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Posted to user@cassandra.apache.org by "Alaa Zubaidi (PDF)" <al...@pdf.com> on 2016/04/19 21:40:09 UTC
nodetool -h fails Connection refused
Hi,
I am trying to run nodetool remotely. but its not working:
I am running Cassandra 2.2.5 on CentOS 6.
listen_address: is set to <host IP>
rpc_address: is set to 0.0.0.0
broadcast_rpc_address: is set to <host IP>
I changed the following in cassadnra-env.sh
JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=<hostname>"
-Dcom.sun.management.jmxremote.port=7199
-Dcom.sun.management.jmxremote.ssl=false
-Dcom.sun.management.jmxremote.authenticate=false
"nodetool -h <hostname or ip> -p <port> status" results in:
failed to connect to 'hostname' - Connection Exception: 'Connection refused"
netstat -nl | grep 7199
tcp 0 0 127.0.0.1:7199 0.0.0.0:* LISTEN
ONLY "nodetool -h localhost" works
Any idea how to fix it?
Thanks,
Alaa
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Re: nodetool -h fails Connection refused
Posted by "Alaa Zubaidi (PDF)" <al...@pdf.com>.
Thanks Nate...
It works now..
On Wed, Apr 20, 2016 at 8:05 AM, Nate McCall <na...@thelastpickle.com> wrote:
> You need to set LOCAL_JMX=false
>
> It will then read the rest of this stanza:
>
> https://github.com/apache/cassandra/blob/cassandra-2.2/conf/cassandra-env.sh#L284-L288
>
> Using the defaults above as-is, you will need to add JMX authentication.
> Details are here:
>
> https://docs.datastax.com/en/cassandra/2.2/cassandra/configuration/secureNodetoolSSL.html
>
> A lot of this can be controlled with system properties as well:
> http://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html
>
> The default config files for JMX authentication and access included in the
> JVM also have extensive details in the comments:
> $JAVA_HOME/jre/lib/management/jmxremote.access
> $JAVA_HOME/jre/lib/management/jmxremote.password.template
>
>
>
> On Tue, Apr 19, 2016 at 8:40 PM, Alaa Zubaidi (PDF) <al...@pdf.com>
> wrote:
>
>> Hi,
>>
>> I am trying to run nodetool remotely. but its not working:
>> I am running Cassandra 2.2.5 on CentOS 6.
>> listen_address: is set to <host IP>
>> rpc_address: is set to 0.0.0.0
>> broadcast_rpc_address: is set to <host IP>
>>
>> I changed the following in cassadnra-env.sh
>> JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=<hostname>"
>> -Dcom.sun.management.jmxremote.port=7199
>> -Dcom.sun.management.jmxremote.ssl=false
>> -Dcom.sun.management.jmxremote.authenticate=false
>>
>> "nodetool -h <hostname or ip> -p <port> status" results in:
>> failed to connect to 'hostname' - Connection Exception: 'Connection
>> refused"
>>
>> netstat -nl | grep 7199
>> tcp 0 0 127.0.0.1:7199 0.0.0.0:* LISTEN
>>
>> ONLY "nodetool -h localhost" works
>>
>> Any idea how to fix it?
>>
>> Thanks,
>> Alaa
>>
>>
>> *This message may contain confidential and privileged information. If it
>> has been sent to you in error, please reply to advise the sender of the
>> error and then immediately permanently delete it and all attachments to it
>> from your systems. If you are not the intended recipient, do not read,
>> copy, disclose or otherwise use this message or any attachments to it. The
>> sender disclaims any liability for such unauthorized use. PLEASE NOTE that
>> all incoming e-mails sent to PDF e-mail accounts will be archived and may
>> be scanned by us and/or by external service providers to detect and prevent
>> threats to our systems, investigate illegal or inappropriate behavior,
>> and/or eliminate unsolicited promotional e-mails (“spam”). If you have any
>> concerns about this process, please contact us at *
>> *legal.department@pdf.com* <le...@pdf.com>*.*
>
>
>
>
> --
> -----------------
> Nate McCall
> Austin, TX
> @zznate
>
> Co-Founder & Sr. Technical Consultant
> Apache Cassandra Consulting
> http://www.thelastpickle.com
>
--
Alaa Zubaidi
PDF Solutions, Inc.
