6. Adding Nodes

To add new Cluster Nodes to the cluster, please proceed as follows:

  1. Install the adapter in the Cluster Nodes to be added and power the Cluster Nodes up.


    Do not yet connect the Interconnect cables, but make sure that Ethernet communication towards the Cluster Management Node is working.

  2. Install the Dolphin eXpressWare software stack on all Cluster Nodes via the Windows installer.


    Do not yet start the applications on the new Cluster Nodes that should use SuperSockets, as they would connect to the old Cluster Nodes via Ethernet, and would remain in this mode even when SuperSockets are available.

  3. Change the cluster configuration using dis_netconfig:

    1. Load the existing configuration.

    2. In the cluster settings, change the topology to match the topology with all new Cluster Nodes added.

    3. Change the hostnames of the newly added Cluster Nodes via the Cluster Node settings of each Cluster Node. Also make sure that the socket configuration matches those of the existing Cluster Nodes.

    4. Save the new cluster configuration. If desired, create and save or print the cabling instructions for the extended cluster.

    5. If you are not running dis_netconfig or dis_mkconf on the Cluster Management Node, transfer the saved files dishosts.conf and cluster.conf to the directory c:\Program Files\Dolphin Express IX on the Cluster Management Node.

  4. Restart the Network Manager on the Cluster Management Node. If you run dis_admin, the new Cluster Nodes should show up as red icons. All other Cluster Nodes should continue to stay green.

  5. Connecting the new Cluster Nodes to the PCIe switch. When you are done, the LEDs on all adapters should light green according to the link configuration, and all Cluster Node icons in dis_admin should also light green.

  6. Perform the PCIe connection test from within dis_admin to ensure that the PCIe connections are correct (see Chapter 4, Initial Installation, Section 3.7.4, “PCIe connection Test”).

  7. Now you can start the applications on the new Cluster Nodes as you did on the old Cluster Nodes, and they will be able to connect to the old Cluster Nodes.