[WARN] [net.sf.ehcache.distribution.RMICacheManagerPeerListener:120] Explicitly setting the listener hostname to 'localhost' is not recommended. It will only work if all CacheManager peers are on the same machine.
[2017-11-07 20:37:21] [ERROR] [net.sf.ehcache.distribution.MulticastRMICacheManagerPeerProvider:98] Error starting heartbeat. Error was: error setting options
java.net.SocketException: error setting options
at java.net.TwoStacksPlainDatagramSocketImpl.join(Native Method)
at java.net.AbstractPlainDatagramSocketImpl.join(AbstractPlainDatagramSocketImpl.java:178)
at java.net.MulticastSocket.joinGroup(MulticastSocket.java:319)