Recently, one of our Hyper-V virtual machines has periodically stopped responding over the network. It seems to be happening every few days, and it occasionally happens up to several times a day. I am by no means a sysadmin, so any direction you guys could provide would be very welcome. I've included everything I know to include below. If you need any additional information, I'll be glad to include it.
- I can connect through the Hyper-V console.
- I can't connect to network shares, IIS web apps, using RDP, or using ping.
- Memory usage seems to be normal (3 of 4 GB)
- Processor usage seems low.
We don't know the exact time the server goes down, but the following error appears consistently around the time it goes down:
Error 5719, NETLOGON
This computer was not able to set up as secure session with a domain controller in domain***due to the following: There are currently no logon servers available to service the logon request. This may lead to authentication problems. Make sure that this computer is connected to the network. If this problem persists, please contact your domain administrator.
EDIT
Here's a few details I missed during the initial post.
- Both the Hyper-V server and the VM are running Windows Server 2008 Standard.
- There are 6 VMs on the Hyper-V server, all sharing one external virtual network that runs on a gigabit adapter.
- The problem seems to be isolated to this one VM.
- At least one of the other VMs on the server is fairly high load.
-
Did you create a virtual network for the Server? Also how did you configure the VM when you set it up? What O.S is on the VM ?
From Jemartin -
I would start with basic troubleshooting.
- Are there any other guests running on the host where the problematic machine is running? If so, are they experiencing any problems, or is it isolated to this one machine?
- At the time that this machine is unresponsive, is there anything else going on in your environment that utilizes a lot of bandwidth?
- Do you have the virtual switch configured correctly for that guest machine?
- Are there any events that show up consistently before your Netlogon error that might point to what is going on?
From Holocryptic -
Is there any chance of an IP address conflict? If the server has a static address, does it overlap with any DHCP pools? Remember that your Windows DHCP pool may not be the only one in your environment, particularly if you have devices like VPN appliances or WLAN controllers.
Are there other VMs sharing the same physical network interface? Do they all have network connectivity when this one doesn't?
From Miles Erickson -
Hi
I heve this same problem on a virtual machine running on a 3 HV server's cluster.
One of our virtualized win2003SP2 standard servers stops to respond through the network, I enter the server via MS SC VMM or via the Hyper-V console on the node where the VM is and it seems that it lost it's network interface... if I try to go to properties of the network interface I get no window so I'm unable to do Disable/Enable to see if the connection cames back. I have other VM's using the same Virtual Switch on the server and they continue to work without any problem.
To recover the situation I just have to restart the VM or to Migrate it to another Hyper-V node of the cluster.
I saw the System Event Log and I've found several events like the one's below:
Type: Information
Source: netvsc
Category: none
Event ID: 4
The miniport 'Microsoft Virtual Machine Bus Network Adapter' reset.
For more information, see Help and Support Center at
.
or
Type: Warning
Source: netvsc
Category: none
Event ID: 5
The miniport 'Microsoft Virtual Machine Bus Network Adapter' hung.
For more information, see Help and Support Center at
But I really don't understand why they happen.
Best regards, Miguel Branco da Silva Lisboa - Portugal
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