Changing Cluster node hostname

Dear all
Can i change hostname of box in cluster enviroment
Regards
DR

According to SysAdmin magazine (it's not on there site but in the May 2006 edition) you can change the hostname of cluster hostnames by performing the following:
Reboot cluster nodes into non-cluster node (reboot -- -x)
Change the hostname of the system (nodenames, hosts etc)
Change hostname on all nodes within the files under /erc/cluster/ccr
Regenerate the checksums for each file changed using ccradm -I /etc/cluster/ccr/FILENAME -0Reboot every cluster node into the cluster.
I have no idea if this works but if it does then let me know.

Similar Messages

Change cluster node's hostname

Just install a 4 node RAC cluster with 11gR2 infrastructure (cluster + asm), 10g RAC and 11g RAC database. Then customer told us to change the cluster node IP and hostname.
According to metalink (220970.1), it requires to reinstall the cluster.
Wondering is there any alternate way to rename cluster node's IP/hostname?

Hi user5544520,
as far as I know it is not supported to change your hostname with CRS.
You will have to remove the node from the cluster.
Change hostname and do other necessary changes.
Add node to the cluster.
There are lots of documentation available.
Look at the following:
http://www.pythian.com/news/482/changing-hostnames-in-oracle-rac/In above mentioned blog they say:
If you are brave enough, there is another way to do this.
It’s not described anywhere on the Metalink, but there are no major hacks needed to implement it.
The idea is to simply re-run the configuration of CRS (including re-formatting OCR and voting disks) and re-create the CRS resources after that.
Obviously, this is not an online operation and the whole cluster is down for the duration of rename.Hope this helps.
Edited by: user11150436 on Oct 29, 2010 4:09 PM

Change of domain for the cluster nodes

Hi,
We need to change our existing domain i.e. NT domain to windows 2003 domain for the SAP production server cluster nodes.
There are 2 nodes. They are in active active mode.
Windows 2000 advanced server is installed in the nodes.
Can anybody tell us that during the change of the domain what else we need to take care or what should be correct procedure for this so that database & application does not have any impact
Eagerly waiting for the reply
With best regards
Joydeep

I would NOT do that.
What immediately comes to my mind is:
- users need to be recreated in the new domain
- filesystem owners and permissions of all SAP and database directories must be changed
- permissions on registry keys must be changed
- owner/permissions of the files in the cluster filesystem must be changed
There is no easy way of doing this. Depending on the database that is used more things are necessary. If you don't exactly know, where which application has files, it will certainly be troublesome.
The safest way would be to use a different hardware and do a homogeneous system copy by reinstalling the cluster in the new domain.
Markus

Cluster node reboots repeatedly

We have 2 node 10.1.0.3 cluster setup. We had a problem with a HBA card for the fibre channel to SAN and after replacing it, one of the cluster nodes keeps rebooting itself right after the Cluster processes startup.
We have had this issue once before and Support suggested the following.. Howevere the same solution is not working this time around.. Any ideas?
Check output of the unix command hostname is node1
Please rename cssnorun file in /etc/oracle/scls_scr/node1/root directory. Please issue "touch /etc/oracle/scls_scr/node1/root/crsdboot" and also change the permission and ownership of the file to match that of the node 2. Please check if there is any differences in permission, ownership, and the group for any files or directory structure under /etc/oracle between two nodes.
Please reboot node 1 after this change and see if you run into the same problem.
Please check if there is any /tmp/crsctl* files.

