Universal Messaging 10.3 | Administration Guide | Using Command Central to Manage Universal Messaging | Universal Messaging Configuration Types | Cluster Management | Before You Create a Universal Messaging Cluster
 
Before You Create a Universal Messaging Cluster
Before you create or update a Universal Messaging cluster:
*Ensure that the server instances that you want to add to the cluster are running.
*Verify that the permissions on the server machines allow connections to the other servers in the cluster.
*Ensure that the /naming/defaultContext channel exists only on one or none of the nodes that will form the cluster. The Universal Messaging server instance used as a JNDI provider uses the /naming/defaultContext channel to store JMS references and JNDI objects. If channels exists on multiple nodes, you cannot create the cluster.
*Ensure that the keystore and truststore of each server instance in the cluster contain the certificates required for communicating with the rest of the server instances. This is required when the server instances that you want to add to the cluster have only nsps or nhps interfaces. Perform the following steps for a server instance:
1. Create a keystore and a truststore.
2. Import the certificate of the server instance into the keystore.
3. Import the certificates of all servers that you want to add to the cluster into the truststore.
4. Add the paths to the keystore and truststore, as well as the keystore and truststore passwords, to the corresponding JSSE system properties in the Server_Common.conf file of the server instance. The file is located in the Software AG_directory \UniversalMessaging\server\instanceName\bin directory.