Quantcast
Channel: High Availability (Clustering) forum
Viewing all 6672 articles
Browse latest View live

Cluster file server resource 'FileServer-(NAME)(Database Disk)' failed a health check

$
0
0

Any ideas on why a Fileserver keeps going offline on only 1 node. Even tried swapping the server and its still failing. This is a windows 2008r2 cluster

Cluster file server resource 'FileServer-(NAME)(Database Disk)' failed a health check. This was because some of its shared folders were inaccessible. Verify that the folders are accessible from clients. Additionally, confirm the state of the Server service on this cluster node using Server Manager and look for other events related to the Server


Introducing Server 2012 R2 into a Server 2008 R2 Hyper-V failover-cluster

$
0
0

Hello,

      I have a couple Server 2008 R2 Hyper-V Host clusters with many VM's running on them. Is there a way I can introduce a Server 2012 R2 Hyper-V host server into each cluster, migrate the VM's to the Server 2012 R2 system and then be able to live migrate the VM's to another Server 2012 R2 Hyper-V host in another cluster? Thanks

Pat


Pat

Creating a cluster question

$
0
0

I am trying to create a High Availability Cluster on Serve 2012r2 that will run Remote Desktop Services i.e. RemoteApps.  The idea being that if one server goes down the second one will take over.  I have created a cluster with 2 nodes, the two nodes in the cluster are virtual servers on two separate physical servers running Server 2012r2 with Hyper-V. From what I can tell the cluster is setup properly (server manager>local server recognizes them as being apart of the cluster), but I'm unclear whether these two nodes are the High Availability cluster I require, or if I should have made the physical servers that host Hyper-v the nodes in the cluster.  I would think that once these 2 nodes are in a cluster if I make a change to one node i.e. install a feature that the other node would be automatically updated to match, and should one node shutdown the other node takes over.  Doesn't seem to be the case for me, which makes me think I shouldn't have used the two virtual servers as nodes. 

Should I have created the cluster between the two physical servers instead?  Then created a virtual machine from that cluster?

My only other experience with clustering is with Synology, so I'm basing a lot of my assumption on how Synology clusters their devices.

Any help is greatly appreciated.

Brendon

Cluster Disk stuck in "Online Pending"

$
0
0

I am currently seeing this under my Storage in the Failover Cluster Manager on Server 2012 r2....
"Cluster Disk 2" is stuck in an "Online Pending" state. The thing is I don't have any disk that would be claiming this role.

When I try and look at the properties of this disk I get a message: "operation has failed..... unable to cast object of type 'MS.Internal.ServerClusters.Cluster' to type 'MS.Internal.ServerClusters.ClusterResource'. " or sometime the MMC crashes with an unhandled exception. If I try and remove it in the Failover Cluster MMC, it fails with "The file cannot be opened because it is in the process of being deleted. Error Code: 0x8007012f"

If I try and remove it with cmdlets in PowerShell, ' Remove-ClusterResource "Cluster Disk 2", no result because the resource doesn't exist. 'Get-ClusterResource' shows no resource related to the ghost disk.

Any thoughts on what may be causing this ghost disk to be showing up as available storage, or any resolutions to removing it.

How to move cluster Hyper-V computer object to another ou in AD

$
0
0

2 Hyper-V hosts (2012 R2 DC) in Cluster config

Cluster got created BEFORE Hyper-V hosts AD Computer Objects got moved to a proper desired OU

Is there a way to move Hyper-V host AD objects now?

Will Cluster need to be re-created?

Thanks

Seb


How to size a Scale-out File Server

$
0
0

Hi,

We are looking to implement a 2-node 2012 R2 Scale-out File Server cluster (using SAS JBOD enclosure) for the primary purpose of storing the VHD files that will be accessed by a 4-node 2012 R2 Hyper-V cluster using 10 gigabit Ethernet (no RDMA).  Our environment can be characterised as having a large number of mostly idle VMs that experience sporadic, low intensity use (this is *not* a VDI environment).  We have 2 questions.

1) To what extent is RAM a consideration for the SoFS servers?  We can't find any documentation to suggest that there are benefits to be gained by having more RAM in the SoFS servers but we don't know if we should go with 8/16/32/64+ GB RAM in each of the nodes.

2) With the need to keep costs down, we don't think RDMA / SMB-Direct NICs are going to be within our reach.  Should we however look to have 2 * dual-port 10 Gbps NICs in both the SoFS & Hyper-V boxes?

Problem with Clustered DFS Namespace

$
0
0

We have a Microsoft cluster running on 2 Server Enterprise 2008R2 Servers with the FileServices Roles (including DFS roles).  We have 3 Standalone DFS namespaces (roots) which have been up and running for a couple of months.  Users were complaining about performance so we added the DfsDnsConfig registry entry to force the FQDN format in the namespace (KB244380). 

