Adding Modules to a Cluster

This procedure describes how to add one or more modules to an existing cluster.

  1. Stop all the Spectrumâ„¢ Technology Platform nodes in the cluster. For more information, see Stopping a Cluster. If your cluster has a separated configuration database cluster, you only need to stop the server cluster, not the configuration database cluster.
    Warning: To prevent data loss you must stop the cluster by following the procedure described in Stopping a Cluster.
  2. On any node in the cluster, install the module or modules you want to add.
  3. Open this file in a text editor:


  4. In the spectrum.cluster.seeds property, remove all host names and IP addresses except for the one for this server. Save the host names and IP addresses so that you can re-add them later.
  5. Save the file.
  6. Start the server.
    Note: Wait for the server to fully start before proceeding.
  7. In the file, add the host names and IP addresses that you had removed.
  8. Save the file. You do not need to restart the server.
  9. Install the modules on each of the other nodes in the cluster. Start each node after installing the modules on it, and wait for it to fully start before installing the modules on the next node. You do not need to modify the spectrum.cluster.seeds property when installing modules on subsequent nodes.