Just have 2 clusters, one with wls1-2 and one with wls3-4. That said, for your use case I doubt you need those master servers as all. So you will want to name your master servers in such a way that they are the first alphanumerically in the cluster. The first Managed Server for each group becomes the group leader for the other (up to) nine Managed Servers in the group." The second set of 10 Managed Servers (if applicable) becomes the second group, and so on until all Managed Servers in the cluster are organized into groups of 10 Managed Servers or less. To configure the trust store for Node Manager, add to the Node Manager start scripts. The first 10 Managed Servers in the list (up to 10 Managed Servers) become the first unicast clustering group. If Managed Server disables non-SSL port, Node Manager needs to trust the certificate received from the server. For unicast clusters, WebLogic Server reads these Managed Server names and then sorts them into an ordered list by alphanumeric name. "Each of the Managed Servers in a WebLogic Server cluster has a name. Here is the pertinent info from the Oracle Docs: With regards to Unicast it is pretty easy to set up (we just leave all the default values alone). Without the nodemanager you will have to start each server individually using the startManagedWebLogic.sh script and if you need to bring servers up and down often it will be very annoying. For more information on creating a machine, see Create and configure machines. wls1-4, the Admin server will attempt to talk to the node manager to start the servers. You can configure custom keystores for Nodemanager by adding the NM parameters in nodemanager.properties file Edit the nodemanager.properties file and add the following paramaters : KeyStoresCustomIdentityAndCustomTrust CustomIdentityKeyStoreFileNameidentity. Before you begin Ensure that you have created a machine and that you have installed and configured Node Manager on each physical machine that contains a WebLogic Server instance. When you log into the weblogic admin console and attempt to start one of your servers e.g. No, you don't necessarily have to use a nodemanager, but it will make your life easier.
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