Although it doesn't say to do so in the KB Article, I found several threads that said you also need to delete and recreate the namespaces afterwards.  This is where I got into the problem.

I deleted one of my namespaces from the Failover Cluster Manager utility.  I then recreated the namespace.  While it works, the share was empty.  This is because by default it placed the namespace in DFSRoots and we have our namespaces in DFSroot (no trailing "s").

So I am trying to delete the new namespace in DFSRoots and create it in the DFSRoot folder, but I get the error listed in the title.  This is what I've tried so far to resolve this:

1. dfsutil to remove the namespace and it fails saying the command is not supported in a cluster environment.  Fair enough.

2. I tried to delete the share (using "Share and "), but it fails saying the shared folder is a DFS namespace root.

3. I tried to find an option to add the namespace to the resource group (using "Failover Cluster Manager") but I can't find the appropriate option.  Maybe it cant be done from the "Failover Cluster Manager" unless you are created a new one, I think.

4. Of course I tried to delete the namespace (using the "DFS Management" utility) and that's where I get the error in the Title of this post.

5. I deleted the registry entry for the namespace under hklm\software\Microsoft\dfs\roots\standalone.  I did this on both Fileserver nodes in the cluster.  However then all the utilities complained that they couldn't find the namespace and I couldn't do anything with the specific namespace.  So I put the registry key back in.

At this point I don't know what else to try to delete this namespace properly.  Any assistance is appreciated.

Error Code 0x80071398

$
0
0

I just added the third node to my cluster and when I am trying to move the ownership of a cluster shared volume to it I am getting the following error

0x80071398 cluster shared volume error: the operation failed because either the specified cluster node is not the owner of the group, or th enode is not a possible owner of the group.

Not sure what this means. The processor is a bit different and I am able to move VMs to it but not the CSV ownership.

Thanks,


- Gymmbo

How to Find the Latest Version of Cluster Binary Files available at Microsoft website

$
0
0

How we can find the latest version of Cluster binary files available for download at Microsoft Website and which Cluster Binaries should be update to make the Cluster services stable healthy.


Add 2012 R2 node to an existing 2012 cluster

$
0
0

hello all. I currently have a 4 node 2012 cluster (nodes 1-4). I have 4 more new nodes loaded with 2012 R2 (nodes 5-8) . I would like to add nodes 5-8 into the existing 2012 cluster housing nodes 1-4, one node at a time, once nodes 5-8 have been added, I want to remove the existing nodes 1-4, one at a time, reload them with 2012 R2 then re-add them to the cluster. Is this scenario possible?

The existing cluster is a Hyper-V cluster only.

Extend CSV size after extending Lun

$
0
0

I have a Hyper-v cluster with Netapp Storage. After enlarging the LUN on the netapp is ran the diskpart and did an extend. This is showing up in diskmanager but the CSV stays the same size. How can i extend that.


Server 2012 R2 cluster error "An item with the same key has already been added"

$
0
0

Using the Configure Role option in Failover Cluster Manager on Server 2012 R2.  After selecting Virtual machines from the list, upon enumeration I receive the following error:

"An item with the same key has already been added"

I've looked at other solutions to this issue but they are unrelated.  Some mention firewall configuration and others network card guid on VM.  I can create a blank VM (no operating system and no NIC) with the same results.

This error appears even if there isn't a non-highly available VM to be converted to highly available (which i've run in the past and it will just enumerate nothing).

Tied to this error is the fact that when I do try to create a highly available virtual machine, the wizard completes but the virtual machine is created as non-highly available with no error given.  This is when I tried the Configure Role option and get the error listed above (assuming both are related to each other somehow).


Trying to setup a redundant server for server 2012

$
0
0

have some questions  regarding creating a backup for an all in one server. The server has active directory, DNS, the file server and everything on it. I'm trying to create a redundancy setup in case of failure. So I was reading about failover clusters and this seem to be what I need to do. I'm just a little bit confused. What is the difference between using hyper V and using clusters?

When I create a cluster and add servers to it, what exactly happens? For instance simplest case I have the main server with all the data. Now I bring in another machine with nothing on it. I install windows server 2012 on it and add it and the other computer to a cluster. Does the data from the main server automatically get copied onto all the servers that are part of this cluster? At this point if one server fails will the other one take over?

Any help is greatly appreciated.

-FlipFlop

Cluster Aware Updating Scheduling

$
0
0

I am having an issue with Cluster Aware Updating (CAU) on Server 2012 and Server 2012 R2. If I schedule self-updating and specify a time other than 03:00 (e.g. 07:00) in the wizard, when I get to the end of the wizard the confirmation page shows the schedule to be 03:00. if I click apply then the schedule does appear to be set to 03:00.The same behaviour occurs whether I am setting up CAU for the first time or editing an existing configuration. Thus it is not possible to schedule cluster aware updating for any time other than 03:00.

