hi,
i ran into below issue:
https://docs.datastax.com/en/dse-trblshoot/doc/troubleshooting/connectionsFail.html
fixed it with given solution, but what i found it whenever i configure nodes in LCM, LCM will delete entry that i used for resolving JMX issue and it does not preserve it plus there is no entry in Config profile for adding :
JVM_OPTS = "$JVM_OPTS -Djava.rmi.server.hostname=public name"