[K12OSN] RSYNC Question

[Spencer, John]

The man page is very helpful, below is what I do:
 
rsync -avcz -e ssh $Sourcehost:/$path $destinationhost:/$path
 
a = archive  **backup mode
v = verbose  **good to not use when being run as a cronjob or as an unattended script, ie 'rsync -acz'
c = checksum  **verify packets don't change in transit
z = compress  **decrease network bandwidth needed for use
e = specify protocol to use, I prefer ssh to envrypt the packet traffic

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From: k12osn-admin at redhat.com [mailto:k12osn-admin at redhat.com] On Behalf Of Jim Kronebusch
Sent: Wednesday, March 10, 2004 9:45 AM
To: k12osn at redhat.com
Subject: [K12OSN] RSYNC Question


I have seen some stuff referring to rsync with backing up servers.  Can anyone tell me how this works?  Can I use this to make an exact copy of my running production server to a backup server of either equal or lesser hardware.  Idea being that upon hardware failure of the production server I would have an up to date backup (or possibly only 24hrs behind) to swap in and run as a temporary production server until the main hardware was repaired.  Let me know if this is feasible (maybe I need identical hardware) and if so where to start (what commands to issue).  Ideally I would like to have the two machines running a scheduled periodic backup that was automatic and did not require any manual intervention.
 
Thanks


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