Solved

Change Network vSphere cluster is in

Posted on 2011-03-09
6
573 Views
Last Modified: 2012-05-11
Our vSphere DR cluster is being moved into a new network.   I am looking for advice as to the best sequence to make this happen. The DR site consists of 3 x ESX 4.0 servers, 1 vCenter server and 4 active VMs.  Each server has 4 network cables connected to it for a total of 12 network cables dedicated to the cluster.  There is only 1 distributed vSwitch used by all 3 ESX servers.
My tentative sequence is
1. vMotion VMs off one ESX server.
2.  Put server into maintenance mode.
3.  Via the vCenter server change the ESX server's IP address to new network. (vConsole will loose connection)
4.  Replace old network Cat 5 cables with new network Cat 5 cables
5.  Reestablish vCenter connection to ESX server.  
6.  Continue with 2nd and 3rd ESX server.
7.  Change vCenter server's IP address to new network.
8.  Change active VM's IP address to new network.
9.  Rename distributed switch.  The old network is part of the vSwitch's name.
10.  Update DNS.
0
Comment
Question by:epmmis
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
6 Comments
 
LVL 16

Expert Comment

by:danm66
ID: 35091956
I think you will be better off if you plan on removing each host from vCenter.  Even though you may have registered the hosts in VC by their name, IP addresses get cached on the hosts and put into the VC's database.  The hosts will go into a disconnected state when you change the VC's IP either way and you'll have to re-authenticate the hosts with the root account.
0
 
LVL 23

Expert Comment

by:Luciano Patrão
ID: 35093536
Hi

I think that is a good plan. But using what danm66 as stated, will have no problem on your plan. And you can bypass some issues that you may encounter after the IP change.

The only think that I will add is a new backup Console with a new ip for the new Network.

If the new Network and the old Network can communicate with each other, you not lose the connection from the console(but you will need to connect trough this new IP)

Hope this can help

Jail
0
 

Author Comment

by:epmmis
ID: 35094409
I should modify the plan as follows?
3.  Via the vCenter server change the ESX server's IP address to new network. (vConsole will loose connection)
4.  Delete the host from DR cluster in vCenter Server.
5.  Replace network cables.
6.  Update DNS.
7.  Add the host back into the DR cluster in the vCenter Server by its host name.
Questions -
1.  Should the host be rebooted after changing the IP address and before adding it back into the cluster?
2.  BestWay - I do not understand your suggestion about a backup console with a new IP.  Can the backup console be on the DR vCenter server? If the vCenter server can route to the new IP, is a backup console needed?
3.  How does one make a backup console?

Excellent suggestions. I am most grateful.
0
Optimize your web performance

What's in the eBook?
- Full list of reasons for poor performance
- Ultimate measures to speed things up
- Primary web monitoring types
- KPIs you should be monitoring in order to increase your ROI

 
LVL 16

Accepted Solution

by:
danm66 earned 500 total points
ID: 35096716
to prevent the possibility of leaving an orphaned record of the host in VC database, I'd first remove the host from the vCenter inventory, then connect to it directly with the client and change its IP address.

1 - A reboot shouldn't be needed but I'd do one anyways, just as check to make sure that there's nothing wrong with the host.  
2 - Backup Service Consoles are of limited value, especially if you have remote access to the physical console (ILO, DRAC, IP KVM, etc...).  VC won't access the host through the secondary SC...you can only get to it with a direct connection from the Client.  As long as you have redundant uplinks (different nics to different physical switches) to your primary SC, you are as protected as much as possible, IMO.
0
 

Author Comment

by:epmmis
ID: 35097378
The ESX server's web interface is disabled. I would then change the IP address from the command line.
0
 

Author Closing Comment

by:epmmis
ID: 35139095
Thanks
0

Featured Post

Get HTML5 Certified

Want to be a web developer? You'll need to know HTML. Prepare for HTML5 certification by enrolling in July's Course of the Month! It's free for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The following article is comprised of the pearls we have garnered deploying virtualization solutions since Virtual Server 2005 and subsequent 2008 RTM+ Hyper-V in standalone and clustered environments.
If your vDisk VHD file gets deleted from the image store accidentally or on purpose, you won't be able to remove the vDisk from the PVS console. There is a known workaround that is solid.
This tutorial will walk an individual through the steps necessary to enable the VMware\Hyper-V licensed feature of Backup Exec 2012. In addition, how to add a VMware server and configure a backup job. The first step is to acquire the necessary licen…
This video shows you how to use a vSphere client to connect to your ESX host as the root user. Demonstrates the basic connection of bypassing certification set up. Demonstrates how to access the traditional view to begin managing your virtual mac…
Suggested Courses

631 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question