特殊:Badtitle/NS100:BackupPC

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序言

BackupPC是一个免费的备份软件与基于Web的前端。可跨平台运行于任何Linux ， Solaris操作系统或Unix服务器。没有客户端不是必然的，作为服务器本身就是一个客户端的一些协议，是处理其他服务本地的客户端的操作系统。

备份方法

从客户端备份数据的三种方法如下： SMB （服务器消息块） tar （磁带存档） rsync （文件传输程序的Unix系统）

	WinXX	Linux/Unix/MacOSX
smb	*
rsync	* 1.	*
tar		*

1. 1 rsync / cygwin软件需要安装在客户端 备份windows系统最简单的方法就是“SMB”协议。详见BackupPC手册

配置

要配置BackupPC有3个选择：

  Web浏览器（最简单）
  文本编辑器（超级用户） 
  两者结合（平衡） 

注： BackupPC用户手册是最重要的“文本”的基础。

BackupPC的配置文件

BackupPC的配置文件中的` / etc / backuppc directory` 。最重要的两个文件是` / etc / backuppc / config.pl `和` / etc / backuppc /hosts` 。您现在应该打开它们并且熟悉所有的配置选项。这两个文件有大量注释和评论，所以当你看到他们你也就应该明白他们能坐什么了。例如，在` / etc / backuppc / config.pl 你可以自定义BackupPC如何以及何时备份，完全备份或者是增量备份，有多少日志文件等。

nano -w /etc/backuppc/config.pl

nano -w  /etc/backuppc/hosts

安装

sudo apt-get install backuppc

添加主机

要给 BackupPC添加客户端 ，我们必须将其添加到 `/etc/backuppc/hosts`.该文件格式如下:

host        dhcp    user      moreUsers
hostname1     0     user1     anotheruser,athirduser
hostname2     1     user2     stillanotheruser

第一栏包含了主机名/ NetBIOS名称的客户端（例如` hostname1 ` ） ，第二栏是否客户端配置通过DHCP ，第三栏中会包含的用户可以登录到BackupPC web界面来管理备份客户端，第四栏（可选）包含更多的用户可以这样做。

Browse Network

smbtree is a smb browser program in text mode. It is similar to the "Network Neighborhood" found on Windows computers. It prints a tree with all the known domains, the servers in those domains and the shares on the servers.

smbtree -b
Password:

Don't enter a password, hit enter

WORKGROUP
        \\BACKUP                        backup server (Samba, Ubuntu)
                \\BACKUP\IPC$                   IPC Service (backup server (Samba, Ubuntu))
                \\BACKUP\print$                 Printer Drivers
        \\AMD6000
cli_rpc_pipe_open: cli_nt_create failed on pipe \srvsvc to machine AMD6000.  Error was NT_STATUS_ACCESS_DENIED

Your network will differ, BACKUP is the name of our BackupPC server, AMD6000 is the name of our Windows Vista PC we want to back up. Although `AMD6000` is configured through DHCP, dhcp should only be set to 1 if the following tests fail:

nmblookup AMD6000

If the test is successful, it should display `AMD6000` current IP address:

querying amd6000 on 192.168.0.255
192.168.0.50 amd6000<00>

Now that you know `AMD6000` current IP address, run the same test in the other direction:

nmblookup -A 192.168.0.50

If successful, the output should look like this:

Looking up status of 192.168.0.50
        AMD6000         <00> -         B <ACTIVE>
        WORKGROUP       <00> - <GROUP> B <ACTIVE>
        AMD6000         <20> -         B <ACTIVE>
        WORKGROUP       <1e> - <GROUP> B <ACTIVE>

        MAC Address = 00-1A-92-B0-4C-63

Both tests were successful, so we can set `dhcp` to 0, and we put `AMD6000 0 user` into `/etc/backuppc/hosts` and comment out the `localhost` line:

nano -w /etc/backuppc/hosts

[...]
AMD6000      0       user
#localhost   0       backuppc

If the tests had not been successful, we would have put `AMD6000 1 user` into `/etc/backuppc/hosts` instead, and in addition to that we would have had to change the variable `$Conf{DHCPAddressRanges}` in `/etc/backuppc/config.pl`. We have added the user user to the hosts file. That's the system user whom BackupPC will send email reports regarding `AMD6000`, so we should create that user on the BackupPC server now:

useradd -m user
passwd user

In addition to that we must create a password for user for the BackupPC web interface:

htpasswd /etc/backuppc/htpasswd user

(If you like you can now open a second browser and log in as `user` on `http://192.168.0.51/backuppc/`.)

