Summary
In a failover cluster, virtual machines can use Cluster Shared Volumes that are on the same LUN (disk), while still being able to fail over (or move from node to node) independently of one another. Virtual machines can use a Cluster Shared Volume only when communication between the cluster nodes and the volume is functioning correctly, including network connectivity, access, drivers, and other factors.
Event Details
Event ID: | 5200 |
Source: | Microsoft-Windows-FailoverClustering |
Symbolic Name: | CAM_CANNOT_CREATE_CNO_TOKEN |
Message: Cluster service failed to create a cluster identity token for Cluster Shared Volumes. The error code was '%1'. Ensure the domain controller is accessible and check for connectivity issues. Until connection to the domain controller is recovered, some operations on this node against the Cluster Shared Volumes might fail.Search System Error Codes ( http://go.microsoft.com/fwlink/?LinkId=83027).
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Causes
This was due the domain controller is not accessible because of connectivity issues. Until connection to the domain controller is recovered, some operations on this node against the Cluster Shared Volumes might fail.
Resolutions
CSV - Check communication between domain controllers and nodes
If you do not currently have Event Viewer open, see "Opening Event Viewer and viewing events related to failover clustering." If the event contains an error code that you have not yet looked up, see "Finding more information about error codes that some event messages contain." After reviewing event messages, choose actions that apply to your situation:
Ensure that the Network Name resource for the cluster is online. For more information, see "Ensuring that the Network Name resource for the cluster is online."
Confirm that the cluster nodes can communicate with one or more domain controllers. Confirm that the networks in the nodes are enabled, one or more writeable domain controllers are available on the network, and that elements of the network such as hubs, switches, or bridges appear to be functioning.
On a domain controller, use Active Directory Users and Computers to confirm that a computer account (computer object) exists with the same name as the cluster, and that the account is enabled.
To perform the following procedures, you must be a member of the local Administrators group on each clustered server, and the account you use must be a domain account, or you must have been delegated the equivalent authority.
Ensuring that the Network Name resource for the cluster is online
To ensure that the Network Name resource for the cluster is online:
To open the failover cluster snap-in, click Start, click Administrative Tools, and then click Failover Cluster Manager. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Yes.
In the Failover Cluster Manager snap-in, if the cluster you want to manage is not displayed, in the console tree, right-click Failover Cluster Manager, click Manage a Cluster, and then select or specify the cluster that you want.
Click View, and then click Customize. In the list, make sure that Action pane is selected, and then click OK.
Click the name of the cluster that you want to view the Network Name resource for.
In the Actions pane, under Name:[clustername] , find the command Bring this resource online. If it is available, click it. If not, the Network Name resource for the cluster is already online.
Opening Event Viewer and viewing events related to failover clustering
To open Event Viewer and view events related to failover clustering:
If Server Manager is not already open, click Start, click Administrative Tools, and then click Server Manager. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
In the console tree, expand Diagnostics, expand Event Viewer, expand Windows Logs, and then click System.
To filter the events so that only events with a Source of FailoverClustering are shown, in the Actions pane, click Filter Current Log. On the Filter tab, in the Event sources box, select FailoverClustering. Select other options as appropriate, and then click OK.
To sort the displayed events by date and time, in the center pane, click the Date and Time column heading.
Finding more information about the error codes that some event messages contain
To find more information about the error codes that some event messages contain:
View the event, and note the error code.
Look up more information about the error code in one of two ways:
Search System Error Codes ( http://go.microsoft.com/fwlink/?LinkId=83027).
Click Start, point to All Programs, click Accessories, click Command Prompt, and then type:
NET HELPMSG errorcode
Verify
Confirm that the Cluster Shared Volume can come online. If there have been recent problems with writing to the volume, it can be appropriate to monitor event logs and monitor the function of the corresponding clustered virtual machine, to confirm that the problems have been resolved.
To perform the following procedures, you must be a member of the local Administrators group on each clustered server, and the account you use must be a domain account, or you must have been delegated the equivalent authority.
Confirming that a Cluster Shared Volume can come online
To confirm that a Cluster Shared Volume can come online:
To open the failover cluster snap-in, click Start, click Administrative Tools, and then click Failover Cluster Manager. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Yes.
In the Failover Cluster Manager snap-in, if the cluster you want to manage is not displayed, in the console tree, right-click Failover Cluster Manager, click Manage a Cluster, and then select or specify the cluster that you want.
If the console tree is collapsed, expand the tree under the cluster you want to manage, and then click Cluster Shared Volumes.
In the center pane, expand the listing for the volume that you are verifying. View the status of the volume.
If a volume is offline, to bring it online, right-click the volume and then click Bring this resource online.
Using a Windows PowerShell command to check the status of a resource in a failover cluster
To use a Windows PowerShell command to check the status of a resource in a failover cluster:
On a node in the cluster, click Start, point to Administrative Tools, and then click Windows PowerShell Modules. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Yes.
Type:
Get-ClusterSharedVolume
If you run the preceding command without specifying a resource name, status is displayed for all Cluster Shared Volumes in the cluster.
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