centos 下rsync文件同步

rsyc是什么?(百度百科介绍)

rsync是linux系统下的数据镜像备份工具。使用快速增量备份工具Remote
Sync可以远程同步，支持本地复制，或者与其他SSH、rsync主机同步。

如何安装

1.服务器端（接收文件）

rsyncd.conf参数文件配置

# /etc/rsyncd: configuration file for rsync daemon mode

# See rsyncd.conf man page for more options.

# configuration example:

# uid = nobody
# gid = nobody
# use chroot = yes
# max connections = 4
# pid file = /var/run/rsyncd.pid
# exclude = lost+found/
# transfer logging = yes
# timeout = 900
# ignore nonreadable = yes
# dont compress   = *.gz *.tgz *.zip *.z *.Z *.rpm *.deb *.bz2

# [ftp]
#        path = /home/ftp
#        comment = ftp export area

uid = www                                
gid = www                               
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    
ignore errors                       
read only = false                  
list = false                   
hosts allow = 88.88.88.0/24   
auth users = rsync_backup                 
secrets file = /etc/rsync.pass           
fake super = yes
[data]                                 
comment = "myrsync directory"
path = /data       

useradd www -M -s /sbin/nologin
mkdir /data
chown -R www.www /data
echo 'rsync_backup:123456' >>/etc/rsync.pass
chmod 600 /etc/rsync.pass
rsync --daemon
netstat -lntp|grep rsync
echo '/usr/bin/rsync --daemon' >>/etc/rc.local
systemctl stop firewalld
chmod 600 /etc/rsync.pass
ll /data/

2.客户端（发送文件）

echo '123456' >>/etc/rsync.pass
chmod 600 /etc/rsync.pass
mkdir /data
systemctl stop firewalld
chmod 777 -R /data/
touch /data/2.txt
rsync -avz --delete /data/ [email protected]::data --password-file=/etc/rsync.pass

3.客户端目录实时同步到服务器端(通过定时任务实现)

vi /usr/bin/rsync.sh

#!/bin/bash
for i in $(seq 1 60)
do
  rsync -avz --delete /data/ [email protected]::data --password-file=/etc/rsync.pass
  sleep 1

done

chmod +x /usr/bin/rsync.sh
crontab -e

* * * * * sh /usr/bin/rsync.sh >>/var/log/$(date +%y%m%d).txt

service crond restart

报错

• No route to host
  关闭服务器端防火墙
• auth failed on module data
  可能是参数文件/etc/rsyncd.conf内文件注释问题，去掉注释