Re: Sudo + ssh and rsnapshot

On Sun, Aug 06, 2006 at 07:56:50PM +0200, S?bastien CRAMATTE wrote:
> Hello list,
> 
> I'm a newbie in rsnapshot but seems to be amazing :)
> 
> I've got various linux server configured to use  sudo
> the root access is disabled (like in Ubuntu)
> 
> How can I setup rsnapshots to get data from these servers
> 
> I think that I should do  :
> - do ssh public keys exchange between servers
> 
> - configure sudo to allow  rsync call without password
> 
> LAN = NOPASSWD: /usr/bin/rsync ...
> 
> 
> I believe that I need to call a line like this ...
> 
> //rsync -avz -e "ssh -i /home/backup/.ssh/id_dsa" --rsync-path='sudo rsync' 
> backup at server <http://lists.samba.org/mailman/listinfo/rsync>:/ 
> /backup/server///
> 
> But with rsnapshots how can I do that ?

You probably don't need the "-i /home/backup/.ssh/id_dsa" if you are 
running rsnapshot as user backup.  But in ay case if you want it,
just put this in your rsnapshot.conf:
        ssh_args        -i /home/backup/.ssh/id_dsa

The rsync path is a little tricky because it has a space in it.
This was discussed in rsnapshot-discuss on July 12 :-
http://sourceforge.net/mailarchive/forum.php?thread_id=22990829&forum_id=41320

  I would suggest the easiest thing is for you to create a shell script that
  just consists of
        sudo /usr/bin/rsync "$@"
  and use that shell script as your --rsync-path.

So you could add something like
        +rsync_long_args=--rsync-path=/usr/local/bin/sudo_rsync
to each backup line (as long as you have a script /usr/local/bin/sudo_rsync
on the machine to be backed up).

___________________________________________________________________________
 David Keegel <djk@xxxxxxxxxxxxxxxxxx>  http://www.cyber.com.au/users/djk/
 Cybersource P/L: Linux/Unix Systems Administration Consulting/Contracting

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