If you didn't explicitly change the configuration to static and your nodes
were named 'n1' through 'n100', you should be able to:
psh n1-n100 shutdown -h now
nodech n1-n100 hosts.ip='|192.168.2.($1)|'
nodels n1,n100 hosts.ip (make sure that the result was what you wanted)
makehosts n1-n100
makedns
makedhcp n1-n100
rpower n1-n100 on

And that should do it.  Certainly your mileage may vary, and maybe start by
doing it to one node.  If your scheme does not have 192.168.2.1 as n1, then
it would need to be modified.



From:   Dennis Zheleznyak <[email protected]>
To:     [email protected]
Date:   03/04/2014 10:35 AM
Subject:        [xcat-user] Changing IP address of existed nodes



Hi All,

I have a xCAT cluster that consists of 100 nodes that are already running
and I need to change their IP address from 192.168.1.X to 192.168.2.X - how
can it be done through xCAT without changing one by one ? and what is the
procedure(which tables do I need to modify and etc..)

Thank you,
Dennis.
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