使用scp在服务器之间实现自动备份

背景：

（1）工作时的代码都在放在服务器上

（2）服务器不稳定，随时可能当机

 

所以决定写个shell脚本，自动（每天凌晨）将client服务器上指定的文件夹打包，然后复制到另外一台服务器server上的指定目录下。

话不多说，上代码：

 1 #/bin/sh

 2 

 3 #usage

 4 #(1)modify line 10 to line 14 of this script, provide necesary information

 5 #(2)./backup.11 install

 6 #(3)just enjoy it!

 7 

 8 #information you must provide

 9 #local directory that should be backup and uploaded

10 local_files=("/home/raozhengfeng/work/DEV-ICG-z.rao/ADV_PRJ/SCRC_SL/ICG_Prj/DEV/z.rao/MIS" "/home/raozhengfeng/work/NB-projects")

11 remote_host=109.119.20.11

12 remote_user=raozhengfeng

13 #directory on remote server to store bakcup files, which MUST be existed

14 remote_directory=/home/raozhengfeng/233/

15 

16 install()

17 {

18         add_cron

19         prepare_ssh

20 }

21 

22 #generate ssh-key and upload to remote host, so we can use 'scp' util without password

23 prepare_ssh()

24 {

25         if [ -e "~/.ssh/id_rsa.pub" ]; then

26                 echo "XXXXXXXXXXXXXXXXXXX"

27         else

28                 ssh-keygen -b 1024 -t rsa -N "" -f ~/.ssh/id_rsa

29         fi

30 

31         scp ~/.ssh/id_rsa.pub $remote_user@$remote_host:/home/$remote_user/.ssh/authorized_keys

32 }

33 

34 #add this script to cron

35 add_cron()

36 {

37         echo "1 10 * * * "`pwd`"/$0" > $0.cron

38         crontab $0.cron

39 }

40 

41 #tar and upload local files to remote host

42 backup()

43 {

44         for _f in ${local_files[@]}

45         do

46                 echo $_f

47                 #if necessary, we can name the archived file with date

48                 tar czf $_f.tar.gz $_f

49                 scp $_f.tar.gz $remote_user@$remote_host:$remote_directory

50         done

51 }

52 

53 if [ $# -gt 0 ]; then

54         if [ $1 = "install" ]; then

55                 echo "Installing..."

56                 install

57                 exit

58         fi

59 fi

60 

61 backup

 

使用方法见代码注释。