环境：
vmwara两台linux虚拟机
系统：SUSE linux 11 SP3
A机：172.27.34.210 B机：172.27.34.211
主机配置这里略过，IP配好基本ok
第一步：SSH配置
AB 两台主机开启SSHD服务，一般默认安装了，开启服务，并且禁用防火墙就行。
第二步：rsync服务
开启rsync服务 在 vi /etc/xinetd.d/rsync中 将 “disable=yes”改为“disable=no”
chkconfig rsync检验
第三步：运行rsync脚本
#!/bin/bash
backupf='/home/qwt/bckup.txt'
echo "Shell Script Backup Your Files / Directories Using rsync"
while [ x$desthost = "x" ]; do
read -p "Destination backup Server : " desthost
done
while [ x$destpath = "x" ]; do
read -p "Destination Folder : " destpath
done
for line in `cat $backupf`
do
echo "Copying $line ... "
rsync -ar "$line" "$desthost":"$destpath"
echo "DONE"
done
其中bckup.txt中包含需要同步的文件以及路径如：
/home/qwt/1.txt
/home/qwt/2.sh
/home/qwt/docs
这里会报一个错误：Copying /home/qwt/1.txt ... The authenticity of host '172.27.34.211 (172.27.34.211)' can't be established. ECDSA key fingerprint is 40:c2:34:00:0a:1e:51:c1:57:85:cb:01:7e:2d:2e:f8 [MD5]. Are you sure you want to continue connecting (yes/no)?
查阅网上资料，在绝对信任的主机之间可以采用以下方法屏蔽该错误提示
修改/etc/ssh/ssh_config文件
在最后加上 StrictHostKeyChecking no UserKnownHostsFile /dev/null
再次运行 bash rsync.sh
先提示输入目的IP：
再提示输入目的路径：
DONE
Shell Script Backup Your Files / Directories Using rsync Destination backup Server : 172.27.34.211 Destination Folder : /home/qwt Copying /home/qwt/1.txt ... Warning: Permanently added '172.27.34.211' (ECDSA) to the list of known hosts. Password: DONE Copying /home/qwt/2.sh ... Warning: Permanently added '172.27.34.211' (ECDSA) to the list of known hosts. Password: DONE Copying /home/qwt/docs ... Warning: Permanently added '172.27.34.211' (ECDSA) to the list of known hosts. Password: DONE
这里一共同步了三个文件，所以输入了三次密码。。。
