1 安装
[root@server1 soft]# wget http://rsync.samba.org/ftp/rsync/rsync-3.0.9.tar.gz
[root@server1 soft]# tar zxvf rsync-3.0.9.tar.gz
[root@server1 soft]# cd rsync-3.0.9
[root@server1 rsync-3.0.9]# ./configure
[root@server1 rsync-3.0.9]# make && make install
 
[root@server soft]# wget http://github.com/downloads/rvoicilas/inotify-tools/inotify-tools-3.14.tar.gz
[root@server1 soft]# tar zxvf inotify-tools-3.14.tar.gz
[root@server1 soft]# cd inotify-tools-3.14
[root@server1 inotify-tools-3.14]# ./configure
[root@server1 inotify-tools-3.14]# make && make install
 
[root@server1 ~]# yum -y install rsync
[root@server2 ~]# yum -y install rsync
 
2. 配置 ssh key 信任
server1
[root@server1 ~]# useradd -m rsync
[root@server1 ~]# passwd rsync
 
server2
[root@server2 ~]# useradd -m rsync
[root@server2 ~]# passwd rsync
 
server1 （创建 key 并配置 server2 的信任）
[root@server1 ~]# su - rsync
[rsync@server1 ~]$ ssh-keygen -t rsa （所有选项回车，使用默认设置）
[rsync@server1 ~]$ scp ~/.ssh/id_rsa.pub [email protected]:/home/rsync/
 
server2 （将公钥添加到authorized_keys文件中）
[root@server2 ~]# su - rsync
[rsync@server2 ~]$ mkdir .ssh
[rsync@server2 ~]$ chmod 700 .ssh/
[rsync@server2 ~]$ mv ~/id_rsa.pub ~/.ssh/authorized_keys
server2 （创建key并配置对server1的信任）
[rsync@server2 ~]$ ssh-keygen -t rsa
[rsync@server2 ~]$ scp ~/.ssh/id_rsa.pub [email protected]:/home/rsync/
 
server1 （将公钥添加到authorized_keys文件中）
[rsync@server1 ~]$ mv ~/id_rsa.pub ~/.ssh/authorized_keys
 
分别重启 sshd 服务
[root@server1 ~]# service sshd restart
[root@server2 ~]# service sshd restart 
 
3. 添加同步脚本
[root@server1 ~]# vi inotify_rsync.sh
#!/bin/sh
SRC=/home/rsync/test/
[email protected]:/home/rsync/test
INWT=/usr/local/bin/inotifywait
RSYNC=/usr/local/bin/rsync
$INWT -mrq -e create,move,delete,modify $SRC | while read D E F;do
            rsync -aHqzt --delete $SRC $DST
        done
[root@server1 ~]# chmod +x inotify_rsync.sh
[root@server1 ~]# cp inotify_rsync.sh /home/rsync/
[root@server1 ~]# su - rsync
[rsync@server1 ~]$ ./inotify_rsync.sh &
[1] 15305
[rsync@server1 ~]$ Couldn't watch /home/rsync/test/: No such file or directory
 
[1]+  Done                    ./inotify_rsync.sh
[rsync@server1 ~]$ mkdir test
[rsync@server2 ~]$ mkdir test
测试
[rsync@server1 ~]$ cd test/
[rsync@server1 test]$ touch yhl.txt
[rsync@server1 test]$ Address 172.16.19.89 maps to bogon, but this does not map back to the address - POSSIBLE BREAK-IN ATTEMPT!
 
 
验证
[rsync@server2 ~]$ cd test/
[rsync@server2 test]$ ls