Hi Jarod,
Thank you very much ! I will build a virtual lab and I'll try it !
Hi Jonathan,
The link you've provided is useful when you want to re-install the nodes -
I can't allow that :)
I used regular expressions to define my host so I assume I only need to
change one line :)
All my clients are configured as DHCP, when the DHCP server is the xCAT
server.
Thank you for the suggestions though :)
Thank you,
Dennis.
On Tue, Mar 4, 2014 at 5:56 PM, Jonathan Hermann <
[email protected]> wrote:
> Hi Dennis,
>
> beforehand let me say, though working for big blue I'm not official xCAT
> support...
>
> Is this what you're looking for?
>
> http://sourceforge.net/apps/mediawiki/xcat/index.php?title=Changing_the_Service_and_compute_nodes_Hostname_and/or_IP
>
> Static IP addresses should be set in the hosts table. Now there are many
> ways to change table entries... one would be to "tabedit hosts" and use vi
> command to search and replace. (See
> http://www.felixgers.de/teaching/emacs/vi_search_replace.html )
>
> Important is to delete the old DHCP config: "makedhcp -d noderange" and
> after the table entries have been changed, "makedhcp noderange". See the
> makedhcp man pages for details.
>
> ...a comment on this: "static" IP in xCAT would mean that this node always
> gets the same IP address from the DHCP server. If you have stateful nodes
> with static IPs (in this case you probably have used the hardeths
> postscript) just write a simple shell script that changes the respective
> ifcfg file on the nodes. You can use vanilla tools like updatenode or even
> xdcp and xdsh to run it.
>
>
> Mit freundlichen Grüßen / Kind regards
>
> Jonathan (Nathan) Hermann
> IT Specialist
> Global Technology Services / Data Center Services
>
>
>
> Mobile: +49-160-98976942
> IBM Allee 1
> E-mail: [email protected]
> Ehningen, 71139
>
> Germany
>
>
>
> IBM Deutschland Infrastructure Technology Services GmbH
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> Registergericht: Amtsgericht Stuttgart, HRB 727973
>
>
>
> From: Dennis Zheleznyak <[email protected]>
> To: [email protected]
> Date: 04.03.2014 16:33
> 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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