Well especially if you are Linux RH4 the new controler card will have cause the device names to change. Check that out. It could be that you are no longer seeing you vote and crs partitions. This can happen on other operating systems if the devices now have a new name because the controller card has changed.
For Linux try the Man pages on udev and search for udev on OTN
Regards

SCVMM losing connection to cluster nodes

Hey guys'n girls, I hope this is the right forum for this question. I already opened a ticket at MS support as well because it's impacting our production environment indirectly, but even after a week there's been no contact. Losing faith in MS support there
The problem we're having is that scvmm is that a host enters the 'needs attention' state, with a winrm error 0x80338126. I guess it has something to do with the network or with Kerberos, and I've found some info on it, but I still haven't been able to solve
it. Do you guys have any ideas?
Problem summary:
We are seeing an issue on our new hyper-v platform. The platform should have been in production last week, but this issue is delaying our project as we can't seem to get it stable.
The problem we are experiencing is that SCVMM loses the connection to some of the Hyper-V nodes. Not one
specific node. Last week it happened to two nodes, and today it happened to another node. I see issues with WinRM, and I expect something to do with kerberos. See the bottom of this post for background details and software versions.
The host gets the status 'needs attention', and if you look at the status of the machine, WinRM gives an error. The error is:
Error (2916)
VMM is unable to complete the request. The connection to the agent cc1-hyp-10.domaincloud1.local was lost.
WinRM: URL: [http://cc1-hyp-10.domaincloud1.local:5985], Verb: [ENUMERATE], Resource: [http://schemas.microsoft.com/wbem/wsman/1/wmi/root/cimv2/Win32_Service], Filter: [select * from Win32_Service where Name="WinRM"]
Unknown error (0x80338126)
Recommended Action
Ensure that the Windows Remote Management (WinRM) service and the VMM agent are installed and running and that a firewall is not blocking HTTP/HTTPS traffic. Ensure that VMM server is able to communicate with cc1-hyp-10.domaincloud1.local over WinRM by successfully
running the following command:
winrm id –r:cc1-hyp-10.domaincloud1.local
This
problem can also be caused by a Windows Management Instrumentation (WMI) service crash. If the server is running Windows Server 2008 R2, ensure that KB 982293 (http://support.microsoft.com/kb/982293)
is installed on it.
If the error persists, restart cc1-hyp-10.domaincloud1.local and then try the operation again. /nRefer to
http://support.microsoft.com/kb/2742275 for more details.
Doing a simple test from the VMM server to the problematic cluster node shows this error:
PS C:\> hostname
CC1-VMM-01
PS C:\> winrm id -r:cc1-hyp-10.domaincloud1.local
WSManFault
    Message = WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this
computer. By default, the WinRM firewall exception for public profiles limits access to remote computers within the same local subnet.
Error number: -2144108250 0x80338126
WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this computer. By default, the WinRM
firewall exception for public profiles limits access to remote computers within the same local subnet.
I CAN connect from other hosts to this problematic cluster node:
PS C:\> hostname
CC1-HYP-16
PS C:\> winrm id -r:cc1-hyp-10.domaincloud1.local
IdentifyResponse
    ProtocolVersion =
http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd
    ProductVendor = Microsoft Corporation
    ProductVersion = OS: 6.3.9600 SP: 0.0 Stack: 3.0
    SecurityProfiles
        SecurityProfileName =
http://schemas.dmtf.org/wbem/wsman/1/wsman/secprofile/http/spnego-kerberos
And I can connect from the vmm server to all other cluster nodes:
PS C:\> hostname
CC1-VMM-01
PS C:\> winrm id -r:cc1-hyp-11.domaincloud1.local
IdentifyResponse
    ProtocolVersion =
http://schemas.dmtf.org/wbem/wsman/1/wsman.xsd
    ProductVendor = Microsoft Corporation
    ProductVersion = OS: 6.3.9600 SP: 0.0 Stack: 3.0
    SecurityProfiles
        SecurityProfileName =
http://schemas.dmtf.org/wbem/wsman/1/wsman/secprofile/http/spnego-kerberos
So at this point only the test from the cc1-vmm-01 to cc1-hyp-10 seems to be problematic.
I followed the steps in the page
https://support.microsoft.com/kb/2742275 (which is referred to above). I tried the VMMCA, but it can't really get it working the way I want, or it seems to give outdated recommendations.
I tried checking for duplicate SPN's by running setspn -x on affected machines. No results (although I do not understand
what an SPN is or how it works). I rebuilt the performance counters.
It tried setting 'sc config winrm type= own' as described in [http://blinditandnetworkadmin.blogspot.nl/2012/08/kb-how-to-troubleshoot-needs-attention.html].
If I reboot this cc1-hyp-10 machine, it will start working perfectly again. However, then I can't troubleshoot the issue, and it will happen again.
I want this problem to be solved, so vmm never loses connection to the hypervisors it's managing again!
Background information:
We've set up a platform with Hyper-V to run a VM workload. The platform consists of the following hardware:
2 Dell R620's with 32GB of RAM, running hyper-v to virtualize the cloud management layer (DC's, VMM, SQL). These machines are called cc1-hyp-01 and cc1-hyp-02. They run the management vm's like cc1-dc-01/02, cc1-sql-01, cc1-vmm-01, etc. The names are self-explanatory.
The VMM machine is NOT clustered.
8 Dell M620 blades with 320GB of RAM, running hyper-v to virtualize the customer workload. The machines are
called cc1-hyp-10 until cc1-hyp-17. They are in a cluster.
2 Equallogic units form a SAN (premium storage), and we have a Dell R515 running iscsi target (budget storage).
We have Dell Force10 switches and Cisco C3750X switches to connect everything together (mostly 10GB links).
All hosts run Windows Server 2012R2 Datacenter edition. The VMM server runs System Center Virtual Machine Manage 2012 R2.
All the latest Windows updates are installed on every host. There are no firewalls between any host (vmm and hypervisors) at this level. Windows firewalls are all disabled. No antivirus software is installed, no symantec software is installed.
The only non-standard software that is installed is the Dell Host Integration Tools 4.7.1, Dell Openmanage Server Administrator, and some small stuff like 7-zip, bginfo, net-snap, etc.
The SCVMM service is running under the domain account DOMAINCLOUD1\scvmm. This machine is in the local administrators group of each cluster node.
On top of this cloud layer we're running the tenant layer with a lot of vm's for a specific customer (although they are all off now).

