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Date: Mon, 28 Mar 2016 05:34:12 -0700 (PDT)
From: artnaseef <art@amlinv.com>
To: users@activemq.apache.org
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Subject: Re: ActiveMQ hangs and i don't understand why
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For the JMX: there is a newer setting in the activemq configuration file
that may override the command-line settings; here's a fairly stock example:

        <managementContext>

            <managementContext createConnector="true"/>

        </managementContext>

Check for these and any output during broker starting indicating the
management context failed to start -- if both try to start (via command
line and the config file), typically one fails.  The following can help
track down the state of JMX as well:


   - netstat -an | grep 1616
   - netstat -an | grep LISTEN
   - ps axu | grep java

The first two will show info on the ports open for listening on the
server.  The third shows the actual command-line used to start ActiveMQ.

Note that JMX can be tricky to start behind a firewall because it tends to
allocate a second port dynamically.  Adding a line like the following to
the ACTIVEMQ_SUNJMX_START may fix that issue:

-Dcom.sun.management.jmxremote.rmi.port=1615

Then make sure the same is open through the firewall.  Note that JMX uses a
different method of connection for local processes, so it's entirely
possible that the JVM is not properly configured to allow network
connections.


On Mon, Mar 28, 2016 at 2:23 AM, Hayate [via ActiveMQ] <
ml-node+s2283324n4709982h90@n4.nabble.com> wrote:

> We use standalone broker, because we write our applications in PHP. And we
> don't use custom plugins.
>
> I try configure jmx for jconsole, on localhost all works well, but i can't
> connect to server over vpn.
> I use this manual: http://activemq.apache.org/jmx.html
>
> And here ACTIVEMQ_SUNJMX_START variable in startup script:
>
> ACTIVEMQ_SUNJMX_START=" -Dcom.sun.management.jmxremote.port=1616
> -Dcom.sun.management.jmxremote.ssl=false
> -Dcom.sun.management.jmxremote.password.file=${ACTIVEMQ_BASE}/conf/jmx.password
>
> -Dcom.sun.management.jmxremote.access.file=${ACTIVEMQ_BASE}/conf/jmx.access
>
> -Djava.rmi.server.hostname=vpn_id_address
> -Dcom.sun.management.jmxremote.local.only=false"
>
> What i do wrong?
> Thanks for advices.
>
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