Failover Cluster - Hyperv Networking

Hi All
I am in the middle of a private cloud project and i am having a few issues with my Fail over Clustering
I ended up creating my fail over which ran successfully but later complained about my Networking
This is a fully virtualized environment with 3 hyper v hosts running windows server 2012 R2.
These are my network settings.
I have put the main and cluster ip addresses as shown above on vmnet 3 and 4.(vmware workstation)
I am not sure of how to configure the hyper v virtual switch network tho.
so i have a feeling this could be the error i am getting when i try to validate my fail-over cluster.The error is shown below
Regards to all

"is there any other way i can just create a two node fail over in vmware workstation without having to use physical servers "
Absolutely! You will need at least three VMs. One VM will be your Active Directory domain controller and your shared storage server (not a best practice, but it seems like you are creating a lab, so it will work). Then you will need two
to be the nodes of the cluster. On the first machine you will need to set up either iSCSI or SMB - SMB is a lot easier.
http://blogs.technet.com/b/josebda/archive/2013/08/16/3587652.aspx provides a step by step guide for setting up a configuration that is more complex than you want, but it should
help you get started. He uses a three node cluster, but two will do. And, he is doing things under Hyper-V, so some things will have to be translated to the VMware environment. Of course, if you use Hyper-V on a Windows 8.1 system instead
of VMware workstation, more will apply.
. : | : . : | : . tim

Similar Messages

Cannot migrate VM in VMM but can in Failover Cluster Manager network adapters network optimization warning

I have a 4 node Server 2012 R2 Hyper-V Cluster and manage it with VMM 2012 R2. I just upgraded the cluster from 2012 RTM to 2012 R2 last week which meant pulling 2 nodes out of the existing cluster, creating the new R2 cluster, running the copy
cluster roles wizard since the VHDs are stored on CSVs, and then added the other 2 nodes after installing R2 on them, back into the cluster. After upgrading the cluster I am unable to migrate some VMs from one node to another. When trying to do
a live migration, I get the following notifications under the Rating Explanation tab:
Warning: There currently are not network adapters with network optimization available on host Node7.
Error: Configuration issues related to the virtual machine VM1 prevent deployment and must be resolved before deployment can continue.
I get this error for 3 out of the 4 nodes in the cluster. I do not get this error for Node10 and I can live migrate to that node in VMM. It has a green check for Network optimization. The others do not. These errors only affect
VMM. In the Failover Cluster Manager, I can live migrate any VM to any node in the cluster without any issues. In the old 2012 RTM cluster I used to get the warning but I could still migrate the VMs anywhere I wanted to. I've checked the network
adapter settings in VMM on VM1 and they are the same as VM2 which can migrate to any host in VMM. I then checked the network adapter settings of the VMs from the Failover Cluster Manager and VM1 under Hardware Acceleration has "Enable virtual machine
queue" and Enable IPsec task offloading" checked. I unchecked those 2 boxes refreshed the VMs, refreshed the cluster, rebooted the VM and refreshed again but I still could not live migrate VM1. Why is this an issue now but it wasn't before
running on the new cluster? How do I resolve the issue? VMM is useless if I can't migrate all my VMs with it.

I checked the settings on the physical nics on each node and here is what I found:
Node7: Virtual machine queue is not listed (Cannot live migrate problem VM's to this node in VMM)
Node8: Virtual machine queue is not listed (Cannot live migrate problem VM's to this node in VMM)
Node9: Virtual machine queue is listed and enabled (Cannot live migrate problem VM's to this node in VMM)Node10: Virtual machine queue is listed and enabled (Live Migration works on all VMs in VMM)
From Hyper-V or the Failover Cluster manager I can see in the network adapter settings of the VMs under Hardware Acceleration that these two settings are checked "Enable virtual machine queue" and Enable IPsec task offloading". I unchecked those
2 boxes, refreshed the VMs, refreshed the cluster, rebooted the VM and refreshed again but I still cannot live migrate the problem VMs.
It seems to me that if I could adjust those VM settings from VMM that it might fix the problem. Why isn't that an option to do so in VMM?
Do I have to rebuild the VMM server with a new DB and then before adding the Hyper-V cluster uncheck those two settings on the VM's from Hyper-V manager? That would be a lot of unnecessary work but I don't know what else to do at this point.

Hyper-V Failover Cluster - Inconsistent Network Availability

We've got a Small cluster with, 7 hosts and a dozen or two VM's. For some reason i'm getting inconsistent availability with the Cluster networks. The host seem to function fine on there own but theres all types of issues using Migration which
i'm assuming is because certain hosts think other hosts are unavailable. For Example:
Cluster Network 1 - From Host 8
Cluster Network 1 - From Host 10
As far as I can tell all of the networks are UP. I can ping all hosts on all interfaces. What criteria goes into determining host availability?

