title: datastax enterprise is crashing with exception while starting in cluster
body: <p>I am trying to setup DSE cluster. My seed node is working fine but when I try to run DSE service on cluster node it crashes with the exception</p>
  
  <p>ERROR 09:46:47,271 Exception encountered during startup
  java.lang.IllegalStateException: Unable to contact any seeds!
        at org.apache.cassandra.service.StorageService.bootstrap(StorageService.java:947)
        at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:716)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:554)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:451)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:347)
        at com.datastax.bdp.server.DseDaemon.setup(DseDaemon.java:137)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:446)
        at com.datastax.bdp.server.DseDaemon.main(DseDaemon.java:334)
  java.lang.IllegalStateException: Unable to contact any seeds!
        at org.apache.cassandra.service.StorageService.bootstrap(StorageService.java:947)
        at org.apache.cassandra.service.StorageService.joinTokenRing(StorageService.java:716)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:554)
        at org.apache.cassandra.service.StorageService.initServer(StorageService.java:451)
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:347)
        at com.datastax.bdp.server.DseDaemon.setup(DseDaemon.java:137)
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:446)
        at com.datastax.bdp.server.DseDaemon.main(DseDaemon.java:334)
  Exception encountered during startup: Unable to contact any seeds!
  ERROR 09:46:47,279 Exception in thread Thread[StorageServiceShutdownHook,5,main]
  java.lang.NullPointerException
        at org.apache.cassandra.service.StorageService.stopRPCServer(StorageService.java:321)
        at org.apache.cassandra.service.StorageService.shutdownClientServers(StorageService.java:370)
        at org.apache.cassandra.service.StorageService.access$000(StorageService.java:88)
        at org.apache.cassandra.service.StorageService$1.runMayThrow(StorageService.java:519)
        at org.apache.cassandra.utils.WrappedRunnable.run(WrappedRunnable.java:28)
        at java.lang.Thread.run(Thread.java:744)</p>
  
  <p>Can anybody please help me resolving this problem?</p>
  
  <p>Jenish</p>