?
Solved

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

Posted on 2012-04-04
4
Medium Priority
?
739 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
[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
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 123
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 1000 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 Blockchain Is Impacting Every Industry

Blockchain expert Alex Tapscott talks to Acronis VP Frank Jablonski about this revolutionary technology and how it's making inroads into other industries and facets of everyday life.

Question has a verified solution.

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

An article on effective troubleshooting
This article outlines why you need to choose a backup solution that protects your entire environment – including your VMware ESXi and Microsoft Hyper-V virtualization hosts – not just your virtual machines.
Teach the user how to configure vSphere clusters to support the VMware FT feature Open vSphere Web Client: Verify vSphere HA is enabled: Verify netowrking for vMotion and FT Logging is in place or create it: Turn On FT for a virtual machine: Verify …
Teach the user how to install and configure the vCenter Orchestrator virtual appliance Open vSphere Web Client: Deploy vCenter Orchestrator virtual appliance OVA file: Verify vCenter Orchestrator virtual appliance boots successfully: Connect to the …
Suggested Courses

764 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