Re: Backup mirror machine

From: Alvin Oga (aoga_at_mail.Linux-Consulting.com)
Date: 05/06/05

  • Next message: Steve Vejcik: "Re: xmesalib" 
    Date: Thu, 5 May 2005 15:30:46 -0700 (PDT)
To: Bill Moseley <moseley@hank.org>

    On Thu, 5 May 2005, Bill Moseley wrote:

    > What I currently have is one machine that is basically a mirror of
    > another, but has different public and internal IPs. So to replace the
    > main machine I'd have to go through the various configs and change IPs
    > (and change bind from a slave to a master). Actually, it's currently
    > a matter of changing a few symlinks, but still it's not a very good
    > system.

    one script ... change-me-from-slave-to-master.sh and symlinked to "N"
     
    > What I'd like to do, I think, is have a system that ran as a separate
    > machine, but I could reboot and at the LILO prompt select another
    > configuration that makes it boot with the other machines IPs and
    > config settings.

    i assume the "other machines ip" is after the slave has been changed
    into master

    you cannot tell lilo to boot a remote machine

    you can tell pxe boot to boot off the other remote nfs-server machine
    and this machine does not have any disks

    > Perhaps mounting different /etc, /var, and /home. (and
    > what else?) assuming I have the same package set and versions.

    each machine should have its own copy of mirrored data
    of what ever you need ...
            - try it and see ... is your only real answer ..

            - nobody else knows where you put all your data and how
            your system is installed

    > Those /etc, /var, /home, etc. could be rsync backups based on this
    > procedure:

    and your more import conf files is in /etc and cannot be live on the
    2nd mirror system since its ip# and names are different
            - you'd need to tell rsync to skip all these different files
            from being rsync

    > http://www.mikerubel.org/computers/rsync_snapshots/
    >
    > Any Suggestions?

    gazillion ways to do it

    c ya
    alvin 

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