I think I found the culprit, after an hour of analyzing wireshark dumps I found the vmm had jumbo frames enabled on the management interface to the hosts (and the underlying infrastructure does not).. Now my winrm commands started working again.

CUA: One or more errors occurred while checking the status of Windows Firewall on the cluster nodes

Cluster with 2 hosts 2012 R2
Scheduled CAU fails with:
CAU run {4EFE116C-AB49-456D-8EED-F7EDC764DA49} on cluster Cluster1 failed. Error Message:One or more errors occurred while checking the status of Windows Firewall on the cluster nodes. Review the errors for more information on how to resolve the problems.
Error Code:-2146233088 Stack:   at MS.Internal.ClusterAwareUpdating.Util.<CheckFirewallsAsync>d__3a.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.ClusterAwareUpdating.Commands.InvokeCauRunCommand.<_ProcessCluster>d__78.MoveNext()
If I run CAU "Analyze Readiness" ALL comes as PASS
If I run CUA by hand on same hosts with NO change to the system (not even reboot) it finishes OK
Anybody any ideas?
Thanks
Seb

Hi,
In some case if you disabled the connection in Windows firewall inbound of
"Cluster aware updating" service it will can’t use the CAU.
More information:
Starting with Cluster-Aware Updating: Self-Updating
http://blogs.technet.com/b/filecab/archive/2012/05/17/starting-with-cluster-aware-updating-self-updating.aspx
What is Cluster Aware Updating in Windows Server 2012? (Part 1)
http://blogs.technet.com/b/mspfe/archive/2013/02/06/what-is-cluster-aware-updating-in-windows-server-2012.aspx
Cluster-Aware Updating Overview
http://technet.microsoft.com/en-us/library/hh831694.aspx
Hope this helps.
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are trying to better understand customer views on social support experience, so your participation in this
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Cluster node (1 out of 6) is in error for a file channel - SAP XI

