To configure a VCS cluster

1. Access the Veritas High Availability view (for any system belonging the required cluster).

   See Launching the VCS Cluster Configuration wizard.

2. Review the information on the Welcome panel and click Next.

   The Configuration Inputs panel appears.

   The local system is by default selected as a cluster system.

3. If you do not want to add more systems to the cluster, skip this step. You can add systems later using the same wizard.

   To add a system to the cluster, click Add System.

   In the Add System dialog box, specify the following details for the system that you want to add to the VCS cluster and click OK.

   System Name or IP address	Specify the name or IP address of the system that you want to add to the VCS cluster.
   User name	Specify the user account for the system. Typically, this is the root user. The root user should have the necessary privileges.
   Password	Specify the password for the user account you specified.
   Use the specified user account on all systems	Select this check box to use the specified user account on all the cluster systems that have the same user name and password.

4. On the Configuration Inputs panel, do one of the following actions:

   • To add another system to the cluster, click Add System and repeat step 3.

   • To modify the specified User name or Password for a cluster system, use the edit icon.

   • Click Next

5. If you do not want to modify the security settings for the cluster, click Next, and proceed to step 7.

   By default, the wizard configures single sign-on for secure cluster communication. If you want to modify the security settings for the cluster, click Advanced Settings.

6. In the Advanced settings dialog box, specify the following details and click OK.

   Use Single Sign-on	Select to configure single sign-on using VCS Authentication Service for cluster communication. This option is enabled by default.
   Use VCS user privileges	Select to configure a user with administrative privileges to the cluster. Specify the username and password and click OK.

7. On the Network Details panel, select the type of network protocol to configure the VCS cluster network links (Low Latency Transport or LLT module), and then specify the adapters for network communication.

   The wizard configures the VCS cluster communication links using these adapters. You must select a minimum of two adapters per cluster system.

   Note:

   By default, the LLT links are configured over Ethernet.

   Select Use MAC address for cluster communication (LLT over Ethernet) or select Use IP address for cluster communication (LLT over UDP), and specify the following details for each cluster system.

   • To configure LLT over Ethernet, select the adapter for each network communication link. You must select a different network adapter for each communication link.

   • To configure LLT over UDP, select the type of IP protocol (IPv4 or IPv6), and then specify the required details for each communication link.

     Network Adapter	Select a network adapter for the communication links. You must select a different network adapter for each communication link.
     IP Address	Displays the IP address.
     Port	Specify a unique port number for each link. For IPv4 and IPv6, the port range is from 49152 to 65535. A specified port for a link is used for all the cluster systems on that link.
     Subnet mask (IPv4)	Displays the subnet mask details.
     Prefix (IPv6)	Displays the prefix details.

   By default, one of the links is configured as a low-priority link on a public network interface. The second link is configured as a high-priority link.

   To change a high-priority link to a low-priority link, click Modify. In the Modify low-priority link dialog box, select the link and click OK.

   Note:

   Veritas recommends that you configure one of the links on a public network interface. You can assign the link on the public network interface as a low-priority link for minimal VCS cluster communication over the link.

8. On the Configuration Summary panel, specify a cluster name and unique cluster ID and then click Validate.

   Note:

   If multiple clusters exist in your network, the wizard validates if the specified cluster ID is a unique cluster ID among all clusters accessible from the current system. Among clusters that are not accessible from the current system, you must ensure that the cluster ID you specified is unique

9. Review the VCS Cluster Configuration Details and then click Next to proceed with the configuration
10. On the Implementation panel, the wizard creates the VCS cluster.

    The wizard displays the status of the configuration task. After the configuration is complete, click Next.

    If the configuration task fails, click Diagnostic information to check the details of the failure. Rectify the cause of the failure and run the wizard again to configure the VCS cluster.

11. On the Finish panel, click Finish to complete the wizard workflow.

    This completes the VCS cluster configuration.