Add vertical cluster members to a dynamic cluster

We can add vertical cluster members to the dynamic cluster. The members share the workload demands across multiple members that run on the same server.

1. Open a browser and go to...
   http://dmgr_host:9060/ibm/console

2. Set the number of vertical cluster members allowed on each node. Go to..
   Servers | Clusters | Dynamic clusters | dynamic cluster | Vertical stacking of instances on node | Allow more than one instance to start on the same node

   ...and enter a new value in the text box...

   Number of instances

   To view the list of new cluster members...

   Servers | Clusters | Dynamic Clusters | clustername | Cluster Members view

   To view the new cluster topology.

   Servers | Clusters | Cluster Topology

3. Update virtual host entries:

   1. Identify the port values for the new dynamic members.

   2. Review: Configure virtual hosts

   3. Log in to the WAS console and update the default_host virtual host.

      Add an alias entry for the port number. Use an "*" wildcard character for the host name.

   4. Enable cache replication:

      From the dmgr console, go to...

      Servers | Server Types | WebSphere application servers | new_vertical_cluster_member | Container services | Dynamic cache service

      ...and set...

      Cache size	3000
      Enable cache replication	Checked
      Replication type	NOT_SHARED

      Click OK and Save, to save the changes to the master configuration.

   5. Complete the following steps on each vertical cluster member to clean up the server-scoped resources, caches, and resource providers:

      cd WP_PROFILE/ConfigEngine
       ./ConfigEngine.sh cluster-node-config-vertical-cluster-setup \
           -DServerName=unique_vertical_cluster_servername \
           -DWasPassword=foo 

      Restart the vertical cluster member referenced in the cluster-node-config-vertical-cluster-setup task.

   6. Save the changes and resynchronize the nodes.
      System Administration > Nodes | node | Full Resynchronize

   7. If we transferred the databases after creating the cluster, on each vertical cluster member, log on to the dmgr console, go to...
      Environment | WebSphere Variables | Scope menu | Node=nodename, Server=servername

      ...and set...

      WCM_DATASOURCE = jdbc/jcr.DataSourceName

      For example...

      jdbc/wpdbds_jcr

      Save all changes and synchronize the nodes then restart the server