Hi,
In one of a sender file channel for an interface, one java node out of 6 configured ones failed. The error message says "Login Incorrect" while the other cluster nodes are polling properly. I have tried to update the password in the channel's configuration in Integration Directory and activated it. This doesnt help. Please advice!
Thanks in advance!
Regards,
Kumaran

Hello Kumaran,
The status of the file adapter is not reflected properly but this should not have an impact. No message might have arrived at that node yet. Once it receives a message for processing, the status will be changed.
Anil

How to set time on cluster nodes

We have setup of two cluster node. Both having the same time runing . Now i have to change this time to 15-20 mnts. backward on both nodes. I want to know whether online with date command can set the date on indivisual nodes or any precautions need to take ?
Thanks in advance
sanjay

use ntp: network time protocol. set up ntpd correctly to get time from external ntp server that is open to the public, or a ntp pool

How to change SIA Node Name on RHEL Server?

We recently installed CABI/Business Objects Enterprise XI Release 3 SP5 on RHEL Server.
When logging into CMC we noticed that Server Name and Host Name are not the same.
What is the impact?
How do we correct the Server Name to be the same as Host Name?

Hello Elliot,
Refer here :
1310352 - How to change hostname of BusinessObjects Enterprise (BOE)
XI 3.1 Server
1264017 - How to Change cluster name in Business object enterprise
XI 3.1 on UNIX operating system ?
This may help.
Cheers,
Fadoua.

Why the non-cluster SQL Server appeared in the cluster nodes list

1, I install the node rs6 standalone, Why it appeared in the cluster node list by inquiry the dmv?
2, how to removed the rs6 from the cluster node list ?
by "set -clusterownernode -resource "XXXASQL" -owners NODE1,NODE2"?
But how to find the resource name? I tried to use window cluster name, SQL cluster name, and SQL role name , All of them say failed to get the cluster object.
3,how to set the owers to {}, I try below, but failed.

IMHO, sys.dm_os_cluster_nodes DMV is associated with the SQL Server
Operating System (SQLOS), sys.dm_os_cluster_nodes returns one row for each node in the failover cluster configuration.
As you are running standalone instance on cluster I am assuming this information is being picked from
OS and not from RS6 SQL instance.
As you have confirmed Is_cluster is false and if you don’t see RS6 instance in failover cluster manager I don’t think anything damaged here. Everything looking as expected, dont change owner node as its standalone instance.

Question about cluster node NodeWeight property

Hi,
I have a three nodes (A/B/C) windows 2008 r2 sp1 cluster testCluster, and installed KB2494036 for three nodes,suppose Node A is a active node.
I configured node C's NodeWeight property to 0, and node A and node B keep default (NodeWeight=1). I also added a shared disk Q for cluster quorum.
So i want to know if node C and Node B are down , is the windows cluster testCluster down as lost of quorum or keep up?
At the first i thought testCluster should keep up , because the cluster has 2 votes (node A and quorum), node B is down, node C doesn't join voting. But after testing, testCluster was down as lost of quorum.
So anybody konw the reason,thanks.

