CODEWITHSUNDEEP
javacassandra
user3262424
user3262424

Reputation: 7479

Cassandra -- nodetool is not working on another machine?

I have a cassandra cluster on 4 nodes (each running ubuntu 10.04 and cassandra 0.7.4). All nodes are connected using a SWITCH, and each is assigned a STATIC IP ADDRESS (no DNS is involved).

The node seems to be functioning properly (status is 'Normal', all nodes are up etc).

The problem is this: nodetool works, yet it only works when the nodetool command is run on the same node. When I try to run nodetool from STATIC_IP = 192.168.0.253 on STATIC_IP = 192.168.0.4 I get the following error:

(note: machine 's3789' has the static IP of 192.168.0.253)

user@s3789:/opt/cassandra/apache-cassandra-0.7.4$ bin/nodetool -host 192.168.0.4 ring

Error connection to remote JMX agent! java.rmi.ConnectException: Connection refused to host: 127.0.1.1; nested exception is: java.net.ConnectException: Connection refused at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:619) at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:216) at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:202) at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:128) at javax.management.remote.rmi.RMIServerImpl_Stub.newClient(Unknown Source) at javax.management.remote.rmi.RMIConnector.getConnection(RMIConnector.java:2343) at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:296) at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:267) 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.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:327) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:193) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:384) at java.net.Socket.connect(Socket.java:546) at java.net.Socket.connect(Socket.java:495) at java.net.Socket.<init>(Socket.java:392) at java.net.Socket.<init>(Socket.java:206) at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:40) at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:146) at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:613)

Any hints how to solve this?

Upvotes: 4

Views: 5903

Answers (2)

jbellis
jbellis

Reputation: 19377

from conf/cassandra-env.sh:

# add this if you're having trouble connecting:
# JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=<public name>"
# 
# see 
# https://blogs.oracle.com/jmxetc/entry/troubleshooting_connection_problems_in_jconsole
# for more on configuring JMX through firewalls, etc. (Short version:
# get it working with no firewall first.)

Upvotes: 15

Saurabh
Saurabh

Reputation: 305

Check if you started rmiregistry before starting the server

rmiregistry &

Getting started with RMI

Upvotes: 0

Related Questions