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第一次同步时 rsync 会复制全部内容,但在下一次只传输修改过的文件。
服务安装
[root@ygy130 ~]# yum install xinetd
[root@ygy130 ~]# vim /etc/xinetd.d/rsync
启动服务
[root@ygy130 ~]# /etc/init.d/xinetd restart
Stopping xinetd: [ OK ]
Starting xinetd: [ OK ]
[root@ygy130 ~]# netstat -antup | grep xinetd
tcp 0 0 :::873 :::* LISTEN 9743/xinetd
chkconfig xinetd on 设置开机自启动
使用系统用户进行同步: 在我的130机器上创建一个用户,把130服务器上的数据,复制到这台机器上
useradd rget1 创建用户
echo rget1:123456 | chpasswd 创建密码
setfacl -R -m user:rget1:rwx /var/www/html/
setfacl -R -m default:rget1:rwx /var/www/html/
[root@yuguangyuan ~]# mkdir -p /web-back
[root@yuguangyuan ~]# echo "0 3 * * * /usr/bin/rsync -avz --delete -e ‘ssh -p 222 ‘ rget1@192.168.1.130:/var/www/html/ /web-back/ ">> /var/spool/cron/root
每天3点备份一下数据。
前提是要做密钥认证。
[root@yuguangyuan ~]# ssh-keygen
[root@yuguangyuan ~]# ssh-copy-id -i /root/.ssh/id_rsa.pub "-p 222 rget1@192.168.1.130"
不使用系统用户进行备份。我这里只能使用ssh的22端口号,自定义的端口号,备份没有成功。
[root@ygy130 ~]# vim /etc/rsyncd.conf 文件不存在,需要自己创建
uid = nobody
gid = nobody
address = 192.168.1.130
port = 873
hosts allow = 192.168.1.131
use chroot = yes
max connections = 5
pid file = /var/run/rsyncd.pid
lock file = /var/run/rsync.lock
log file = /var/log/rsyncd.log
motd file = /etc/rsyncd.motd
[wwwroot]
path=/var/www/html
comment = dd
read only = yes
list = yes
auth users = rsyncuser
secrets file = /etc/rsync.passwd
保存,退出
echo "Welcome to Backup Server" > /etc/rsyncd.motd 写提示信息
[root@ygy130 ~]# echo rsyncuser:123 > /etc/rsync.passwd 密码
chmod 600 /etc/rsync.passwd 修改权限
/etc/init.d/xinetd restart 重启
131机器输入:下面命令进行备份
[root@yuguangyuan ~]# rsync -avz --progress --delete rsyncuser@192.168.1.130::wwwroot /web-back/
Welcome to Backup Server
Password:
receiving incremental file list
./
aaa.txt
5 100% 4.88kB/s 0:00:00 (xfer#1, to-check=0/4)
sent 84 bytes received 210 bytes 117.60 bytes/sec
total size is 5 speedup is 0.02
[root@yuguangyuan ~]#
可以加密码文件,不要手动输入密码,手动创建一个passfile文件,文件内容为密码:123
--password-file=/home/yy/passfile
[root@yuguangyuan ~]# rsync -avz --progress --delete rsyncuser@192.168.1.130::wwwroot /web-back/ --password-file=/home/yy/passfile
Welcome to Backup Server
receiving incremental file list
./
3.txt
0 100% 0.00kB/s 0:00:00 (xfer#1, to-check=0/3)
sent 84 bytes received 187 bytes 542.00 bytes/sec
total size is 0 speedup is 0.00
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原文地址:http://www.cnblogs.com/yuguangyuan/p/5902060.html