[K12OSN] Server Backups

dahopkins at comcast.net dahopkins at comcast.net
Fri May 14 19:54:45 UTC 2004

I use rsync snapshots.  Check out http://www.mikerubel.org/computers/rsync_snapshots/  I use a variation of this.

It allows me to have all backups online for all users. I nfs-mount (read only) the backup directory from the backup server to the same system that has /home.  The users can get their own data back, but since permissions are preserved, can't access anything they shouldn't.  It has worked very well all year.  I also rsync data from my Windows server.

 I then dump these to tape (CD-RW) as well from the backup server.  I might move to backuppc though, just haven't seen the total need for it yet.

Dave Hopkins

> Something you might also look into:
> http://backuppc.sourceforge.net/
> I haven't had a chance to play with it much, but at first glance it
> appears to be exactly what we're looking for here to do backups. It is
> even supposed to do M$ Windows machines. Over the summer we're going to
> be testing it here...but it might be worth it to check out. Just a
> thought.
> -Calvin
> On Fri, 2004-05-14 at 09:52, Jim Kronebusch wrote:
> > I am finally starting to mess with backing up my new servers.  What I am
> > doing is setting up a backup server for all servers to send to.  I have
> > exported an NFS of /backup to the network for the other servers to
> > backup to.  I have issued a "mount xxx.xxx.xxx.xxx:/backup mnt/backup"
> > to mount the NFS Export from the remote server on all other servers.  I
> > am using the Webmin module for creating backups and have created nightly
> > schedules for each server to do a full backup (at staggered times to not
> > flood the backup server).  I plan on adding the mount of the NFS to
> > /etc/fstab to mount the filesystem automatically on startup.
> > 
> > Now for the questions.  
> > 
> > 1. How do I create these as full backups every 7 days but incremental in
> > the interim?  I want to have daily backups for a 7 day period mostly for
> > user stupidity and have them backup incrementally after the first time.
> > I have set the backup option to 9 instead of 0 (Full Backup) and I still
> > get errors saying there is no previous backup so it defaults to a full.
> > What is the best way to do this?
> > 
> > 2. Is this the easiest way to restore a crashed system?  I am hoping to
> > boot from a floppy or CD and just mount the NFS and run some simple
> > restore command.  If so what commands would need to be issued.  I plan
> > on crashing a test server and restoring it to prove that this works.
> > 
> > 3. I am sure I can find this from another post in the archive, I saw it
> > a while ago, but is there a list of files necessary to restore when
> > moving to a new system?  If my server dies completely and has no hope of
> > coming to life any time soon, and I find a new box and load WBEL on it,
> > I need to restore /home and a handfull of other files to load the users
> > and modules and say the appletalk and samba conf's.  Is there good area
> > of reference to know what to restore for each service, or is that where
> > experience comes in?
> > 
> > 4. Security, I want to be sure some other linux user with a handfull of
> > knowledge can't just jump on the network and start restoring files, how
> > is this controlled.
> > 
> > 5. Windows (forgive the profanity), are Windows systems able to mount
> > NFS and backup to them as well?  This would be handy for some of our
> > Windows servers to use that are not on the local network and thus have
> > to access to Samba.
> > 
> > 6. I am sure someone has a better way to do this, I am open to
> > suggestions (as long as it doesn¢t involve an overpriced and ancient
> > technology like tapes).
> > 
> > Thanks
> > 
> > 
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> > 
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> -- 
> Calvin Park
> Associate Director of Computer Services
> Davis College: A Practical college of Bible and Ministry
> web: www.davisny.edu
> email: csitech at davisny.edu
> phone: 607.729.1581 ext 404
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