Hi,
Maybe you forgot to configure the Live migration Settings,
In the Failover cluster manager->right click networks-> select the livemigration network.
Hope this helps.
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Failover Cluster 2012 Network Name fails to come online.

Hi,
I created a new one node Windows 2012 failover cluster. The cluster was created successfully, but configuring Client Access Point finished without creating VCO in Active Directory. Then I created computer object in the same OU
with cluster according article
http://technet.microsoft.com/en-us/library/cc732035(v=ws.10).aspx
Permissions on OU and VCO for cluster account where escalated to FULL, DNS A and PTR records where created, quota related to creating computer objects was increased, but has fixed my problem: events 1194 and 1069 are generated on attempt to online
network name. Following one guide, I tried to find the registry key for network name resource that corresponded with the GUID of the object of VCO, but it was absent here.
I've investigated everything I could find and found no solution.
Any help would be appreciated.

Hi,
Please install the Recommended hotfixes and updates for Windows Server 2012-based failover clusters update first, then try again.
Recommended hotfixes and updates for Windows Server 2012-based failover clusters
http://support.microsoft.com/kb/2784261
Hope this helps.
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

Windows 2012 Failover Cluster - File server role (vCO)

Hi,
I wonder if anybody can shed some light on a query i have.
A windows 2012 failover cluster will be built in AD domain example.uk. Cluster File server roles will be created and will reside in this domain also.
We also have a requirement to run a cluster file server role in the child domain off secure.example.uk. Is this possible? or do the file server roles and related vCO's have to reside in the same domain as the cluster (CNO).
I know the CNO can be used to create the VCO but could a prestage a VCO in the child domain of secure.example.uk.
Mark

Hi Mark,
By default CNO will create
VCO automatically in default domain computer OU, we generally use the
KISS principle to place the CNO and VCO to the same OU, and as far as I know there no known design document indicate the VCO can be placed in different domain, therefore I suggest you place the CNO and V CO at same OU.
More information:
When Creating a New Resource or Role in Windows Server 2012 R2 Failover Cluster, the Network Name Fails to Come Online or Failed to Create Associated Computer Object in Domain
http://blogs.technet.com/b/askpfeplat/archive/2014/11/17/when-creating-a-new-resource-or-role-in-windows-server-2012-r2-failover-cluster-the-network-name-fails-to-come-online-or-failed-to-create-associated-computer-object-in-domain.aspx
CNO Blog Series: Increasing Awareness around the Cluster Name Object (CNO)
http://blogs.technet.com/b/askcore/archive/2012/09/25/cno-blog-series-increasing-awareness-around-the-cluster-name-object-cno.aspx
How to Create a Cluster in a Restrictive Active Directory Environment
http://blogs.msdn.com/b/clustering/archive/2012/03/30/10289577.aspx
Prestage Cluster Computer Objects in Active Directory Domain Services
https://technet.microsoft.com/en-us/library/dn466519.aspx
I’m glad to be of help to you!
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

HyperV Failover Cluster - twice some vms lost network

So i run a 4 node Hyper V Failover Cluster and twice now.... out of months of operations out of the blue on a node a portion of the VMs just lose network access(this has happened on two different nodes). I can just pause the node and everything migrates
off, and then its back up and going. Give it some time and i can unpause and move back. I am looking for ideas on what could be causing this.
There servers are Dell Power Edge 620 with the latest MS patches and Dell drivers and firmware. On my public side i have a 2 nic team using MS software teaming.

What are the NICs?
If Broadcom Netextreme disable VMQ as there's a known issue with them resulting in network loss
They are broadcom :/
Thanks for the tip.
I will google around but do you have any links for this information?
*EDIT*
http://support2.microsoft.com/kb/2986895

Hyper-V internal (1 of 2, NOT Cluster) network unavailable in Failover Cluster Manager 2008R2

Hi all,
I had a very strange situation in my Hyper-V 2 nodes-cluster:
I have one networtk for HertBeat only (10.0.0.0/24) and second for HyperV internal networking for virtual machines (In properties marked "Do not allow clustern network communication")
Machines were working properly and any migration too.
One day, my secon done HyperV2 was marked red in Failover Cluster Manager mmc. I discovered that HyperV LAN is unavailable on this second node. BUT everything war working properly - HyperV2 node was on internet, communicated to AD domain, even culd run any
virtual machine...
Several times I checked the configuration, also check TMG configuratio, I was wondering if it can not be wrong settings on network access rule, I tried to restart this host - no result, ... network was still unavailable.
After about a hour I found the resolutuion:
On my second Hyper-V node Disable / Enable Local Area Connection network adapter, connected to Hyper-V LAN in Network Connections control panel!
Hope this will help to somebody ;)
Marian, just trying to help you

