dev/null 2>&1
run the sersync:
watch path is: /data #此时可以看出sersync已经启动成功了
#检测脚本
[root@salt-client01 log]# pwd
/usr/local/sersync/log
[root@salt-client01 log]# vim rsync_fail_log.sh
[root@salt-client01 log]# chmod +x rsync_fail_log.sh
[root@salt-client01 ~]# cat /usr/local/sersync/log/rsync_fail_log.sh
#!/bin/bash
#Purpose: Check sersync whether it is alive
#Author: cai meng zhi
SERSYNC="/usr/local/sersync/bin/sersync2"
CONF_FILE="/usr/local/sersync/conf/confxml.xml"
STATUS=$(ps aux |grep 'sersync2'|grep -v 'grep'|wc -l)
if [ $STATUS -eq 0 ];
then
$SERSYNC -d -r -o $CONF_FILE &
else
exit 0;
fi
脚本写好以后,添加到计划任务中去
*/1 * * * * /bin/bash /usr/local/sersync/log/rsync_fail_log.sh > /dev/null 2>&1
测试同步:
客户端新增文件
[root@salt-client01 data]# cp /etc/passwd 192.168.91.156.passwd
[root@salt-client01 data]# ll
total 4
-rw-r--r-- 1 root root 1928 Nov 10 18:15 192.168.91.156.passwd
-rw-r--r-- 1 root root 0 Nov 10 17:27 3
服务端检测
[root@salt-master data]# cd /data/
[root@salt-master data]# ll
total 8
-rw-r--r-- 1 root root 1928 Nov 10 18:15 192.168.91.156.passwd #说明已经同步过来了
-rw-r--r-- 1 root root 0 Nov 10 17:27 3
drwxr-xr-x 2 root root 4096 Nov 10 17:27 data
客户端测试删除
[root@salt-client01 data]# rm rf 192.168.91.156.passwd
rm: cannot remove `rf': No such file or directory
rm: remove regular file `192.168.91.156.passwd'? y
[root@salt-client01 data]# ll
total 0
-rw-r--r-- 1 root root 0 Nov 10 17:27 3
[root@salt-client01 data]#
服务器端:
[root@salt-master data]# ll
total 4
-rw-r--r-- 1 root root 0 Nov 10 17:27 3 #说明已经删除掉了
drwxr-xr-x 2 root root 4096 Nov 10 17:27 data
4、常见错误汇总
错误一:
@ERROR: auth failed on module xxxxx
rsync: connection unexpectedly closed(90 bytes read so far)
rsync error: error in rsync protocoldata stream (code 12) at io.c(150)
说明:这是因为密码设置错了,无法登入成功,检查一下rsync.pwd,看客服是否匹配。还有服务器端没启动rsync 服务也会出现这种情况。
错误二:
password file must not beother-accessible
continuing without password file
Password:
说明:这是因为rsyncd.pwdrsyncd.sec的权限不对,应该设置为600。如:chmod600 rsyncd.pwd
错误三:
@ERROR: chroot failed
rsync: connection unexpectedly closed(75 bytes read so far)
rsync error: error in rsync protocoldata stream (code 12) at io.c(150)
说明:这是因为你在 rsync.conf中设置的 path 路径不存在,要新建目录才能开启同步
错误四:
rsync: failed to connect to218.107.243.2: No route to host (113)
rsync error: error in socket IO (code10) at clientserver.c(104) [receiver=2.6.9]
说明:防火墙问题导致,这个最好先彻底关闭防火墙,排错的基本法就是这样,无论是S还是C,还有ignore errors选项问题也会导致
错误五:
@ERROR: access denied to www fromunknown (192.168.1.123)
rsync: connection unexpectedly closed(0 bytes received so far) [receiver]
rsync error: error in rsync protocoldata stream (code 12) at io.c(359)
说明:此问题很明显,是配置选项hostallow的问题,初学者喜欢一个允许段做成一个配置,然后模块又是同一个,致使导致
错误六:
rsync error: received SIGINT,SIGTERM, or SIGHUP (code 20) at rsync.c(244) [generator=2.6.9]
rsync error: received SIGUSR1 (code19) at main.c(1182) [receiver=2.6.9]
说明:导致此问题多半是服务端服务没有被正常启动,到服务器上去查查服务是否有启动,然后查看下 /var/run/rsync.pid 文件是否存在,最干脆的方法是杀死已经启动了服务,然后再次启动服务或者让脚本加入系统启动服务级别然后shutdown -r now服务器
错误七:
rsync: read error: Connection resetby peer (104)
rsync error: error in rsync protocoldata stream (code 12) at io.c(604) [sender=2.6.9]
说明:原数据目录里没有数据存在
来源:https://www.cnblogs.com/caicairui/archive/2018/02/26/8472888.html
标签:Linux,sersync,数据同步
0
投稿
猜你喜欢
FTP命令详解
2007-08-17 14:38:00
网站流量虽少 只要选对了广告照样赚钱
2010-05-10 11:40:00
谷歌AdWords五千万激励计划11月30日结束
2009-11-26 11:09:00
详解Linux安装教程
2023-04-27 03:19:34
图王:谈谈赚钱,与落伍的兄弟们一起分享
2008-10-10 12:49:00
SEO 给你的html网页减减肥
2008-10-27 17:17:00
构造公司内部Web、FTP服务器
2007-08-22 11:29:00
通过博客达到宣传网站的效果
2009-04-07 13:00:00
快照不更新首页site不是第一解决实战篇
2009-02-10 17:56:00
基础教程篇:五个方面何防止网站被挂木马
2008-10-28 21:05:00
AdSense官方:创建独特而有价值的内容
2011-11-21 16:59:42
博客获取流量常规10法点评
2009-07-07 21:05:00
详解从Linux源码看Socket(TCP)的bind
2023-11-02 17:54:41
站长赚钱的阶段分析
2007-12-20 12:41:00
淘宝技术发展(个人网站)
2012-03-05 20:09:03
GoDaddy主机有关CGI/FastCGI的问题解答
2010-04-09 12:54:00
阿里学院将在全国打造电子商务人才产业链
2009-10-17 14:34:00
VMware安装centOS镜像全过程
2021-10-24 02:24:22
网站运营模式观察与分析
2009-01-07 12:47:00
Windows Server 2008盛大开幕[下载]
2008-02-28 12:36:00