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07-12-2013 10:11 AM
07-12-2013 10:11 AM
Changing P4500 Network Settings
I'm needing to relocate several nodes in some clusters to another datacenter in my environment. I need to also change the network settings for the devices. Can I just simply change the IP/subnet/GW,etc. at the console screen or via CMC? Is there a documented procedure for this.
Some of the nodes are in multisite clusters now, 1/2 of those nodes are moving and needing IP address changes.
Any help would be appreciated.
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07-13-2013 10:06 AM
07-13-2013 10:06 AM
Re: Changing P4500 Network Settings
When you get to the new location just configure the nic from the console.
You can just break the bond, setup 1 NIC with and address and configure them from the CMC much simpler.
Also you will proababy wont to shut down the management group so you dont lose quourm.
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07-17-2013 07:04 AM - edited 07-17-2013 07:08 AM
07-17-2013 07:04 AM - edited 07-17-2013 07:08 AM
Re: Changing P4500 Network Settings
Thanks for the reply Emilo. Once the IP address changes, will it still be seen in the cluster/mgmt group? That's my concern, doesn't the other nodes look for nodes via IP address?
I don't want to shutdown the whole group, I have a FOM running to keep quorum.
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07-17-2013 07:26 AM
07-17-2013 07:26 AM
Re: Changing P4500 Network Settings
I would be concerned about that as well... CMC doesn't follow IP exactly as it has some tie in with MAC address, but I'm not sure if it uses BOTH.
If I were doing this, I would be sure to first turn off any running managers on the nodes that I'm going to be moving. Then, I would change the sites of the nodes that are going to move and/or create the new logical site in CMC and assign the servers to be moved into that site. I would then let any restripe complete locally... after all of that is done, I would finally change the IP information on each node through CMC which would cause each node individually to lose communication w/ the cluster, but would then allow the MAC and IP information to be current on the cluster. I would then manually shut down each node to be moved and then do the physcial move and then when I turned them on in the new site it will come up correct and everything should just work.
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07-17-2013 11:47 AM
07-17-2013 11:47 AM
Re: Changing P4500 Network Settings
Hi,
there is an old but still valid document which describes the steps you have to take.
You will find it here: http://www.itatonce.com/Documents/DOC/lefthand_bestpractice_reip_nsm_120107.doc
Hope this helps.
KR
Stephan
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07-31-2017 06:32 AM
07-31-2017 06:32 AM
Re: Changing P4500 Network Settings
Hello mhc19,
Sorry for dragging up this old thread but how did you get on with this move as we have a similar one to do.
did the following solution work?
“If I were doing this, I would be sure to first turn off any running managers on the nodes that I'm going to be moving. Then, I would change the sites of the nodes that are going to move and/or create the new logical site in CMC and assign the servers to be moved into that site. I would then let any restripe complete locally... after all of that is done, I would finally change the IP information on each node through CMC which would cause each node individually to lose communication w/ the cluster, but would then allow the MAC and IP information to be current on the cluster. I would then manually shut down each node to be moved and then do the physical move and then when I turned them on in the new site it will come up correct and everything should just work.”