Adding a Node to a ServerNet SAN-Interconnected Cluster

Use the procedures in this chapter to add a new node to your existing ServerNet SAN-interconnected cluster or to re-initialize a node that was previously a member of the ServerNet-interconnected cluster. You may need to re-initialize a node to change that node's configuration. You can also use this procedure to replace a failed node. You cannot add a node to an Ethernet-interconnected cluster

Prepare carefully and familiarize yourself with these procedures before you begin.

Use the following information to add a node to an existing ServerNet-interconnected cluster:

For administrative information regarding your cluster, see the SCO UnixWare 7 NonStop Clusters System Administrator's Guide.

Preparing to Add a Node

Before you add a node to a ServerNet-interconnected cluster, be sure that:

Adding a Dependent Node to an Existing Cluster

You can use this procedure to add a new node to the ServerNet-interconnected cluster or to bring a down node back into the cluster. Do not use this procedure to set up a node as the failover root node.

NOTE: Before you add a node to your ServerNet-interconnected cluster, be sure that the initial installation node is running and that power to the node you want to add is turned off.

Making the Dependent Node Boot Diskettes

The dependent boot node diskettes allow you to add nodes to a ServerNet-interconnected cluster. If you have not remade these diskettes since the last time your kernel was rebuilt (or if you are not sure that you have), remake them now. To make the dependent node boot diskettes, perform the following steps:

  1. If necessary, format and label two diskettes. You can use any blank, formatted diskettes.

    1. To format your own diskettes, use the following command:

      format /dev/rdsk/f03ht
    2. Label one diskette dependent node diskette 1. Label another dependent node diskette 2.

  2. On the root node, insert dependent node diskette 1 into the diskette drive, and enter the following command:

    make_floppy diskette1
  3. When prompted, replace dependent node diskette 1 with dependent node diskette 2 and press the Enter key.

  4. When prompted, remove the second diskette from the drive.

  5. Write protect both diskettes and continue with the following procedure to install the SCO UnixWare 7 NonStop Clusters software on the node you want to add.

Installing the SCO UnixWare 7 NonStop Clusters Software on the Node You Want to Add

Be sure that the root node is up and running and that power to the node you want to add is turned off. Use the following procedures to add a node to the ServerNet-interconnected cluster:

If you receive any errors when performing the following procedures, stop and start over. If the error persists, contact your service representative.

Boot from the Dependent Node Diskettes

  1. Insert dependent node diskette 1 into the diskette drive of the node to be added.

  2. Turn on the node. It boots from dependent node diskette 1.

  3. When prompted, replace dependent node diskette 1 with dependent node diskette 2 and press the Enter key.

  4. At the prompt, enter the node number of the node you are adding and press the Enter key. If the node has been installed into the cluster previously, a prompt appears, asking if you want to reinitialize the node. You can then exit or continue adding the node.

  5. A licensing prompt appears. Continue with the following procedure for entering licensing information.

Enter Licensing Information

If you have not already entered the node's UnixWare and NonStop Clusters license information, a prompt appears asking if you want to enter that information. Perform the following steps to enter that information (or answer no to the prompt if you have entered the information):

  1. Answer yes to the prompt. The License Manager screen will appear.

  2. Press the F10 key or the Tab key to access the menu bar.

  3. Select License-->Add.

  4. In the resulting Add License dialog box, enter this node's UnixWare 7 Release 7.1.1 license number and code.

  5. When prompted, select the License button within the dialog box and enter the license data and node number in the appropriate fields.

  6. Repeat Steps 2-5 to add the SCO UnixWare 7 Release 7.1.1 NonStop Clusters license.

  7. Select the License button again and select OK.

  8. Exit the administration utility by selecting Host ->Exit.

  9. Continue the installation by setting up the dependent node's disks using the following procedure.

NOTE: If you are installing the failover root node for a ServerNet-interconnected cluster that will use cross-node mirroring for root filesystem failover, the dependent node boot diskette software initializes the new node's internal disk automatically, and then mirrors the root filesystem to that drive. Mirroring can take considerable time, depending on the size of your root filesystem.

Setting Up the Dependent Node's Disks

After you have entered license information, the setup program displays the node disk setup screens. Perform the following steps:

  1. Select Disk 1.

  2. Select Automatic configuration.

  3. Select Apply changes to hard disk(s).

  4. Select Apply changes and exit.

  5. Continue dependent node installation by setting up network information using the following procedure.

Setting Up Network Information

After the setup program sets up the dependent node's hard disk, it prompts you to set up network information for the node.

You can configure network information at a later time by running the Network Configuration Manager manually with the scoadmin(1M) utility.

Perform the following steps to configure the node's network information:

  1. Enter yes at the Do you want to enter network information prompt. A popup window appears, containing a list of the network interface controllers (NICs) installed in this node.

  2. Select the NIC you want to configure.

  3. From the Hardware menu item, select Add new LAN adapter. The Add new LAN adapter window appears.

  4. Select Continue. The Network Driver Configuration window appears.

  5. Select OK. The Add protocol window appears.

  6. Select TCP/IP and then click the Add button. At this point, the setup program calls the Network Configuration Manager, which displays the Internet Protocol Configuration window.

  7. Enter the appropriate information for the node you are adding, and click OK. A popup window displays a successful completion message.

  8. Click OK to return to the setup program's main networking window.

  9. From the Hardware menu item, select Exit.

The dependent node setup program displays a number of messages while it installs the SCO UnixWare 7 NonStop Clusters software on the node. When it finishes installing the software, if the node you installed is a failover root node, the program prompts you to reboot the cluster; otherwise, it prompts you to reboot the node. Before you reboot, remove any diskettes from the diskette drive and any CD-ROMs from the CD-ROM drive.