This deployment method enables you to create a failover cluster.Error during installation of an SQL server Failover Cluster Instance – CSS SQL Server Engineers. A common issue I've run into while helping with SQL Server Failover Cluster (FCI) installations is the failure of the Network Name. In the following post I'll discuss a bit of background, the common root cause, and how to resolve it. Background. The SQL Server Database Engine service is dependent on the Network Name resource. A failure of the Network Name will result in the SQL Server Resource not coming online. When the Windows Failover Cluster (WFC) is initially configured a Cluster Name object (CNO) will be created. The CNO is visible as a computer object in your Activity Directory Users and Computer snap- in (dsa. By default the CNO will be created in the Computers container and granted specific permissions: After a successful SQL Server FCI installation you will now see a Virtual Computer Object (VCO) for the SQL Server Network Name: *Note: After the CNO is created any additional Network Name resource in the cluster is considered a Virtual Computer Object. VCO’s are simply Computer objects in which the CNO has permissions to change the properties or reset the password. Problem. But what if the CNO does not possess the required permissions to create computer objects in the “Computers” container? It is in the above scenario where we commonly see the following errors during SQL Server FCI installation: The following error has occurred: The cluster resource 'SQL Server (SQL2. SQL Network Name(VSQL2. Refer to the Cluster Events in the Failover Cluster Manager for more information. A user encountering the same issue while installing a pre- SQL Server 2. The cluster resource 'SQL Server (MSSQLSERVER)' could not be brought online. By default all computer objects are created in the same container as the cluster identity 'CLUS2. The quota for computer objects has not been reached.- If there is an existing computer object, verify the Cluster Identity 'CLUS2. Full Control' permission to that computer object using the Active Directory Users and Computers tool. Cluster log. More specifically, the permission . ![]() The wizards create a computer account for the cluster itself (this account is also called the cluster name object or CNO) and a computer account for most types of clustered services and applications”When the SQL Server Network Name is first brought online during the FCI installation process, the CNO identity is used to create the VCO(as long as the VCO doesn’t already exist). If the required permissions are not granted to the CNO, the creation of the VCO will fail and so will your SQL Server FCI installation. For Windows Server 2. Add Workstations to the Domain”. Resolution(s)Option #1. We must grant the permissions . Here's an example of granting the required permissions for demonstration purposes: 1. Open the Active Directory Users and Computers Snap- in (dsa. To install a new SQL Server failover cluster using Integrated Install with Add Node. Insert the SQL Server installation media, and from the root folder, double-click. This post shows how to install, configure and test MS Windows 2008 R2 Failover Cluster on VirtualBox.A single computer allows to install latest MS server OS Windows. Locate “Computers” container: 3. Open the properties of the container and click the . Make sure to select “Computers” option in the “Object Types” window: 5. Click OK until you're back to the AD Users and Computer window: 7. Retry your previously failed installation. Note that with SQL Server 2. Option # 2. We can also “Pre- Stage” the VCO, which is useful in situations where the Domain Administrator does not allow the CNO “Read All Properties” and “Create computer Objects” permissions: 1. Ensure that you are logged in as a user that has permissions to create computer objects in the domain. Open the Active Directory Users and Computers Snap- in (dsa. Select View - > Advanced Features. Right click the OU/Container you want the VCO to reside in and click “New” - > “Computer”5. Provide a name for the object (This will be your SQL Server Network Name) and click “OK”: 6. Right click on the on the VCO you just created and select “Properties”. Click the security tab and then click “Add”: 7. Enter the CNO (Make sure to select “Computers” option in the “Object Types” window) and click “OK”. Highlight the CNO, check the following permissions, and click “OK”. Read Allowed To Authenticate Change Password Receive As Reset Password Send As Validate write To DNS Host Name Validate Write To Service Principle Name Read Account Restrictions Write Account Restrictions Read DNS Host Name Attributes Read MS- TS- Gateway. Access Read Personal Information Read Public Information *Note: You can replace step #8 by giving the CNO “Full Control” over the VCO9. Install SQL Server and the Network Name resource should start without issue. References: Failover Cluster Step- by- Step Guide: Configuring Accounts in Active Directoryhttp: //technet. WS. 1. 0). aspx. Before Installing Failover Clusteringhttp: //msdn. Add workstations to domainhttp: //technet. WS. 1. 0). aspx. Troy Moen – Support Escalation Engineer. Create a Failover Cluster Updated: March 8, 2. Applies To: Windows Server 2. R2, Windows Server 2. This topic shows how to create a failover cluster by using either the Failover Cluster Manager snap- in or Windows Power. Shell. The topic covers a typical deployment, where computer objects for the cluster and its associated clustered roles are created in Active Directory Domain Services (AD DS). Note. In Windows Server 2. R2 you can also deploy an Active Directory- detached cluster. This deployment method enables you to create a failover cluster without permissions to create computer objects in AD DS or the need to request that computer objects are prestaged in AD DS. This option is only available through Windows Power. Shell, and is only recommended for specific scenarios. For more information, see Deploy an Active Directory- Detached Cluster. Checklist: Create a failover cluster Create a failover cluster by using Windows Power. Shell. Before you begin, verify the following prerequisites: Make sure that all servers that you want to add as cluster nodes are running the same version of Windows Server. Note. You can use the Failover Clustering feature on all editions of Windows Server 2. R2 and Windows Server 2. This includes Server Core installations. Review the hardware requirements to make sure that your configuration is supported. For more information, see Failover Clustering Hardware Requirements and Storage