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From Juho Mäkinen <juho.maki...@gmail.com>
Subject Re: NodeTool won't connect remotely
Date Mon, 30 Aug 2010 16:30:47 GMT
I think that JMX needs additional ports to function correctly. Try to
disable all firewalls between the client and the server so that client
can connect to any port in the server and try again.

 - Juho Mäkinen

On Mon, Aug 30, 2010 at 7:07 PM, Allan Carroll <allanca@gmail.com> wrote:
> Hi,
>
> I'm trying to manage my cassandra cluster from a remote box and having issues getting
nodetool to connect. All the machines I'm using are running on AWS.
>
> Here's what happens when I try:
>
> /opt/apache-cassandra-0.6.4/bin/nodetool -h xxx.xxx.xxx.143 -p 10036 ring
> Error connecting to remote JMX agent!
> java.rmi.ConnectException: Connection refused to host: xxx.xxx.xxx.143; nested exception
is:
>        java.net.ConnectException: Connection timed out
>
>
> When I'm local to a box (Ubuntu 10.04) running Cassandra, I can connect fine via both
127.0.0.1 and external ip (xxx.xxx.xxx.143). I can telnet into the jmx port from an external
machine fine:
>
> telnet xxx.xxx.xxx.143 10036
> Trying xxx.xxx.xxx.143...
> Connected to xxx.xxx.xxx.143.
> Escape character is '^]'.
>
> I already added the -Djava.rmi.server.hostname parameter to the java runtime, but it
didn't seem to affect anything.
>
> /usr/bin/jsvc -home /usr/lib/jvm/java-6-openjdk/jre -pidfile /var/run/cassandra.pid -errfile
&1 -outfile /var/log/cassandra/output.log -cp /usr/share/cassandra/antlr-3.1.3.jar:/usr/share/cassandra/apache-cassandra-0.6.3.jar:/usr/share/cassandra/avro-1.2.0-dev.jar:/usr/share/cassandra/clhm-production.jar:/usr/share/cassandra/commons-cli-1.1.jar:/usr/share/cassandra/commons-codec-1.2.jar:/usr/share/cassandra/commons-collections-3.2.1.jar:/usr/share/cassandra/commons-lang-2.4.jar:/usr/share/cassandra/google-collections-1.0.jar:/usr/share/cassandra/hadoop-core-0.20.1.jar:/usr/share/cassandra/high-scale-lib.jar:/usr/share/cassandra/ivy-2.1.0.jar:/usr/share/cassandra/jackson-core-asl-1.4.0.jar:/usr/share/cassandra/jackson-mapper-asl-1.4.0.jar:/usr/share/cassandra/jline-0.9.94.jar:/usr/share/cassandra/json-simple-1.1.jar:/usr/share/cassandra/libthrift-r917130.jar:/usr/share/cassandra/log4j-1.2.14.jar:/usr/share/cassandra/slf4j-api-1.5.8.jar:/usr/share/cassandra/slf4j-log4j12-1.5.8.jar:/etc/cassandra:/usr/share/java/commons-daemon.jar
-Xmx4G -Xms128M -Djava.rmi.server.hostname=xxx.xxx.xxx.143 -Dcassandra -Dstorage-config=/etc/cassandra
-Dcom.sun.management.jmxremote.port=10036 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false
org.apache.cassandra.thrift.CassandraDaemon
>
>
> netstat shows that I'm still bound to IP6
>
> netstat -nap|grep 10036
> tcp6       0      0 :::10036                :::*                
   LISTEN      29277/jsvc
>
>
> And, now I'm at an impasse. Any help would be greatly appreciated.
>
> Thanks
> -Allan
>
>

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