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TIBCO BusinessEvents® Enterprise Edition 6.3.1

# Unicast (Well-Known Address) Cluster Member Discovery

If you cannot or do not wish to use multicast discovery in your environment, then configure unicast discovery, also known as "well-known address" or WKA discovery.

These "well-known addresses" enable a newly started node to discover existing members. Unicast discovery uses the TCP protocol.

Set the URL value in the Discover URL field of the Legacy ActiveSpaces Cache OM Settings Reference. For unicast discovery, the value is a semicolon-separated list comprising a sub-set of all the listen URLs (which are different for each PU), using this format:

    tcp://ip:port[;ip:port]*/

Note:
One cluster node in the WKA list must be running at all times
At least one cluster node specified in the discovery URL must be running at all times, so that other new members can join the cluster (metaspace). If all nodes specified in the discovery URL stop, then other nodes that are still running continue to function, but they print warnings to the console and no new members can connect to this cluster.
For WKA discovery, make discover URL a cluster-level property and listen URL a PU-level property
You can define discoveryURL and listenURL in the Legacy ActiveSpaces Cache OM Settings in TIBCO BusinessEvents Studio CDD editor. You can add the discover URL property (`be.engine.cluster.as.discover.url`) and the listen URL property (`be.engine.cluster.as.listen.url`) to overwrite configured default settings.

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TIBCO BusinessEvents® Enterprise Edition

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