Hello mark.gao,
Let me see if I understand correctly your steps, so I can think that if you create your cluster with three nodes at the beginning your quorum model should be "Node Majority", then you have three votes one per each node.
Then was removed the vote for Node "C" and added a disk to be witness for cluster quorum, at this point we have two out of three votes from the original configuration on "Node Majority"
Question:
At some point you changed the quorum model to be "Node and Disk Majority"???
Maybe this is the issue, you are stuck on "Node Majority" and when "B" and "C" nodes are down we have only one vote from node "A" therefore there is no quorum to keep the service online.
On 2012 we have the awesome option to configure a Dynamic Quorum:
Dynamic quorum management
In Windows Server 2012, as an advanced quorum configuration option, you can choose to enable dynamic quorum management by cluster. When this option is enabled, the cluster dynamically manages
the vote assignment to nodes, based on the state of each node. Votes are automatically removed from nodes that leave active cluster membership, and a vote is automatically assigned when a node rejoins the cluster. By default, dynamic quorum management is enabled.
Note
With dynamic quorum management, the cluster quorum majority is determined by the set of nodes that are active members of the cluster at any time. This is an important distinction from the cluster quorum in Windows Server 2008 R2, where the quorum
majority is fixed, based on the initial cluster configuration.
With dynamic quorum management, it is also possible for a cluster to run on the last surviving cluster node. By dynamically adjusting the quorum majority requirement, the cluster can sustain
sequential node shutdowns to a single node.
The cluster-assigned dynamic vote of a node can be verified with the DynamicWeight common property of the cluster node by using the Get-ClusterNodeWindows
PowerShell cmdlet. A value of 0 indicates that the node does not have a quorum vote. A value of 1 indicates that the node has a quorum vote.
The vote assignment for all cluster nodes can be verified by using the Validate Cluster Quorum validation test.
Additional considerations
Dynamic quorum management does not allow the cluster to sustain a simultaneous failure of a majority of voting members. To continue running, the cluster must always have a quorum majority at the time of a node shutdown or failure.
If you have explicitly removed the vote of a node, the cluster cannot dynamically add or remove that vote.
Configure and Manage the Quorum in a Windows Server 2012 Failover Cluster
https://technet.microsoft.com/en-us/library/jj612870.aspx#BKMK_dynamic
Hope this info help you to reach your goal. :D
5ALU2 !

SQL 2008 R2 Cluster | change Cluster Disks

Hello,
We have a SQL cluster (for SharePoint 2010) consists of two nodes Windows server 2008 R2 & SQL 2008 r2.
The SQL cluster have MSDTC (Clustered) & SQL services, with total four disks:
Quorum Disk
MSDTC Disk
Databases disk
Logs disk.
Now the old SAN will be decommissioned and new LUNs have added to replace the our disks above. I managed to change Quorum & MSDTC. I used the below robocopy command to copy databases and logs with the same folder structure and permissions:
robocopy t:\ l:\ /E /MIR /SEC /COPYALL /V
I stopped SQL services then swapped drive letters , when I start SQL services it starts without problems (using the new Disks).
But the issue is when I connect to SQL management studio, all databases are in suspect mode. I know there some SQL query to be run against each database , but this a production environment and I don't want to mess with it.
Is there any other way to change cluster disks of SQL cluster? or use the above method without getting into suspect mode?
Thanks, Shehatovich

Hello, Shehatovich
I you have copied the files while there were still online, that might have been the cause 'suspect' state of your databases.
I would suggest you to follow the steps:
Add the new disks to cluster, with validation in every single Cluster node (then cluster will be able to get the signature of the disks)
Stop SQL Server service.
Copy the MDF and LDF to the new disks,
use the Detach and attach Method. (http://msdn.microsoft.com/en-us/library/ms187858.aspx)
After check tha your databases are online and consistent.
Stop SQL Server service again and remove the disks
Hope it may help you...
Regards,
Edvaldo Castro
Edvaldo Castro http://edvaldocastro.com MCITP Database Administrator on SQL Server® 2008 MCITP Database Administrator on SQL Server® 2005 MCTS: SQL Server® 2008 MCTS: SQL Server® 2005 MCT: Microsoft Certified Trainer MTA: Microsoft Technology Associate
MTAC – Microsoft Technical Audience Contributor CCSQLA – Cambridge Certified SQL Associate TOEIC – Test of English for International Communication

Sun cluster Node ID Order

I installed Sun cluster 3.1 and it all seemed successful. However, the node ID and the private hostnames seemed twisted. "comdb1" has the node ID of 2 and "comdb2" has the node ID of 1. I installed the software from "comdb1", so it should have used that as node 1, right? I pasted below some info from 'scconf -p'
Cluster node name: comdb1
Node ID: 2
Node enabled: yes
Node private hostname: clusternode2-priv
Node quorum vote count: 1
Node reservation key: 0x4472697D00000002
Node transport adapters: ce4 ce1
Cluster node name: comdb2
Node ID: 1
Node enabled: yes
Node private hostname: clusternode1-priv
Node quorum vote count: 1
Node reservation key: 0x4472697D00000001
Node transport adapters: ce4 ce1
Thank you in advance.