Options. If you want to add clustered storage during cluster creation, make sure that all servers can access the storage. As a best practice, we recommend that you place failover clusters in their own OU in AD DS. This can help you better control which Group Policy settings or security template settings affect the cluster nodes. By isolating clusters in their own OU, it also helps prevent against accidental deletion of cluster computer objects. Additionally, verify the following account requirements: Make sure that the account you want to use to create the cluster is a domain user who has administrator rights on all servers that you want to add as cluster nodes. Make sure that either of the following is true: The user who creates the cluster has the Create Computer objects permission to the OU or the container where the servers that will form the cluster reside. If the user does not have the Create Computer objects permission, ask a domain administrator to prestage a cluster computer object for the cluster. For more information, see Prestage Cluster Computer Objects in Active Directory Domain Services. You must install the Failover Clustering feature on every server that you want to add as a failover cluster node. To install the Failover Clustering feature. Start Server Manager. On the Manage menu, click Add Roles and Features. On the Before you begin page, click Next. On the Select installation type page, click Role- based or feature- based installation, and then click Next. On the Select destination server page, click the server where you want to install the feature, and then click Next. On the Select server roles page, click Next. On the Select features page, select the Failover Clustering check box. To install the failover cluster management tools, click Add Features, and then click Next. On the Confirm installation selections page, click Install. Note. A server restart is not required for the Failover Clustering feature. When the installation is completed, click Close. Repeat this procedure on every server that you want to add as a failover cluster node. Before you create the failover cluster, we strongly recommend that you validate the configuration to make sure that the hardware and hardware settings are compatible with failover clustering. Microsoft supports a cluster solution only if the complete configuration passes all validation tests and if all hardware is certified for the version of Windows Server that the cluster nodes are running. Note. You must have at least two nodes to run all tests. If you have only one node, many of the critical storage tests do not run. To run cluster validation tests. On a computer that has the Failover Cluster Management Tools installed from the Remote Server Administration Tools, or on a server where you installed the Failover Clustering feature, start Failover Cluster Manager. To do this on a server, start Server Manager, and then on the Tools menu, click Failover Cluster Manager. In the Failover Cluster Manager pane, under Management, click Validate Configuration. On the Before You Begin page, click Next. On the Select Servers or a Cluster page, in the Enter name box, enter the Net. BIOS name or the fully qualified domain name of a server that you plan to add as a failover cluster node, and then click Add. Repeat this step for each server that you want to add. To add multiple servers at the same time, separate the names by a comma or by a semicolon. For example, enter the names in the format server. When you are finished, click Next. On the Testing Options page, click Run all tests (recommended), and then click Next. On the Confirmation page, click Next. The Validating page displays the status of the running tests. On the Summary page, do either of the following: If the results indicate that the tests completed successfully and the configuration is suited for clustering, and you want to create the cluster immediately, make sure that the Create the cluster now using the validated nodes check box is selected, and then click Finish. Then, continue to step 4 of the Create the failover cluster procedure. If the results indicate that there were warnings or failures, click View Report to view the details and determine which issues must be corrected. Realize that a warning for a particular validation test indicates that this aspect of the failover cluster can be supported, but might not meet the recommended best practices. For more information about hardware validation tests, see Validate Hardware for a Failover Cluster. To complete this step, make sure that the user account that you log on as meets the requirements that are outlined in the Verify the prerequisites section of this topic. To create the failover cluster. Start Server Manager. On the Tools menu, click Failover Cluster Manager. In the Failover Cluster Manager pane, under Management, click Create Cluster. The Create Cluster Wizard opens. On the Before You Begin page, click Next. If the Select Servers page appears, in the Enter name box, enter the Net. BIOS name or the fully qualified domain name of a server that you plan to add as a failover cluster node, and then click Add. Repeat this step for each server that you want to add. To add multiple servers at the same time, separate the names by a comma or a semicolon. For example, enter the names in the format server. When you are finished, click Next. Note. If you chose to create the cluster immediately after running validation in the procedure Validate the configuration, you will not see the Select Servers page. The nodes that were validated are automatically added to the Create Cluster Wizard so that you do not have to enter them again. If you skipped validation earlier, the Validation Warning page appears. We strongly recommend that you run cluster validation. Only clusters that pass all validation tests are supported by Microsoft. To run the validation tests, click Yes, and then click Next. Complete the Validate a Configuration Wizard as described in the procedure Validate the configuration. On the Access Point for Administering the Cluster page, do the following: In the Cluster Name box, enter the name that you want to use to administer the cluster. Before you do, review the following information: During cluster creation, this name is registered as the cluster computer object (also known as the cluster name object or CNO) in AD DS. If you specify a Net. BIOS name for the cluster, the CNO is created in the same location where the computer objects for the cluster nodes reside. This can be either the default Computers container or an OU.
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