Backup Linux Client (rsync)

Now we must edit /etc/backuppc/config.pl. The backup method for AMD6000 will be rsync, so we set $Conf{XferMethod} = 'rsync';. AMD6000 has just one (big) partition (/), so we set $Conf{RsyncShareName} == '/';. If you have multiple partitions to backup, you'd specify something like $Conf{RsyncShareName} == ['/', '/var', '/data', '/boot']; instead. rsync will be tunneled through SSH (port 22). SSH needs to know the hostname or IP address of the client. Unless you have a DNS server that resolves AMD6000 to its IP address, SSH will not be able to resolve the name AMD6000. Therefore we replace $host with $hostIP in $Conf{RsyncClientCmd} and $Conf{RsyncClientRestoreCmd}.

nano -w /etc/backuppc/config.pl

[...]
$Conf{XferMethod} = 'rsync';

$Conf{RsyncClientPath} = '/usr/bin/rsync';
$Conf{RsyncClientCmd} = '$sshPath -q -x -l root $hostIP $rsyncPath $argList+';
$Conf{RsyncClientRestoreCmd} = '$sshPath -q -x -l root $hostIP $rsyncPath $argList+';
$Conf{RsyncShareName} = '/';
#$Conf{RsyncShareName} = ['/', '/var', '/data', '/boot'];
[...]

(You might wonder now how we can specify options for multiple clients because the options for notebook will be different from those for AMD6000. It works like this: the options in /etc/backuppc/config.pl are global values that are valid for all clients unless they have their onw configuration file in /etc/backuppc, named after their hostname. So for notebook we will create /etc/backuppc/notebook.pl, and it will contain only the values that are different from the ones in /etc/backuppc/config.pl. In fact, we could have created /etc/backuppc/falko-desktop.pl for falko-desktop instead of modifying /etc/backuppc/config.pl.)

Enable settings

Next restart BackupPC:

/etc/init.d/backuppc restart

Backup Windows Client (smb)

To make backups of Windows systems using smb, we must share the folder that we want to back up. In this case I want to backup the whole C: drive, so I right-click on it in the Windows Explorer and go to Sharing. As share name I specify C. Next, on server1.example.com, I add a line for notebook to /etc/backuppc/hosts (I do this as root). In this case I use user again as the user. If you use a different username than before, make sure you create it on the system and for the BackupPC web interface, as shown in chapter 5.

vi /etc/backuppc/hosts

[...]
AMD6000      0       user
notebook     0       user
#localhost   0       backuppc

Then create the file /etc/backuppc/notebook.pl and add all options that are different from the ones in /etc/backuppc/config.pl. In this case we add $Conf{XferMethod} == 'smb';. Our share name is C, so we put $Conf{SmbShareName} == 'C'; into it as well as the username and password for the Windows share:

nano -w /etc/backuppc/notebook.pl

$Conf{SmbShareName} = 'C';
$Conf{SmbShareUserName} = 'username';
$Conf{SmbSharePasswd} = 'password';
$Conf{XferMethod} = 'smb';

Enable Settings

Then restart BackupPC:

/etc/init.d/backuppc restart

Then reload the BackupPC web interface again. You should now find notebook in the list of clients: You can start the first backup of notebook manually or wait until BackupPC starts it:

Backup Linux Clients (tar)

BackupPC is a great backup program for an Ubuntu server. However, backing up Ubuntu client machines doesn’t work “out of the box” due to Ubuntu’s lack of a root account. The following describes how to make BackupPC work with Ubuntu's sudo implementation. By adding sudo to the TAR commands in /etc/backuppc/config.pl and adding backuppc to the sudoers list, you’re able to perform both backups and restores directly from the web-based interface.

Modify /etc/backuppc/config.pl

• Run “sudo gedit /etc/backuppc/config.pl”
• Add sudo to the TAR Client and ClientRestore commands
• Change $Conf{TarClientCmd} and $Conf{TarClientRestoreCmd} to read

$Conf{TarClientCmd} = ‘sudo $tarPath -c -v -f - -C $shareName’
. ‘ –totals’;

$Conf{TarClientRestoreCmd} = ‘sudo $tarPath -x -p –numeric-owner –same-owner’
. ‘ -v -f - -C $shareName’;

• Also remove plus (+) from $incrDate in $Conf{TarIncrArgs} so it won't be double escaped (need to escape only once when running sudo):

$Conf{TarIncrArgs} = '--newer=$incrDate $fileList+';

• Change $Conf{BackupFilesExclude} (these seem to all be temp files that you don’t really need to backup) to read

$Conf{BackupFilesExclude} = [’/proc’, ‘/dev’, ‘/tmp’, ‘/mnt’, ‘/media’, ‘/sys’, ‘/lost+found’, ‘/usr/src’, ‘/var/lib’, ‘/var/tmp’, ‘/var/cache’, ‘/var/spool’, ‘/var/run’, ‘/var/lock’, ‘/var/games’, ‘/home/*/.Trash’, ‘/home/*/.mozilla/*/*/Cache’, ‘/home/*/.mozilla/*/*/Cache.Trash’];

Add backuppc to the sudoers list

• Run “sudo visudo”
• At the bottom of the file add

# Allow backuppc to run tar without a password
backuppc ALL=NOPASSWD: /bin/tar

• If you are unfamiliar with vi editor: Scroll to the end of last line of the file, press a to start adding text, write magic lines mentioned above, hit esc, type ":w"+enter to save file, ":q" to quit (":q!" to quit without saving changes).

alternatives

For other ways of backing up some or all of your system, see BackupYourSystem .

References

• http://www.howtoforge.com/linux_backuppc
• BackupPC: http://backuppc.sourceforge.net
• BackupPC Documentation: http://backuppc.sourceforge.net/faq/BackupPC.html

Authors

• falko

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