Resolutuion:
On affected Hyper-V node Disable / Enable Local Area Connection network adapter, connected to Hyper-V LAN in Network Connections control panel
I guess, sometnig flush on network configuration and / or some combination with network adapter driver
Marian, just trying to help you

Very Strange Network Issue With Two Guests on 2012 R2 Hyper-V Failover Cluster

Hi all. We're having a odd issue with two guests on our 2012 R2 failover cluster.
In a nutshell, if we shutdown a particular server (I'll call it Server A) another totally different server (Server B) on the same node loses it's network connectivity to the domain. If we start server A back up, network connectivity returns on server B.
At first I thought server A might be running a service that was somehow linked to server B, so I decided to disable server A's NIC. Interestingly, that had no affect on server B's connectivity.
The next step I tried was pausing server A and again, no adverse affect on server B's connectivity.
Next step was to live migrate server A to another node. This action did
cause server B to lose its network connection.
One other clue is that if I ping server B from either of the Hyper-V hosts in the cluster, I never lose network connection to server B.
So I would suspect this is some network issue on the cluster, but I'm kind of at a loss where to go from here.
Has anyone seen this behavior before or does anyone have any troubleshooting suggestions I can try?
Thanks!
George Moore

Hi Sir,
I'v never seen this before .
>>Next step was to live migrate server A to another node. This action did
cause server B to lose its network connection.
They are connecting to same virtual switch ?
First please run cluster validation to check if there is any error .
If it is ok , please try the following items for troubleshooting :
1. shutdown serverA serverB
2. then add another virtual NIC for serverB
3. start server B check if the issue happens to both "old" and "new" virtual NIC .
In addition , you can live migrate both A and B to another node , then try to live migrate A to the original node .
If the issue persists , I would suggest you to remove that virtual switch on both nodes then re-create them .
Best Regards,
Elton Ji
If it is not the answer please unmark it to continue
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected] .

Failover Cluster Network Name Failed and Can't be Repaired

I have an issue that seem to be a different problem than any others have encountered.
I've scoured everything I can find and nothing has fixed my problem.
The problem starts with the common problem of the cluster network name failing on my 2 node server 2012 file server cluster. The computer object was still in AD and appeared to be fine so it was not the common problem of the object
getting deleted somehow. At the time, there was no other object with that name in the recycling bin, so I don't think it was mistakenly deleted and quickly recreated to cover any tracks, so to speak.
Following one guide, I tried to find the registry key that corresponded with the GUID of the object, but neither node in the cluster had it in its registry (which may be part of the problem).
Since it was in the failed state, I tried to do the repair on the object to no avail.
We run a "locked down" DC environment so all computer objects have to be pre-provisioned. They were all pre-provisioned successfully and successfully assigned during cluster creation. The cluster was running with no issues for a month
or so before this problem came up.
When I do a repair on the object while taking diagnostic logs the following 4609 error appears:
The action 'Repair' did not complete. - System.ApplicationException: An error occurred resetting the password for 'Cluster Name'. ---> System.ComponentModel.Win32Exception: Unknown error (0x80005000)
There appears to be a corresponding 4771 error with a failure code 0x18 that comes from the security log of the DC that states there was a Kerberos pre-authentication failure for the cluster network name object (Domain\Clustername$)
I believe this is what is causing the repair failure. All the information I found related to security error 4771 was either a bad credentials given for a user account or the fix was to reconnect the computer to the domain. I can't seem to find
a way to do this with the cluster network name. If there's a way please let me know.
I've tried a number of things, like resetting the object, disabling it, deleting and creating a new object with the same name, deleting that new object and recovering the original, etc...
Can anyone shed some light on what is going on and hopefully how to fix it other than rebuilding the cluster? I'm quite close to just tearing it down and building it back up but am hesitant because this cluster in currently in production...
Any help would be appreciated

