Re: Backup System
On 20120204_103752, Scott Ferguson wrote:
> Reposting to the list
>
> On 04/02/12 04:35, Gary Roach wrote:
> > To your questions:
>
> <top post re-edited as interleaved style>
>
> >
> > On 01/-10/-28163 11:59 AM, Scott Ferguson wrote:
> >> On 03/02/12 13:45, Gary Roach wrote:
> >>
> >>> I have 3 computer running on Debian Squeeze. One has an unused
> >>> hard drive that I wish to use as a backup disk for all 3
> >>> computers. Is there a simple way to do this that can be
> >>> completely automated.
> >>>
> >>> Gary
> >>>
> >>>
> >>>
> >> Yes - there are a large number of ways. (as "apt-cache search
> >> backups" will show you)
> >>
> >> Is there a particular box you wish to control the backups from?
>
> > Yes there is one box that should control the backup process.
>
> >> Is it local?
>
> > All 3 computers are in the same room.
>
> >> Are you a GUI user or do you prefer the command line?
>
> > I don't care whether GUI or command line just as long as it is
> > straight forward.
>
> The "straight forward" bit will depend on how well you understand your
> requirements. :-)
>
>
> >> If the former - which desktop are you using?
>
> > I use KDE.
>
> >>
> >> How often do you want to run backups? How much space do you have
> >> to store backups? How long to you intend to keep backups? How big
> >> are the backups you plan on making?
> >>
>
> > I want to backup every day. I would prefer incremental backups with
> > a full backup say 1 per month. A full backup will probably take no
> > more than 5% of the hard drive space. I would prefer that the full
> > backup over write or erase the older backups.
> > Good questions
>
> I missed (at least) one.... so I'll answer it myself ;-p
>
> If one of those boxen is a database server use LVM snapshots not
> selective rsync.
>
> >
> > Gary
> >>
> >> Kind regards
> >>
> >>
>
> NOTES: "full backup" is this instance means everything required to
> restore from bare metal (as opposed to "full data backup"). The
I have tried, in the past to have full backup as defined here. But it
didn't work for me. I've found that for a Debian system as used by me.
a list of installed Debian packages is more workable than a full copy
of /bin, /sbin, /boot, portions of /var, and so forth. It IS useful
the have a full copy of /etc, /home, and /root (because I keep
personal stuff about sysadmin there). In practice, when I had a
serious system malfunction, I did feel sure of my system again until I
had done a full, fresh install. And policy is that all config files
are in /etc, not in /var or other strange places.
YMMV
> combination of a full backup, and an archive of incremental backups can
> allow you to restore a choice of points in time.
> If you only want full data backup capability - the suggested daily
> backup utilities can do that.
>
> CLI suggestion:-
> ;rsync on a daily basis, make it a cron job, after the first run backups
> will on copy changed files. Very fast, minimal space required.
> ;fsarchiver for your full backups (it'll cope with ext4), requires nfs
> or samba.
> ;for convenience use WOL (if available) and run the backups during your
> downtime.
> ;not a backup strategy, but useful for recovery purposes - apt-cacher
>
> GUI suggestion:-
> ;kbackintime for daily backups - for network support, I found fish
> unreliable, the alternative is sshfs and autofs.
> ;FOG[*1] - I use dedicated boxen for it, but you could install it onto
> the backup box, or a USBkey.
>
> These are by no means the best, or only solutions. My preference is for
> the cli solutions, point and click clients prefer KBackInTime.
>
> Now that your requirements are known others will be better able to give
> you useful suggestions.
>
> Some useful references:-
> http://wiki.debian.org/BackupAndRecovery
>
>
> Kind regards
>
> [*1]http://www.fogproject.org/
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--
Paul E Condon
pecondon@mesanetworks.net
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