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Date:      Mon, 15 Jan 2001 18:25:43 -0600
From:      David Kelly <dkelly@hiwaay.net>
To:        "Dave VanAuken" <dave@hawk-systems.com>
Cc:        freebsd-questions@FreeBSD.ORG
Subject:   Re: Poor mans backup solution required 
Message-ID:  <200101160025.f0G0PhR82618@grumpy.dyndns.org>
In-Reply-To: Message from "Dave VanAuken" <dave@hawk-systems.com>  of "Mon, 15 Jan 2001 09:46:38 EST." <DBEIKNMKGOBGNDHAAKGNEEFECOAA.dave@hawk-systems.com> 

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"Dave VanAuken" writes:
> Have a couple of low end servers... 10GB IDE drives.
> 
> Wish to offer backup as an extra bit of value, but these particular
> systems (nor the data for that matter) are really worth installing
> tape, upgrading to SCSI, or installing IDE RAID.
> 
> Any recommendations for perhaps tar-ing the directory tree to a second
> IDE drive each night, or other solutions involving the cost of adding
> another $100 IDE drive.

You could NFS mount space off another machine and write the tar file(s) 
there. Or if you enable the Sun RPC commands (rsh, rlogin, etc.) and 
make the holes for rlogin w/o password, you can have tar write directly 
without NFS. "tar -cvzf user@hostname:full-path.tar.gz files... "

Notice closely, "make the holes for rlogin w/o password." Make sure you
understand the risks. Am not good enough with ssh to know how to
completely replace the Sun RPC utilities with ssh. Or how to run tar
thru ssh. You would probably want the encrypted authentication exchange 
but not a fully encrypted link.

Something else to consider: don't leave the .tar files laying around
where anybody can read them. If you tar the user files as root so that
tar can read them, and later a user can read the tar file, then that
user can read anything that has been backed up. Such as the master
password file. Or other user's private information.

So, set your umask to 77 before running the backup.


--
David Kelly N4HHE, dkelly@hiwaay.net
=====================================================================
The human mind ordinarily operates at only ten percent of its
capacity -- the rest is overhead for the operating system.




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