Hi,
I don’t find out the similar issue with yours, base on my experience, the 4096 error
often caused by the CSV disk issue, and the 0x80005000 error some time caused by the repetitive computer object in OU. Please check the above related part or run the validate test then post the error information.
Although I do have a CSV, there doesn't seem to be any problems with it and it was running just fine for a month or so before the problem started. I double checked and there is no duplicate computer objects, maybe I don't understand what you mean by
repetitive, could you explain further?
The cluster validates successfully with a few warnings:
Validating cluster resource Name: DT-FileCluster.
This resource is marked with a state of 'Failed' instead of
'Online'. This failed state indicates that the resource had a problem either
coming online or had a failure while it was online. The event logs and cluster
logs may have information that is helpful in identifying the cause of the
failure.
- This is because the cluster name is in the failed state
Validating the service principal names for Name:
DT-FileCluster.
The network name Name: DT-FileCluster does not have a valid
value for the read-only property 'ObjectGUID'. To validate the service principal
name the read-only private property 'ObjectGuid' must have a valid value. To
correct this issue make sure that the network name has been brought online at
least once. If this does not correct this issue you will need to delete the
network name and re-create it.
- This is definitely related to the problem and the GUID probably got removed when we attempted a fix by resetting the object and trying the repair from the failover cluster manager.
The user running validate, does not have permissions to create
computer objects in the 'ad.unlv.edu' domain.
- This is correct, we run a restricted domain. I have a delegated OU that I can pre-provision accounts in. The account was pro-provisioned successfully and was at one point setup and working just fine.
There are no other errors nor warnings.

Server 2008 R2 Failover cluster network configuration

Hi
We have a customer with a Server 2008 R2 Hyper-V failover cluster. They have 2 cluster networks, "Cluster Network 1" and "Cluster Network 2".
"Cluster Network 1": NIC team on 172.16.1.0/24 for private cluster network communication
"Cluster Network 2": NIC team on 192.168.1.0/24 for production network communication
I can see that "Cluster Network 1" is configured to "Allow cluster network communication on this network" and "Allow clients to connect through this network".
If "Cluster Network 1" is ONLY for communication between the to cluster nodes then I assume the selection in "Allow clients to connect through this network" should be removed?
/Lasse

It will cause a lost network connection for any client that is accessing through that network. Those clients would need to reconnect.
Did you configure both IPs on the cluster resource name that clients are accessing? If you only configured the one you want, there should be no issue. If you configured both, then it is possible some clients might be connected via the private
network.
Another thing you should, and if you have already done this you will most likely not have issues at all, is that you should disable DNS registration on any network you do not want client access coming through. If the clients can only find the resource
through the DNS name registered, that is the way they will be coming in. In my clusters, which often have 7 or more NICs, there is only one with a published DNS record.
. : | : . : | : . tim

Hyper-V Failover Cluster Networking Configuration After Install

Hello All,
Is it possible to install hyper-v and failover or in other words create a hyper-v failover cluster and then configure the networking part of the solution later? As I am coming into
terms with the networking part of it, wanted to do it later after the install. Is it possible?
And from later configuration, I am trying to say, creation of NIC Team, Virtual NICs, VLAN tagging, etc.

Hi,
Failover cluster deployment requires network connectivity between cluster nodes. You can't create a cluster without properly configured TCP\IP on cluster nodes.
http://OpsMgr.ru/

Failover Cluster networking issue

Normally when configuring a SQL cluster you put the communication to the shared storage (usually a SAN) on a separate network, and so your config looks something like this (long live ms paint!):
So in this example the 192.168.100.0/28 subnet is used for cluster inter-communication (heartbeat) and for access to the shared storage. Access to the shared storage is kept completely isolated from the corporate network and everyone's happy.
On the corporate network side the cluster registers itself onto DNS on the 10.0.0.0/24 subnet and clients can resolver the cluster name and connect to it.
My configuration is slightly different though and I am having some problems with the networking side.
In my configuration my shared storage is a file server cluster with two nodes. So the "clients" of the file server cluster are the SQL servers themselves. As such, the network configuration should, as I see it, be something like this:
In this setup the SQL servers would still connect to the shared storage on a separate subnet, as per best practices, therefore keeping the cluster traffic separate from the corporate subnet.
However, for this to work the file server cluster IP address needs to be on the 192.168.100.0/28 subnet, and still be able to register on the DNS server on 10.0.0.0/24 subnet. Now this already involves setting up a lot more things than you would normally
on the cluster NICs, it is no longer just an IP address and a subnet mask, now you need a DNS server and a gateway, as well as ensuring that the DNS server is contactable from clients on the 192.168.100.0/28 subnet, meaning complete isolation is gone.
I can't find any best practices on how to get this done, and I don't think that the solution is to put this on a the cluster communication on the corporate network, nor to create a DNS server on the 192.168.100.0/28 subnet, so does someone have any ideas
how to get this done or how to improve the design of the setup?

