Dynamic Apps Platform : Universal Messaging 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.
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