目标：实现免密同步数据；
1、安装rsync包；
2、手工添加配置文件；
cat /etc/rsyncd.conf
# See rsyncd.conf man page for more options. # configuration example: pid file = /var/run/rsyncd.pid
max connections =
exclude = lost+found/
motd file = /etc/rsyncd.motd
log file = /var/log/rsyncd.log
log format = %t %a %m %f %b
timeout =
port= [rsynsc]
uid = root
gid = root
use chroot = yes
read only = yes
path = /xxxxxxxx/path/
comment = welcome
list=yes
#auth users = test
#secrets file = /etc/rsyncd.secrets
开启rsync服务
/usr/bin/rsync --daemon --config=/etc/rsyncd.conf
查看rsync服务是否正常运行
[root@localhost ]# netstat -an | grep
tcp 0.0.0.0: 0.0.0.0:* LISTEN
tcp6 ::: :::* LISTEN
unix [ ] STREAM CONNECTED /run/systemd/journal/stdout
同步方法：
rsync -avzP rsync://rsync_server_ip/path/ localpath
note：
查看rsync服务器下的目录信息
rsync -v rsync://rsync_server_ip/path/