Consequently, when installing Oracle 10g RAC, the database name "db1" is created on node2 and "db2" is created on node1 since it relies on the private node name and the node ID. Otherwise I wouldn't bother with how the cluster software names its node ID.
Thanks again,
Luke

JNDI Lookup for multiple server instances with multiple cluster nodes

Hi Experts,
I need help with retreiving log files for multiple server instances with multiple cluster nodes. The system is Netweaver 7.01.
There are 3 server instances all instances with 3 cluster nodes.
There are EJB session beans deployed on them to retreive the log information for each server node.
In the session bean there is a method:
public List getServers() {
List servers = new ArrayList();
ClassLoader saveLoader = Thread.currentThread().getContextClassLoader();
try {
   Properties prop = new Properties();
   prop.setProperty(Context.INITIAL_CONTEXT_FACTORY, "com.sap.engine.services.jndi.InitialContextFactoryImpl");
   prop.put(Context.SECURITY_AUTHENTICATION, "none");
   Thread.currentThread().setContextClassLoader((com.sap.engine.services.adminadapter.interfaces.RemoteAdminInterface.class).getClassLoader());
   InitialContext mInitialContext = new InitialContext(prop);
   RemoteAdminInterface rai = (RemoteAdminInterface) mInitialContext.lookup("adminadapter");
   ClusterAdministrator cadm = rai.getClusterAdministrator();
   ConvenienceEngineAdministrator cea = rai.getConvenienceEngineAdministrator();
   int nodeId[] = cea.getClusterNodeIds();
   int dispatcherId = 0;
   String dispatcherIP = null;
   String p4Port = null;
   for (int i = 0; i < nodeId.length; i++) {
    if (cea.getClusterNodeType(nodeId[i]) != 1)
     continue;
    Properties dispatcherProp = cadm.getNodeInfo(nodeId[i]);
    dispatcherIP = dispatcherProp.getProperty("Host", "localhost");
    p4Port = cea.getServiceProperty(nodeId[i], "p4", "port");
    String[] loc = new String[3];
    loc[0] = dispatcherIP;
    loc[1] = p4Port;
    loc[2] = null;
    servers.add(loc);
   mInitialContext.close();
} catch (NamingException e) {
} catch (RemoteException e) {
} finally {
   Thread.currentThread().setContextClassLoader(saveLoader);
return servers;
and the retreived server information used here in another class:
public void run() {
ReadLogsSession readLogsSession;
int total = servers.size();
for (Iterator iter = servers.iterator(); iter.hasNext();) {
   if (keepAlive) {
    try {
     Thread.sleep(500);
    } catch (InterruptedException e) {
     status = status + e.getMessage();
     System.err.println("LogReader Thread Exception" + e.toString());
     e.printStackTrace();
    String[] serverLocs = (String[]) iter.next();
    searchFilter.setDetails("[" + serverLocs[1] + "]");
    Properties prop = new Properties();
    prop.put(Context.INITIAL_CONTEXT_FACTORY, "com.sap.engine.services.jndi.InitialContextFactoryImpl");
    prop.put(Context.PROVIDER_URL, serverLocs[0] + ":" + serverLocs[1]);
    System.err.println("LogReader run [" + serverLocs[0] + ":" + serverLocs[1] + "]");
    status = " Reading :[" + serverLocs[0] + ":" + serverLocs[1] + "] servers :[" + currentIndex + "/" + total + " ] ";
    prop.put("force_remote", "true");
    prop.put(Context.SECURITY_AUTHENTICATION, "none");
    try {
     Context ctx = new InitialContext(prop);
     Object ob = ctx.lookup("com.xom.sia.ReadLogsSession");
     ReadLogsSessionHome readLogsSessionHome = (ReadLogsSessionHome) PortableRemoteObject.narrow(ob, ReadLogsSessionHome.class);
     status = status + "Found ReadLogsSessionHome ["+readLogsSessionHome+"]";
     readLogsSession = readLogsSessionHome.create();
     if(readLogsSession!=null){
      status = status + " Created ["+readLogsSession+"]";
      List l = readLogsSession.getAuditLogs(searchFilter);
      serverLocs[2] = String.valueOf(l.size());
      status = status + serverLocs[2];
      allRecords.addAll(l);
     }else{
      status = status + " unable to create readLogsSession ";
     ctx.close();
    } catch (NamingException e) {
     status = status + e.getMessage();
     System.err.println(e.getMessage());
     e.printStackTrace();
    } catch (CreateException e) {
     status = status + e.getMessage();
     System.err.println(e.getMessage());
     e.printStackTrace();
    } catch (IOException e) {
     status = status + e.getMessage();
     System.err.println(e.getMessage());
     e.printStackTrace();
    } catch (Exception e) {
     status = status + e.getMessage();
     System.err.println(e.getMessage());
     e.printStackTrace();
   currentIndex++;
jobComplete = true;
The application is working for multiple server instances with a single cluster node but not working for multiple cusltered environment.
Anybody knows what should be changed to handle more cluster nodes?
Thanks,
Gergely

