The code for nodetool appears to just pass the host value through to the NodeProbe. Was there anything else in the stack trace ?
If you use the host name of the machine rather than ip what happens? cassandra-env.sh includes a link to this page about getting JMX running with firewalls http://blogs.sun.com/jmxetc/entry/troubleshooting_connection_problems_in_jconsole Perhaps the info on java.rmi.server.hostname may be helpful Hope that helps. Aaron On 14 Dec 2010, at 21:36, Arjan van Ham wrote: > > I have a cluster with three nodes, version 0.7.0 RC2. Each node has dual > NIC's, eth0 to the internet and eth1 to a private network (192.168.1.xxx). > The outside NIC on each node is frewalled using iptables, only port 22 is > allowed through. My cassandra.yaml configuration file refers only to the > internal hostnames that resolve to 192.168.1.xxx addresses. > > Most of my Cassandra installation works fine, except for a few nodetool > commands. It seems that they are trying to access the servers over the > outside (firewalled) NIC and thus fail. If I disable the firewall they work > fine. > > For example: > > [cassan...@node11 ~]$ nodetool -h 192.168.1.153 decommission > Error connecting to remote JMX agent! > java.rmi.ConnectException: Connection refused to host: 72.52.199.70; 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: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:115) > at org.apache.cassandra.tools.NodeProbe.<init>(NodeProbe.java:91) > > > And if I disable the firewall on the remote node it works right away. > > > Any ideas anyone? > > Thanks.
