[rhn-users] Cloning machines

[Kyle Wilcox]

Using fresh RH installs of the same configuration, you can keep two
servers cloned from the get-go using the 'rsync' utility.  This will
clone the files and directory structure, leaving the partition table,
MBR (etc.) alone.

If you can't do fresh installs, use DD to create an 'clone' image of the
entire hard drive and put it into another machine.  This will work if
they have the same hardware.  You will have to configure anything server
specific (IPs, MACs, etc) and then you can start using 'rsync' to keep
the two servers cloned.

This is how I clone webservers so if hardware goes down I can just
switch IP on the DNS.


Jerry Roy wrote:
>  I’ve got several Dell 2950s with RHEL4AS. Our client wants us to clone
> the OS from one machine onto all the others such that all systems are
> “identical” from an OS perspective.  Can someone give me a general
> outline of steps to take that will result in multiple identical machines
> while avoiding some of the “gotchas” like overwriting the /etc/fstab
> file. Etc?  Obviously, I found that one first hand.  In advance, thank you.
> Jerry
> 
> 
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-- 

 Kyle Wilcox
 NOAA Chesapeake Bay Office
 410 Severn Avenue
 Suite 107A
 Annapolis, MD 21403
 office: (410) 295-3151
 Kyle.Wilcox at noaa.gov