How to Prepare the Cluster for Additional Global-Cluster Nodes

Perform this procedure on existing global-cluster nodes to prepare the cluster for the addition of new cluster nodes.

Before You Begin

Perform the following tasks:

• Ensure that all necessary hardware is installed.

  • Ensure that the host adapter is installed on the new node. See the Sun Cluster 3.1 - 3.2 Hardware Administration Manual for Solaris OS.

  • Verify that any existing cluster interconnects can support the new node. See the Sun Cluster 3.1 - 3.2 Hardware Administration Manual for Solaris OS.

  • Ensure that any additional storage is installed. See the appropriate manual from the Sun Cluster 3.1 - 3.2 Hardware Administration Collection.

1. If you use the Cluster Control Panel (CCP), update the configuration files on the administrative console.

   1. Add to the cluster's entry in the /etc/clusters file the name of the node that you are adding.

   2. Add to the /etc/serialports files an entry with the new node name, the host name of the node's console-access device, and the port number.

2. Add the name of the new node to the cluster's authorized-nodes list.

   1. On any node, become superuser.

   2. Start the clsetup utility.

      phys-schost# clsetup

      The Main Menu is displayed.

   3. Choose the menu item, New nodes.

   4. Choose the menu item, Specify the name of a machine which may add itself.

   5. Follow the prompts to add the node's name to the list of recognized machines.

      The clsetup utility displays the message Command completed successfully if the task is completed without error.

   6. Quit the clsetup utility.

3. If you are adding a node to a single-node cluster, ensure that two cluster interconnects already exist by displaying the interconnect configuration.

   phys-schost# clinterconnect show

   You must have at least two cables or two adapters configured before you can add a node.

   • If the output shows configuration information for two cables or for two adapters, proceed to Step 4.

   • If the output shows no configuration information for either cables or adapters, or shows configuration information for only one cable or adapter, configure new cluster interconnects.

     1. On one node, start the clsetup utility.

        phys-schost# clsetup

     2. Choose the menu item, Cluster interconnect.

     3. Choose the menu item, Add a transport cable.

        Follow the instructions to specify the name of the node to add to the cluster, the name of a transport adapter, and whether to use a transport switch.

     4. If necessary, repeat Step c to configure a second cluster interconnect.

     5. When finished, quit the clsetup utility.

     6. Verify that the cluster now has two cluster interconnects configured.

        phys-schost# clinterconnect show

        The command output should show configuration information for at least two cluster interconnects.

4. Ensure that the private-network configuration can support the nodes and private networks that you are adding.

   1. Display the maximum numbers of nodes and private networks, and zone clusters on the Solaris 10 OS, that the current private-network configuration supports.

      phys-schost# cluster show-netprops

      The output looks similar to the following, which shows the default values on the Solaris 10 OS:

      === Private Network === private_netaddr: 172.16.0.0 private_netmask: 255.255.240.0 max_nodes: 64 max_privatenets: 10 max_zoneclusters: 12

   2. Determine whether the current private-network configuration can support the increased number of nodes, including non-global zones, and private networks.

      • If the current IP address range is sufficient, you are ready to install the new node.

        Go to How to Configure Sun Cluster Software on Additional Global-Cluster Nodes (scinstall).

      • If the current IP address range is not sufficient, reconfigure the private IP-address range.

        Go to How to Change the Private Network Configuration When Adding Nodes or Private Networks. You must shut down the cluster to change the private IP-address range. This involves switching each resource group offline, disabling all resources in the cluster, then rebooting into noncluster mode before you reconfigure the IP address range.

Next Steps

Configure Sun Cluster software on the new cluster nodes. Go to How to Configure Sun Cluster Software on Additional Global-Cluster Nodes (scinstall) or How to Configure Sun Cluster Software on Additional Global-Cluster Nodes (XML).