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1.服务介绍

Sersync是一款开源的实时文件同步工具，主要用于服务器同步、web镜像等功能。可以保证数据的连续性, 减少人力维护成本,解决nfs单点故障

2.服务器规划

角色	IP1	IP2	主机名	安装软件
backup	10.0.0.41/24	172.16.1.41/24	backup	rsync
NFSserver	10.0.0.31/24	172.16.1.31/24	nfs	sersync

3.配置

3.1 nfs端操作

3.1.1 安装软件

[root@nfs01 ~]# yum install -y inotify-tools rsync
[root@nfs01 sersync]# wget https://raw.githubusercontent.com/wsgzao/sersync/master/sersync2.5.4_64bit_binary_stable_final.tar.gz

 3.1.2 解压软件

[root@nfs01 sersync]# ll
total 712
-rw-r--r-- 1 root root 727290 Jun 24 01:22 sersync2.5.4_64bit_binary_stable_final.tar.gz
[root@nfs01 sersync]# tar -xf sersync2.5.4_64bit_binary_stable_final.tar.gz 
[root@nfs01 sersync]# ll
total 712
drwxr-xr-x 2 root root     41 Oct 26  2011 GNU-Linux-x86
-rw-r--r-- 1 root root 727290 Jun 24 01:22 sersync2.5.4_64bit_binary_stable_final.tar.gz
[root@nfs01 sersync]# mv GNU-Linux-x86/ sersync
[root@nfs01 sersync]# ll
total 712
drwxr-xr-x 2 root root     41 Oct 26  2011 sersync
-rw-r--r-- 1 root root 727290 Jun 24 01:22 sersync2.5.4_64bit_binary_stable_final.tar.gz

3.1.3 修改配置文件

[root@nfs01 sersync]# vim confxml.xml
[root@nfs01 sersync]# grep -E "createFile|localpath watch|remote ip|commonParams params|auth start|users" confxml.xml<createFile start="true"/><localpath watch="/data"><remote ip="172.16.1.41" name="data"/><commonParams params="-avz"/><auth start="true" users="rsync_backup" passwordfile="/etc/rsync.pas"/>

3.1.4 创建密码文件并授权

[root@nfs01 sersync]# echo 123456 > /etc/rsync.pas
[root@nfs01 sersync]# chmod 600 /etc/rsync.pas
[root@nfs01 sersync]# ll -R /etc/rsync.pas 
-rw------- 1 root root 7 Jun 24 22:01 /etc/rsync.pas

3.1.5 启动sersync守护进程

[root@nfs01 sersync]# /sersync/sersync/sersync2 -dro /sersync/sersync/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：  /sersync/sersync/confxml.xml
daemon thread num: 10
parse xml config file
host ip : localhost	host port: 8008
will ignore the inotify createFile event 
daemon start，sersync run behind the console 
use rsync password-file :
user is	rsync_backup
passwordfile is 	/etc/rsync.pas
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 -avz -R --delete ./ rsync_backup@172.16.1.41::data --password-file=/etc/rsync.pas >/dev/null 2>&1 
run the sersync: 
watch path is: /data

3.2 备份端

3.2.1 安装软件

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

3.2.2 修改配置文件

[root@backup ~]# vim /etc/rsyncd.conf 
[root@backup ~]# cat /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
##################################### 
[backup]   
path = /backup
[data]
path = /data

3.2.3 建立对应密码文件并授权

[root@backup ~]# echo "rsync_backup:123456" > /etc/rsync.passwd
[root@backup ~]# chmod 600 /etc/rsync.passwd

3.2.4 创建对应同步目录并授权

[root@backup ~]# mkdir /data
[root@backup ~]# chown rsync.rsync /data

3.2.5 启动rsync

[root@backup ~]# systemctl start rsyncd
[root@backup ~]# systemctl enable rsyncd

4.测试

4.1 新建文件测试

[root@nfs01 sersync]# touch /data/3.txt
[root@nfs01 sersync]# ll /data
total 0
-rw-r--r-- 1 root      root      0 Jun 24 22:26 3.txt[root@backup data]# ll
total 0
-rw-r--r-- 1 rsync rsync 0 Jun 24  2025 3.txt

4.2 删除文件测试

[root@nfs01 sersync]# touch /data/rm-test.txt
[root@nfs01 sersync]# ll /data
total 0
-rw-r--r-- 1 root      root      0 Jun 24 22:26 3.txt
-rw-r--r-- 1 root      root      0 Jun 24 22:28 rm-test.txt[root@backup data]# ll
total 0
-rw-r--r-- 1 rsync rsync 0 Jun 24  2025 3.txt
-rw-r--r-- 1 rsync rsync 0 Jun 24  2025 rm-test.txt[root@nfs01 sersync]# rm -f /data/rm-test.txt 
[root@nfs01 sersync]# ll /data
total 0
-rw-r--r-- 1 root      root      0 Jun 24 22:26 3.txt[root@backup data]# ll
total 0
-rw-r--r-- 1 rsync rsync 0 Jun 24  2025 3.txt
[root@backup data]# 

实时同步服务就介绍到这里啦~