Linux系统文件同步rysnc+inotify+unison实现

1.用rsync软件做文件定时备份，但不是做到实时备份，所以单独使用效果不是很好.

    服务器A:

[root@centos ~]# ifconfig  eth0       -- 查看IP地址 
eth0      Link encap:Ethernet  HWaddr 08:00:27:56:AA:AA 
inet addr:2.2.2.135  Bcast:2.255.255.255  Mask:255.0.0.0 
inet6 addr: fe80::a00:27ff:fe56:aaaa/64 Scope:Link 
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1 
RX packets:13072 errors:0 dropped:0 overruns:0 frame:0 
TX packets:328 errors:0 dropped:0 overruns:0 carrier:0 
collisions:0 txqueuelen:1000 
RX bytes:1009592 (985.9 KiB)  TX bytes:31733 (30.9 KiB) 
[root@centos ~]# vim /etc/hosts    --添加以下行 
2.2.2.145 centos1 
2.2.2.135 centos 
[root@centos ~]# yum install rsync    --安装rsync软件，记住两台电脑必须全部安装 
Loaded plugins: fastestmirror 
Loading mirror speeds from cached hostfile 
Setting up Install Process 
Resolving Dependencies 
--> Running transaction check 
---> Package rsync.i686 0:3.0.6-9.el6 will be installed 
--> Finished Dependency Resolution 
Dependencies Resolved 
============================================================================================================================================= 
Package                        Arch                          Version                                Repository                         Size 
============================================================================================================================================= 
Installing: 
rsync                          i686                          3.0.6-9.el6                            c6-media                          329 k 
Transaction Summary 
============================================================================================================================================= 
Install       1 Package(s) 
Total download size: 329 k 
Installed size: 672 k 
Is this ok [y/N]: y 
Downloading Packages: 
Running rpm_check_debug 
Running Transaction Test 
Transaction Test Succeeded 
Running Transaction 
Installing : rsync-3.0.6-9.el6.i686                                                                                                    1/1
Verifying  : rsync-3.0.6-9.el6.i686                                                                                                    1/1
Installed: 
rsync.i686 0:3.0.6-9.el6 
Complete! 
[root@centos ~]#

  服务器B:

 

[root@centos1 ~]$ ifconfig  eth0    --查看IP地址 
eth0      Link encap:Ethernet  HWaddr 08:00:27:56:AA:AA 
inet addr:2.2.2.145  Bcast:2.2.2.255  Mask:255.255.255.0
inet6 addr: fe80::a00:27ff:fe56:aaaa/64 Scope:Link 
UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
RX packets:14005 errors:0 dropped:0 overruns:0 frame:0
TX packets:503 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1081748 (1.0 MiB)  TX bytes:46832 (45.7 KiB) 
[root@centos1 ~]$ vim /etc/hosts    --添加以下两行 
2.2.2.135  centos 
2.2.2.145   centos1 
[root@centos1 ~]$ ping 2.2.2.135 -c 1      --是否相通 
PING 2.2.2.135 (2.2.2.135) 56(84) bytes of data. 
64 bytes from 2.2.2.135: icmp_seq=1 ttl=64 time=0.438 ms 
--- 2.2.2.135 ping statistics --- 
1 packets transmitted, 1 received, 0% packet loss, time 0ms 
rtt min/avg/max/mdev = 0.438/0.438/0.438/0.000 ms 
[root@centos ~]# yum install rsync 
PING 2.2.2.135 (2.2.2.135) 56(84) bytes of data. 
64 bytes from 2.2.2.135: icmp_seq=1 ttl=64 time=0.438 ms 
--- 2.2.2.135 ping statistics --- 
1 packets transmitted, 1 received, 0% packet loss, time 0ms 
rtt min/avg/max/mdev = 0.438/0.438/0.438/0.000 ms 
[root@centos ~]# yum install rsync     --安装软件 
Loaded plugins: fastestmirror 
Loading mirror speeds from cached hostfile 
Setting up Install Process 
Resolving Dependencies 
--> Running transaction check 
---> Package rsync.i686 0:3.0.6-9.el6 will be installed 
--> Finished Dependency Resolution 
Dependencies Resolved 
============================================================================================================================================= 
Package                        Arch                          Version                                Repository                         Size 
============================================================================================================================================= 
Installing: 
rsync                          i686                          3.0.6-9.el6                            c6-media                          329 k 
Transaction Summary 
============================================================================================================================================= 
Install       1 Package(s) 
Total download size: 329 k 
Installed size: 672 k 
Is this ok [y/N]: y 
Downloading Packages: 
Running rpm_check_debug 
Running Transaction Test 
Transaction Test Succeeded 
Running Transaction 
Installing : rsync-3.0.6-9.el6.i686                                                                                                    1/1
Verifying  : rsync-3.0.6-9.el6.i686                                                                                                    1/1
Installed: 
rsync.i686 0:3.0.6-9.el6 
Complete! 
[root@centos1 ~]$ rsync  2.2.2.135:/home/*.txt /home/    --远程复制文件,-r是目录 
root@2.2.2.135's password: 
[root@centos1 ~]$ ll /home/*.txt        --复制成功 
-rw-r--r-- 1 root root 36 Dec 16 14:40 /home/1.txt 
-rw-r--r-- 1 root root 12 Dec 16 14:34 /home/2.txt 
-rw-r--r-- 1 root root  0 Dec 16 15:48 /home/3.txt 
[root@centos1 ~]$ crontab  -e 
* 24 * * *  /usr/bin/rsync 2.2.2.135:/home/*.txt /home/    --每天24点备份

 2.rsync+inotify做文件实时备份工作(inotify文件系统监控)

      服务器A: 备份文件 

[root@centos1 samba]$ tar xvf inotify-tools-3.14.tar.gz 
[root@centos1 samba]$ cd inotify-tools-3.14 
[root@centos1 inotify-tools-3.14]$ ./configure  --prefix=/usr/local/inotify && make && make install    --安装软件 
[root@centos inotify-tools-3.14]# cd /usr/local/inotify/ 
[root@centos inotify]# ll 
total 16 
drwxr-xr-x. 2 root root 4096 Dec 16 16:08 bin 
drwxr-xr-x. 3 root root 4096 Dec 16 16:08 include 
drwxr-xr-x. 2 root root 4096 Dec 16 16:08 lib 
drwxr-xr-x. 4 root root 4096 Dec 16 16:08 share 
[root@centos inotify]# cd bin/ 
[root@centos bin]# ll 
total 72 
-rwxr-xr-x. 1 root root 36447 Dec 16 16:08 inotifywait 
-rwxr-xr-x. 1 root root 34961 Dec 16 16:08 inotifywatch 
[root@centos bin]# vim inotifywait 
[root@centos bin]# vim start.sh 
#!/bin/sh 
SRC=/home/* 
DST=root@2.2.2.145:/home
/usr/local/inotify/bin/inotifywait -mrq -e modify,delete,create,attrib ${SRC} | while read status 
do
/usr/bin/rsync  -ahqzt  --delete  $SRC $DST 
echo "`date +'%Y-%m-%d %H:%M:%S'`  ${status} has rsynced" >>rsync.log 
done

    服务器B：用于读写文件

3.unison文件双向同步