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From 박상길 <hayarobip...@gmail.com>
Subject Strange Connection error of nodetool
Date Wed, 22 Jun 2011 09:02:26 GMT
Hi.

I'm running 5 cassandra nodes. Say, the addresses are 112.234.123.111 ~ 112.234.123.115; the
real address is different. 
When I run nodetool, the one node of address 112.234.123.112 has failed to connect. Showing
error message like this. 

iPark:~ hayarobi$ nodetool --host 112.234.123.112 ring
Error connection to remote JMX agent!
java.rmi.ConnectException: Connection refused to host: 122.234.123.112; nested exception is:


The host to connect address differ! I had tried to query 112.* but, the nodetool tried to
connect 122.*. It happened just one machine. All other machines works fine. 
And I can connect to 112.234.123.112 by cassandra-cli or other tools using other port (such
as 22 of ssh, 80 of http). It has trouble only on nodetool.

Does anyone has an idea? 

I'll paste the full stack trace below.

iPark:~ hayarobi$ nodetool --host 112.234.123.111 ring
Address         Status State   Load            Owns    Token                             
         
                                                       136112946768375000000000000000000000000
    
112.234.123.111  Up     Normal  725.01 KB       20.00%  0                                
          
112.234.123.112  Up     Normal  725.93 KB       20.00%  34028236692093800000000000000000000000
     
112.234.123.113  Up     Normal  728.2 KB        20.00%  68056473384187700000000000000000000000
     
112.234.123.114  Up     Normal  713.1 KB        20.00%  102084710076282000000000000000000000000
    
112.234.123.115  Up     Normal  722.67 KB       20.00%  136112946768375000000000000000000000000
    
iPark:~ hayarobi$ nodetool --host 112.234.123.115 ring
Address         Status State   Load            Owns    Token                             
         
                                                       136112946768375000000000000000000000000
    
112.234.123.111  Up     Normal  725.01 KB       20.00%  0                                
          
112.234.123.112  Up     Normal  725.93 KB       20.00%  34028236692093800000000000000000000000
     
112.234.123.113  Up     Normal  728.2 KB        20.00%  68056473384187700000000000000000000000
     
112.234.123.114  Up     Normal  713.1 KB        20.00%  102084710076282000000000000000000000000
    
112.234.123.115  Up     Normal  722.67 KB       20.00%  136112946768375000000000000000000000000
    
iPark:~ hayarobi$ nodetool --host 112.234.123.114 ring
Address         Status State   Load            Owns    Token                             
         
                                                       136112946768375000000000000000000000000
    
112.234.123.111  Up     Normal  725.01 KB       20.00%  0                                
          
112.234.123.112  Up     Normal  725.93 KB       20.00%  34028236692093800000000000000000000000
     
112.234.123.113  Up     Normal  728.2 KB        20.00%  68056473384187700000000000000000000000
     
112.234.123.114  Up     Normal  713.1 KB        20.00%  102084710076282000000000000000000000000
    
112.234.123.115  Up     Normal  722.67 KB       20.00%  136112946768375000000000000000000000000
    
iPark:~ hayarobi$ nodetool --host 112.234.123.112 ring
Error connection to remote JMX agent!
java.rmi.ConnectException: Connection refused to host: 122.234.123.112; nested exception is:

        java.net.ConnectException: Connection refused
        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:2327)
        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:137)
        at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:107)
        at org.apache.cassandra.tools.NodeCmd.main(NodeCmd.java:511)
Caused by: java.net.ConnectException: Connection refused
        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:432)
        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


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