333 West San Carlos Street, Suite 1000
San Jose, CA 95110 USA
Tel: 408-283-5639
fax: 408-938-6479
email: alaa.zubaidi@pdf.com
--
*This message may contain confidential and privileged information. If it
has been sent to you in error, please reply to advise the sender of the
error and then immediately permanently delete it and all attachments to it
from your systems. If you are not the intended recipient, do not read,
copy, disclose or otherwise use this message or any attachments to it. The
sender disclaims any liability for such unauthorized use. PLEASE NOTE that
all incoming e-mails sent to PDF e-mail accounts will be archived and may
be scanned by us and/or by external service providers to detect and prevent
threats to our systems, investigate illegal or inappropriate behavior,
and/or eliminate unsolicited promotional e-mails (“spam”). If you have any
concerns about this process, please contact us at *
*legal.department@pdf.com* <le...@pdf.com>*.*
Re: nodetool -h fails Connection refused
Posted by Nate McCall <na...@thelastpickle.com>.
You need to set LOCAL_JMX=false
It will then read the rest of this stanza:
https://github.com/apache/cassandra/blob/cassandra-2.2/conf/cassandra-env.sh#L284-L288
Using the defaults above as-is, you will need to add JMX authentication.
Details are here:
https://docs.datastax.com/en/cassandra/2.2/cassandra/configuration/secureNodetoolSSL.html
A lot of this can be controlled with system properties as well:
http://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html
The default config files for JMX authentication and access included in the
JVM also have extensive details in the comments:
$JAVA_HOME/jre/lib/management/jmxremote.access
$JAVA_HOME/jre/lib/management/jmxremote.password.template
On Tue, Apr 19, 2016 at 8:40 PM, Alaa Zubaidi (PDF) <al...@pdf.com>
wrote:
> Hi,
>
> I am trying to run nodetool remotely. but its not working:
> I am running Cassandra 2.2.5 on CentOS 6.
> listen_address: is set to <host IP>
> rpc_address: is set to 0.0.0.0
> broadcast_rpc_address: is set to <host IP>
>
> I changed the following in cassadnra-env.sh
> JVM_OPTS="$JVM_OPTS -Djava.rmi.server.hostname=<hostname>"
> -Dcom.sun.management.jmxremote.port=7199
> -Dcom.sun.management.jmxremote.ssl=false
> -Dcom.sun.management.jmxremote.authenticate=false
>
> "nodetool -h <hostname or ip> -p <port> status" results in:
> failed to connect to 'hostname' - Connection Exception: 'Connection
> refused"
>
> netstat -nl | grep 7199
> tcp 0 0 127.0.0.1:7199 0.0.0.0:* LISTEN
>
> ONLY "nodetool -h localhost" works
>
> Any idea how to fix it?
>
> Thanks,
> Alaa
>
>
> *This message may contain confidential and privileged information. If it
> has been sent to you in error, please reply to advise the sender of the
> error and then immediately permanently delete it and all attachments to it
> from your systems. If you are not the intended recipient, do not read,
> copy, disclose or otherwise use this message or any attachments to it. The
> sender disclaims any liability for such unauthorized use. PLEASE NOTE that
> all incoming e-mails sent to PDF e-mail accounts will be archived and may
> be scanned by us and/or by external service providers to detect and prevent
> threats to our systems, investigate illegal or inappropriate behavior,
> and/or eliminate unsolicited promotional e-mails (“spam”). If you have any
> concerns about this process, please contact us at *
> *legal.department@pdf.com* <le...@pdf.com>*.*
--
-----------------
Nate McCall
Austin, TX
@zznate
Co-Founder & Sr. Technical Consultant
Apache Cassandra Consulting
http://www.thelastpickle.com