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Replication problem between domain controllers after migration to another Hyper-V host!

This post isn’t related to virtualization, but I want share my experience with you. Before few days ago I migrated virtualized domain controller from one Hyper-V host to another. The migration process was very simple, but when I started my DC and I had replication problem between primary and secondary (migrated) domain controller.
When I wanted to make replication I got this error:

“The destination server is currently rejecting replication request”…

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Resolution:

Open command prompt as administrator on all DCs and run the following commands:

repadmin /options <DC NAME> +disable_outbound_repl press Enter
repadmin /options <DC NAME> -disable_outbound_repl press Enter
repadmin /options <DC NAME> +disable_inbound_repl press Enter
repadmin /options <DC NAME> -disable_inbound_repl press Enter

NOTE: Replace <DC NAME> with your DC name.

After you are done, try to replicate your DCs. If all went well DCs will be replicated.

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Enjoy and have a nice weekend :)

Romeo Mlinar
October 19, 2012
Administration, Hyper-V, Recovery, Virtualization, Windows Server
4 comments

Microsoft MVP for Virtual Machine

I have received an e-mail (my favorite so far) before two days ago, actually at October 1st, from Microsoft with text:

“Dear Romeo Mlinar,

Congratulations! We are pleased to present you with the 2012 Microsoft® MVP Award! ….. We appreciate your outstanding contributions in Virtual Machine …”

mvp_horizontal_fullcolor

This is something that makes me proud, happy, and gives me stimulation to do what I do even more harder and better than before.

Thank you Microsoft for this greatest MVP Award, and I’m proud to become a part of this prestigious community.

I would like to say THANK YOU to everyone that supported me on the way to this award.
Especially would like thanks to: Alessandro Teglia (MVP lead for CEE and Italy), thanks man ;), Microsoft Croatia, my friends and colleagues; Marin Frankovic, Nenad Trajkovski, Tomislav Bronzin, Igor Pavlekovic, Robert Petrunic, Tomica Kaniski, Marko Sever, Drasko Ivanisevic, Adis Jugo (I owe you a lamb ;)), Ognjen Bajic, Ivan Kardum and others… sorry if I forget someone, I’m still very excited.

Now, let’s get back to work :)

Romeo Mlinar
October 3, 2012
Hyper-V, Microsoft MVP, MS Community, Virtualization
4 comments

Hyper-V 3.0 on Windows Server 2012 Core

In my previous post I wrote about Microsoft Hyper-V Server 2012, and I explained how to install and configure. Among other things I described how to enable Hyper-V Manager console on Windows Server 2012 Core and some of my blog visitors have been realized that we can install Hyper-V manager console direct on Hyper-V Server 2012! No, you can’t install Hyper-V Manager console on Hyper-V Server 2012, but you can connect remotely with Hyper-V manager console or with some others third-party software.

Few interesting things about WS2012 Core:

Windows Server Core is a very lightweight installation with access limited to the command line and PowerShell.
If you have deployed Server Core and then there is a change in what needs to run on the server that requires either Minimal Server Interface or Server with a GUI you can now convert up without having to reinstall and rebuild the server.
If there are any issues that you need to troubleshoot or configuration changes you want to make and find it easier to do either with the local GUI tools, you can convert to either Minimal Server Interface or Server with a GUI.
You can install Server with a GUI, configure the server as desired for your environment, and then convert to Server Core for production and get all the servicing and reboot reduction benefits of Server Core. Isn’t this wonderful?

 

Let’s see how to configure WS2012 Core and how to enable Hyper-V role on it.
When the installation is complete you will see black screen with white letters (command prompt) in the front of you. In the command prompt type sconfig and blue screen with white letters will appear Smile. This is Server Configuration command tools.
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First I’ll change computer name (option 1), and then I’ll enable Remote Desktop (option 7) and Network Settings (option 8). I need to enable Remote Desktop and connect with RDP on newly installed server because it’s very cold in a server room Smile.
Now I’ll join server to the domain (option 1), activate windows and I’m done with basic setup.
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When we have all necessary prerequisites enter the following command to install the Hyper-V role:

dism /online /enable-feature /FeatureName:Microsoft-Hyper-V

The installation will begin and you will be prompted to restart the server in order to complete the setup.
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Now, we need to enable Hyper-V Manager console which gives you a GUI.
Open PowerShell (type PowerShell in command prompt) and enter following command:
Install-WindowsFeature Server-Gui-Mgmt-Infra –Source “source destination”
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When we are done launch the Hyper-V Manager from a command line by typing virtmgmt.msc. and enjoy in your WS2012 Core with Hyper-V role installed Winking smile.
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Also, if you do not want to use Hyper-V manager console on Hyper-V host you can connect remotely, (this is recommended if you have more than one Hyper-V host) with Hyper-V manager console, VMM console or with some other third-party software like 5nine or VT Utilities for Hyper-V.
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I hope this could be helpful.

Enjoy in the rainy weekend Smile

Romeo Mlinar
September 17, 2012
Administration, Hyper-V, Microsoft, Virtualization, Windows Server
10 comments