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Date: Fri, 18 May 2012 13:31:36 -0500
From: ramesh <dbgroup444@gmail.com>
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To: user@cassandra.apache.org
Subject: unable to nodetool to remote EC2
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I updated the cassandra-env.sh
$JMX_HOST="10.20.30.40"
JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=$JMX_HOST"

netstat -ltn shows port 7199 is listening.

I tried both public and private IP for connecting but neither helps.

However, I am able to connect locally from within server.

  I get this error when I remote:

Error connection to remote JMX agent! java.rmi.ConnectException: 
Connection refused to host: 10.20.30.40; nested exception is: 
java.net.ConnectException: Connection timed out at 
sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601) at 
sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198) 
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184) 
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:110) at 
javax.management.remote.rmi.RMIServerImpl_Stub.newClient(Unknown Source) 
at 
javax.management.remote.rmi.RMIConnector.getConnection(RMIConnector.java:2329) 
at 
javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:279) 
at 
javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:248) 
at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:144) at 
org.apache.cassandra.tools.NodeProbe.(NodeProbe.java:114) at 
org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:623) Caused by: 
java.net.ConnectException: Connection timed out at 
java.net.PlainSocketImpl.socketConnect(Native Method) at 
java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) at 
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213) at 
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) at 
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at 
java.net.Socket.connect(Socket.java:529) at 
java.net.Socket.connect(Socket.java:478) at 
java.net.Socket.(Socket.java:375) at java.net.Socket.(Socket.java:189) 
at 
sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22) 
at 
sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128) 
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595) ... 
10 more

Any help appreciated.
Regards
Ramesh

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    I updated the cassandra-env.sh <br>
    $JMX_HOST="10.20.30.40"<br>
    JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=$JMX_HOST"<br>
    <br>
    netstat -ltn shows port 7199 is listening. <br>
    <br>
    I tried both public and private IP for connecting but neither helps.<br>
    <br>
    However, I am able to connect locally from within server.<br>
    <br>
    &nbsp;I get this error when I remote:<br>
    <br>
    Error connection to remote JMX agent!
    java.rmi.ConnectException: Connection refused to host: 10.20.30.40;
    nested exception is: java.net.ConnectException: Connection timed out
    at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601)
    at
    sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
    at
    sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
    at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:110) at
    javax.management.remote.rmi.RMIServerImpl_Stub.newClient(Unknown
    Source) at
    javax.management.remote.rmi.RMIConnector.getConnection(RMIConnector.java:2329)

    at
    javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:279)
    at
    javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:248)

    at org.apache.cassandra.tools.NodeProbe.connect(NodeProbe.java:144)
    at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:114)
      at org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:623)
      Caused by: java.net.ConnectException: Connection timed out at
      java.net.PlainSocketImpl.socketConnect(Native Method) at
      java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:351) at
      java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:213)
      at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:200) at
      java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366) at
      java.net.Socket.connect(Socket.java:529) at
      java.net.Socket.connect(Socket.java:478) at java.net.Socket.<init>(Socket.java:375)

        at java.net.Socket.<init>(Socket.java:189) at
          sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)

          at
          sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)

          at
          sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
          ... 10 more</init></init></init><br>
    <br>
    Any help appreciated.<br>
    Regards<br>
    Ramesh<br>
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