Hi cogumel0,
In your case personal advice is you can add the additional NICs on SOFS computers and SQL cluster then make all this NIC at a same separate subnet such as 192.168.101.0/24,
disable the default settings with new added NICs: DNS register AND NetBios over TCPIP, then create a static DNS A record point to the new added NICs IP address.
Since the SQL on SMB storage only support the UNC path, we need create a another CAP On SOFS cluster (192.168.101.0/24 subnet CAP), after that we can create a static DNS A record
for this CAP and configure the SQL cluster access this CAP only.
The related information:
Install SQL Server with SMB Fileshare as a Storage Option
https://msdn.microsoft.com/en-us/library/hh759341.aspx?f=255&MSPPError=-2147217396
Using Multiple Client Access Points (CAP) in a Windows Server 2008 (R2) Failover Cluster
http://blogs.technet.com/b/askcore/archive/2010/08/24/using-multiple-client-access-points-cap-in-a-windows-server-2008-r2-failover-cluster.aspx
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

Failover Cluster Validation Report Error with IBM USB Remote NDIS Network device

We are setting up Microsoft Windows Server 2008 R2 Failover Cluster on IBM X3850 X5 and get errors in the Failover cluster Validation Report due to the IBM USB Remote NDIS Network Device is using APIPA adresses and both servers are using same APIPA-adresse.
How should I configure the Server and OS for the Failover cluster to be MS approved?
IBM don't recommend that i disable the Network device, but it is a possible solution!?!

What I did was use ipconfig /all to see the settings it is using and then when and set the ip setting on the NDIS driver to be that except I increment the last value by 1 for each node so that they do not have the same IP address. I ran the
cluster validation again and it came up clean and I have not experienced any issues yet. It does give warnings about it being an Automatic Private IP Address and should not be used, which is ok because we are not going to use it anyways.
Rich Baumet

Network Name Resource Availability - failover cluster error 1196 on Hyper-V 2012 R2 nodes

Hello,
We're getting this error in our even logs of our four node failover cluster, we tried deleting Host A record in DNS management, that did nothing.
Failover cluster event: 1196
"Cluster network name resource 'CAUCrgt8' failed registration of one or more associated DNS name(s) for the following reason: This operation returned because the timeout period expired.
Ensure that the network adapters associated with dependent IP address resources are configured with at least one accessible DNS server."
And this resource http://technet.microsoft.com/en-us/library/cc773529%28v=WS.10%29.aspx did not help in solving this.
Do you guys have any other suggestions we could try to resolve this error?

Hi Jonas,
Please offer us which platform server you are using, such as if you are using server 2012 please refer the following update first.
Recommended hotfixes and updates for Windows Server 2012-based Failover Clusters - http://support.microsoft.com/kb/2784261
If the update not work please ppply Full Control permissions for the Cluster Name Resources in the DNS console.
More detail information please refer the following article:
Windows Server 2008 Troubleshooting: Event ID 1196 — Microsoft-Windows-FailoverClustering - http://social.technet.microsoft.com/wiki/contents/articles/windows-server-2008-troubleshooting-event-id-1196-microsoft-windows-failoverclustering.aspx
DNS Registration with the Network Name Resource -
http://blogs.msdn.com/b/clustering/archive/2009/07/17/9836756.aspx
I’m glad to be of help to you!
We
are trying to better understand customer views on social support experience, so your participation in this
interview project would be greatly appreciated if you have time.
Thanks for helping make community forums a great place.

In Failover Cluster 2008 mailbox2 server network status Unavailable (down).

Hi
I am new here, & hope i can get some help for the below issue
let me keep it simple scenario
i have 2 mailbox server ( mbx01 & mbx02)
2 cashub Server ( cshb1-cshb2) all running on hyper-v. last week due to some maintenance in data center i have to bring down all the production environment, once the thing are fixed in DC , i started all the server and found out that my exchange node 2 database
are failed.
In exchange 2010 failover cluster node ( node2 ) is down network status unavailable. due to by exchange node2 database are failed.
also i cannot access the file share witness directory from any of the above server.
can any body assist me on this please
thank you

Make sure both the DAG members have access to the witness directory. Check the location and make sure you have access. Open the DAG properties from Node2 and try to update the witness server and witness directory. Check the firewall/antivirus of the witness
server. Try disabling antivirus and firewall. If witness server is not online your databases will go offline. Pleae check
this
Get-DatabaseAvailabilityGroup -Identity DAG -Status | fl name,servers,witnessserver,witnessdirectory,alternatewitnessserver,alternatewitnessdirectory,operationalservers,primaryactivemanager,witnessshareinuse
Thanks, MAS
Please mark as helpful if you find my comment helpful or as an answer if it does answer your question. That will encourage me - and others - to take time out to help you.

Failover Cluster - Hyperv Networking

Similar Messages

Maybe you are looking for