hyper-v domain controller machines not synchronize time with AD servers
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Wednesday, July 06, 2011 11:28 AM
Hai,
In my setup i have 2 physical servers with Hyper-v role enabled. In first physical server i installed DC1 it has all 5 fsmo roles.
In my second physical server i installed DC2 as Hyper-v Virtual Machine.
the problem is,
the DC1 taking the time from the physical server1 what it has set.
the same DC2 taking the time from the physical server2 what it has set.
In DC2 when i run the command net time \\dc1 /set it sync with DC1 and taking the time of DC1 and immediately it gets changes to time of Physical server2.
due to this, i face the problem replication issues. how can i synchronize my times with AD????
Please advise
Chandru CT. MCITP
All Replies
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Wednesday, July 06, 2011 11:48 AMModerator
I would start by taking 10 minutes and going over these two articles:
http://blogs.technet.com/b/askds/archive/2010/06/10/how-to-virtualize-active-directory-domain-controllers-part-1.aspx
http://support.microsoft.com/kb/888794You want to make sure the virtual servers aren't getting their time from the hosts and this should help you.
--
Paul Bergson
MVP - Directory Services
MCITP: Enterprise Administrator
MCTS, MCT, MCSE, MCSA, Security+, BS CSci
2008, Vista, 2003, 2000 (Early Achiever), NT4
http://www.pbbergs.com Twitter @pbbergs
http://blogs.dirteam.com/blogs/paulbergsonPlease no e-mails, any questions should be posted in the NewsGroup. This posting is provided "AS IS" with no warranties, and confers no rights.
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Wednesday, July 06, 2011 11:52 AM
HI
I DC2 change VM integration component settings "Not to sync time with host" ( In hyper-V console Right click VM - settings - Management - Intergration Services - Disable Time synchronization )
Also refer following article for some guidelines about configuring Domain Controller on Virtual machine.
Regards.
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Wednesday, July 06, 2011 12:10 PMModerator
Disable the time synchronization for VM's.
http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/11/19/time-synchronization-in-hyper-v.aspx
You can also run rsop.msc to check, if there is another time source configured for time sync.
How to configure authoritative time server
http://support.microsoft.com/kb/816042
Article post by Pbbergs is good, must read it.
Regards
Awinish Vishwakarma| CHECK MY BLOG
Disclaimer: This posting is provided AS-IS with no warranties or guarantees and confers no rights.
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Wednesday, July 06, 2011 12:11 PM
Hello,
DC VMs should never us e the integration services to sync with the host machine. To correct the time follow Paul's suggestion.
Best regards Meinolf Weber Disclaimer: This posting is provided "AS IS" with no warranties or guarantees , and confers no rights. -
Friday, July 08, 2011 3:30 AMModerator
Hi,
For virtual machines that are configured as domain controllers, it is recommended that you partially disable time synchronization between the host system and guest operating system acting as a domain controller. This enables your guest domain controller to synchronize time for the domain hierarchy, but protects it from having a time skew if it is restored from a Saved state. Also, please make sure that your domain does have a correctly configured authoritative time source.
For more information, please refer to the Question #6 (My virtual machine should be synchronizing to the domain (or an external server) – but when I run that command it tells me that the Hyper-V time synchronization provider is being used! How do I fix this!) of the following article:
Time Synchronization in Hyper-V
http://blogs.msdn.com/b/virtual_pc_guy/archive/2010/11/19/time-synchronization-in-hyper-v.aspx
Thanks.
Nina
Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.- Marked As Answer by Nina Liu - MSFTModerator Friday, August 05, 2011 9:16 AM
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