环境：centos7.4     data1:172.20.10.8       data2:172.20.10.9

• rsync配置

1、安装rsync服务

[root@data1 ~]# yum -y install xinetd rsync

2、修改配置

[root@data1 ~]# vim /etc/rsyncd.conf

uid = root 
  gid = root 
  address = 172.20.10.8 
  port = 873 
  host allow = 172.20.10.0/24
  use chroot = yes 
  max connections = 6 
  pid file = /var/run/rsyncd.pid 
  lock file =/var/run/rsync.lock 
  log file =/var/log/rsyncd.log 

[backup] 
  path = /backup 
  read only = false 
  list = yes 
  auth users = backupuser 
  secrets file = /etc/rsync.passwd 

3、创建密钥文件

[root@data1 ~]# echo "backupuser:123456" >/etc/rsync.passwd
[root@data1 ~]# chmod 600 /etc/rsync.passwd   #必须修改成700或600,否则验证时会报错
[root@data2 ~]# echo "123456" >/etc/rsync.passwd
[root@data2 ~]# chmod 600 /etc/rsync.passwd

4、启动服务

[root@data1 ~]# systemctl start xinetd && systemctl enable xinetd 
[root@data1 ~]# rsync --daemon --config=/etc/rsyncd.conf
[root@data1 ~]# echo "rsync --daemon --config=/etc/rsyncd.conf " >> /etc/rc.local

• sersync配置

1、下载serysnc

 [root@data2 ~]# wget https://raw.githubusercontent.com/wsgzao/sersync/master/sersync2.5.4_64bit_binary_stable_final.tar.gz

2、解压

[root@data2 ~]# tar xf sersync2.5.4_64bit_binary_stable_final.tar.gz

[root@data2 ~]# mkdir /usr/local/sersync

[root@data2 ~]# mv GNU-Linux-x86/* /usr/local/sersync/

3、配置

[root@data2 ~]# cp /usr/local/sersync/confxml.xml /usr/local/sersync/confxml.xml.bak

[root@data2 ~]# vim /usr/local/sersync/confxml.xml

#修改24--28行

<sersync>
  <localpath watch="/opt/">                                       #要同步的目录
  <remote ip="172.20.10.8" name="backup"/>      #backup为共享模块名
  </localpath>

#修改31--34行，认证部分【rsync密码认证】

<rsync>
  <commonParams params="-artuz"/>
  <auth start="true" users="backupuser" passwordfile="/etc/rsync.passwd"/>  
  <userDefinedPort start="false" port="874"/><!-- port=874 -->
  <timeout start="false" time="100"/><!-- timeout=100 -->
  <ssh start="false"/>
  </rsync>

4、开启sersync守护进程

[root@data2 ~]# /usr/local/sersync/sersync2 -d -r -o /usr/local/sersync/confxml.xml

[root@data2 ~]# echo "/usr/local/sersync/sersync2 -d -r -o /usr/local/sersync/confxml.xml"  >>/etc/rc.local

• 测试

[root@data1 ~]# touch /opt/a.txt

[root@data1 ~]# ls /opt

a.txt

[root@data2 ~]# ls /backup

a.txt

已实时同步，说明已完成