I am assuming that this is a bug, although I am open to suggestions if anyone else can think of a possible cause. I haven't found this mentioned anywhere online and I have been to MS Connect and Server 2012 is not listed as open for bugs. Has anybody else been able to reproduce this? Any idea how to report a bug if connect is closed?

I have two clusters, one on Server 2012 and one on 2012 R2 and I can reproduce on both:

OS Name    Microsoft Windows Server 2012 Datacenter
Version    6.2.9200 Build 9200

OS Name    Microsoft Windows Server 2012 R2 Datacenter
Version    6.3.9600 Build 9600

I am happy to supply further details if anyone is willing to help.

Thanks


NLB Manager donot show the other host

$
0
0

Hello

a few months back, I installed and configured Windows NLB on a couple of exchange CAS servers and  everything seems to be working fine (still working fine). However, the other day when I opened NLB manger on each servers to find that one of the HOST is missing from the cluster. If I open NLB on server1, Server2 is not listed and viceversa. I tried to refresh the screen to no avail. I tried to re-add the missing host on to the cluster I get " The specified host is already part of this cluster". NLB is running in multicasrt mode seems to be working fine, i just cant see both servers. Is there any way I can rectify this?

I am running windows 2008R2 Sp1. (it could see it fine in the past not now)

hakim


Choosing the correct clustering method

$
0
0
Hi, I currently have a small 3 server environment (win 2012), 1 PDC, and 2 Servers running hyper-v. I have 8 or so hyper v machines on one of the servers and using hyper-v replica to replicate all of them to the other server. I woud like to upgrade this to something that will provide hot migration/failover for the VM's. I was considering having a storage cluster with 2 machines for storage and a VM cluster with 2 machines for migration. My confusion is what to cluster? Do I cluster the physical machines, the VM's or both? Note SQL server is running on one of the VM's.

Lee

Cluster log and etl files

$
0
0

We have a windows 2008 R2 cluster.

A few days ago, we had issues with this cluster.

I openend the cluster log, hoping to find the cause of the problem. But the last entry in the cluster log was dated 14 december 2013. Also the modified date of the failoverclustering.etl files is 24 december 2013. This is also the last time the cluster was restarted.

(Yes, we are a little behind with the MS security patches)

If i have read some articles correct, then the Windows Event Tracing (ETW) process on each node should constantly writes to etl files. Correct?

If that's the case, what could cause this problem?

In windows 2003, the cluster.log was automatically generated. Do i have to create the cluster.log manually in W2kR2?

Thanx.

Changing Node Name, Cluster Name and SQL Virtual Network Name

$
0
0

I plan to rename 2 Cluster Node names (2-Node Active/Passive Cluster in SQL Server 2008 and SQL Server 2008), Cluster Name and SQL Server Virtual Network Name.

I see few articles here and there with pieces of information, but is it possible to have actual steps and pre-req on how to do it

1. Will I need New IP Address for new names or I can MAP 2 names to 1 IP Address?

2. What should be the chronological order to complete this name change process?

3. Since the SQL Is already installed, will this in anyway affect its functionality?

Thanks in advance!!

Inquiry about update KB2878635

$
0
0

Hello, i am wondering if the compound update KB2878635 is strictly concerning Windows 2012 or if a Windows 2012 R2 package will be available, because we are confronted to deadlocks in the Resource Hosting Subsystem (RHS) process, and CSV failures" (the only difference is that in our testing environment we do not have backups)

So far we have installed all updates indicated in http://support.microsoft.com/kb/2920151/en-us

and specifically the update KB 2913695

and followed the procedure to disable ODX.

Because it addresses exactly our issue, but fails to resolve the problem (CSV stuck in pause state during SAN failover)

Bottom story, we are investigating other possible updates. If anyone is knowledgeable on future updates that may go public in the next weeks, i am eager to know...

I am too following this thread but didn't finish yet to process all info...

http://social.technet.microsoft.com/Forums/en-US/604409df-ada1-47d1-bdfb-3f938cde0b59/dpm-2012-sp1-beta-causing-server-2012-hyperv-cluster-hang-iscsi-problems?forum=dpmhypervbackup

Thanks.





Server 2012 Failover cluster. Make two VMs stay on the same node

$
0
0
We have a unique situation where i need two machines to stay on the same node. Its a 4 node cluster with 30+ resources but i want to make sure two boxes are ALWAYS on the same now. If one migrates to another node the second needs to follow. Is there a way to do this? 
Viewing all 6672 articles
Browse latest View live


<script src="https://jsc.adskeeper.com/r/s/rssing.com.1596347.js" async> </script>