Solved

DCPromo and vCenter - Demoting Server 2K3 drops hosts from vCenter

Posted on 2012-04-04
4
713 Views
Last Modified: 2012-08-13
I recently promoted a new 2K8 R2 server to be a domain controller.  All of the roles were transfered to the new server, and I demoted the server 2k3 DC.  After that, vCenter started to lose the hosts connection.  One hosts was disconnected from vCenter right away and the other 4 followed.  Luckily I took a snapshot of the 2k3 server and reverted it.  After that was completed, I was able to reconnect the hosts.  What would I be missing that would cause this issue.  Thanks in advance for your assistance.
0
Comment
Question by:ICCNetworkAdmin
4 Comments
 
LVL 6

Expert Comment

by:Kiran Ch
ID: 37807016
Can you pls check that the DNS entires for the esx hosts are there in the new w2k8 DC?
0
 
LVL 117
ID: 37807074
You reverted a Domain Controller, from not being a DC to a DC, how is your Active Directory?

check communication between vCenter and the hosts, can you ping by hostname, and IP addresses, and also tracert by IP address?
0
 
LVL 3

Accepted Solution

by:
unsatiated earned 250 total points
ID: 37807080
Check what DNS server is configured in the ESX hosts as well.
0
 

Author Comment

by:ICCNetworkAdmin
ID: 37807106
I did check, and the ESX hosts have a DNS entry for the 2k3 server and our 2k8 DNS server.  I just now changed the DNS server from the 2k3 to the new 2k8 R2 server.  I will try the demotion again tonight.  Thanks for the responses.
0

Featured Post

How your wiki can always stay up-to-date

Quip doubles as a “living” wiki and a project management tool that evolves with your organization. As you finish projects in Quip, the work remains, easily accessible to all team members, new and old.
- Increase transparency
- Onboard new hires faster
- Access from mobile/offline

Join & Write a Comment

Create your own, high-performance VM backup appliance by installing NAKIVO Backup & Replication directly onto a Synology NAS!
Will try to explain how to use the VMware feature TAGs in the VMs and create Veeam Backup Jobs using TAGs. Since this article is too long, I will create second article for the Veeam tasks.
Teach the user how to use vSphere Update Manager to update the VMware Tools and virtual machine hardware version Open vSphere Client: Review manual processes for updating VMware Tools and virtual hardware versions: Create a new baseline group in vSp…
With the advent of Windows 10, Microsoft is pushing a Get Windows 10 icon into the notification area (system tray) of qualifying computers. There are many reasons for wanting to remove this icon. This two-part Experts Exchange video Micro Tutorial s…

705 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

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now