Thanks for the response.
I was afraid that it would be something like that although
was hoping for
something closer to the application pools we use with IIS to
isolate sites
and limit the impact one badly behaving one can have on
another.
mmr
"Ian Skinner" <[email protected]> wrote in message
news:fe5u5v$pue$[email protected]..
> Run CF with one instance. Look at your processes and see
how much memory
> the "JRun" process is using, multiply this by number of
other CF
> instances.
>
> You are most likely going to end up on implementing a
"handful" of
> instances versus "dozens" of instance on all but the
beefiest of servers.
>
> This can be affected by how much memory each instance
uses. An
> application that puts major amounts of data into
persistent scopes such as
> application and|or session will have a larger foot print
then a leaner
> application that does not put much data into memory
and|or leave it there
> for a very long time.
>
> I know the first time we made use of CF in it's
multi-home flavor, we went
> a bit overboard and created way too many. After nearly
bringing a
> moderate server to its knees, we consolidated until we
had three or four
> or so IIRC. A couple dedicated to to each of our largest
and most
> critical applications and a couple general instances
that ran many smaller
> applications each.
>
>
>
>
>

Cluster Shared Volume is no longer accessible from cluster node

Hello,
We have a 3 nodes Hyper-v Cluster running Windows Server 2012. Recently we start having error below intermittently on a node, and the VMs running on this host and LUN will power off.
Alert: Cluster Shared Volume is no longer accessible from cluster node
Source: Cluster Service
Path: HV01.itl.local
Last modified by: System
Last modified time: 12/1/2013 12:27:18 AM
Alert description: Cluster Shared Volume 'Volume1' ('Cluster_Vol1_R6') is no longer accessible from this cluster node because of error 'ERROR_TIMEOUT(1460)'. Please troubleshoot this node's connectivity to the storage device and network connectivity.
The only changes made recently is we installed VEEAM on test basis for DR replication. We switched off the Veeam server and stop the Veeam Services on the Hyper-V Hosts but we are still having same issue.
We are using an EMC SAN connected via FC as Shared storage and Powerpath as Multi-Pathing. No errors were found on the SAN.
I don't think the issue is related to the number of IO as we also experienced the issue at midnight during the week-end where no one was working.
Any help would be very much appreciated.
Thanks.
Irfan
Irfan Goolab SALES ENGINEER (Microsoft UC) MCP, MCSA, MCTS, MCITP, MCT

Hi,
Also, try to install the following recommend KBs.
Recommended hotfixes and updates for Windows Server 2012-based Failover Clusters
http://support.microsoft.com/kb/2784261
Also, there please confirm your VSS provider have the correct version.
The third party article:
VSS Provider with 2012 HyperV and CSV
https://community.emc.com/thread/170636
Thanks.
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Changing Cluster node hostname

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