On 05/18/2012 01:35 PM, Tyler Hobbs wrote:
Your firewall rules need to allow TCP traffic on any port >= 1024 for
JMX to work. It initially connects on port 7199, but then the client
is asked to reconnect on a randomly chosen port.
You can open the firewall, SSH to the node first, or set up something
like this:
http://simplygenius.com/2010/08/jconsole-via-socks-ssh-tunnel.html
On Fri, May 18, 2012 at 1:31 PM, ramesh <dbgroup...@gmail.com
<mailto:dbgroup...@gmail.com>> wrote:
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
--
Tyler Hobbs
DataStax <http://datastax.com/>
It helped.
Thanks Tyler for the info and the link to the post.
Regards
Ramesh
