After enabling that option, I'm seeing errors like this on the node I can't connect to.
Sep 04, 2015 2:35:48 AM sun.rmi.server.UnicastServerRef logCallException FINE: RMI TCP Connection(4)-127.0.0.1: [127.0.0.1] exception: javax.management.InstanceNotFoundException: org.apache.cassandra.metrics:type=ColumnFamily,keyspace=ks,scope=cf,name=PendingTasks at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getMBean(DefaultMBeanServerInterceptor.java:1095) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.getAttribute(DefaultMBeanServerInterceptor.java:643) at com.sun.jmx.mbeanserver.JmxMBeanServer.getAttribute(JmxMBeanServer.java:678) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1448) at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1312) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1404) at javax.management.remote.rmi.RMIConnectionImpl.getAttribute(RMIConnectionImpl.java:641) at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:323) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:568) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:826) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$79(TCPTransport.java:683) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:682) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) On Wed, Aug 26, 2015 at 2:05 PM, Nate McCall <n...@thelastpickle.com> wrote: >> LOCAL_JMX=no >> >> if [ "$LOCAL_JMX" = "yes" ]; then >> JVM_OPTS="$JVM_OPTS -Dcassandra.jmx.local.port=$JMX_PORT >> -XX:+DisableExplicitGC" >> else >> JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.port=$JMX_PORT" >> JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.rmi.port=$JMX_PORT" >> JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.ssl=false" >> JVM_OPTS="$JVM_OPTS -Dcom.sun.management.jmxremote.authenticate=false" >> JVM_OPTS="$JVM_OPTS >> >> -Dcom.sun.management.jmxremote.password.file=/etc/cassandra/jmxremote.password" >> fi >> > > Retry with the following option added to your JVM_OPTS: > java.rmi.server.logCalls=true > > This should produce some more information about what is going on. > > > > > -- > ----------------- > Nate McCall > Austin, TX > @zznate > > Co-Founder & Sr. Technical Consultant > Apache Cassandra Consulting > http://www.thelastpickle.com