WSO2 Message Broker Uses Apache ZooKeeper to handle clustering such as listen to, notify and synchronize cluster across messages. The idea is to all clients connecting to zookeeper should be authenticated so that instances not belonging to the cluster cannot mess with the cluster across messages that are shared between the authenticated ones.
If exist, edit the file at <MB_HOME>/repository/conf/security/jaas.conf file. Otherwise you must create it.
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