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Posted to users@tomcat.apache.org by Ben Katz <be...@gmail.com> on 2009/12/08 13:34:10 UTC
Re: How To Get MBean Server of Apache Tomcat.
Hi,
I use ManagementFactory.getPlatformMBeanServer() from within Apache Tomcat
and from a regular JAR file (outside the scope of apache).
I think (And correct me if im wrong) I'm getting different MBean Servers.
My question is - How Do I reach the Tomcat mbean server from outside or
alternatively, how do I register the MBeans from inside apache with the
"outside world" MBean server.
The first option (Reach the Tomcat mbean server from the outside) is
preferable.
Thanks!!
Re: How To Get MBean Server of Apache Tomcat.
Posted by Cyrille Le Clerc <cl...@xebia.fr>.
Hello Ben,
You are right, Tomcat, with these standard JVM JMX parameters,
creates a new MBeanServer that is not the platform mbean server and
that does not contain the JVM Mbeans (1). I didn't take the time to
figure out wether it was the JVM or Tomcat behavior.
On production, we use Hyperic declaring two servers : a "JVM
server" and a "Apache Tomcat 6.0 Server". I must admit it is not the
most elegant but it does the job :-)
For my JMX troubleshooting on Tomcat, I use JVisualVM (with the
MBeans plugin) and a few JSP pages I drop in my web apps :
http://cyrille-leclerc.googlecode.com/svn/trunk/cyrille/src/main/webapp/tools/jmx/mbeans.jsp
http://cyrille-leclerc.googlecode.com/svn/trunk/cyrille/src/main/webapp/tools/jmx/mbean.jsp
http://cyrille-leclerc.googlecode.com/svn/trunk/cyrille/src/main/webapp/tools/jmx/platformMbeans.jsp
I mostly use the two firsts jsps as I mostly monitor Tomcat and
application specific MBeans, not very much JVM MBeans (except via
Hyperic).
Hope this helps,
Cyrille
--
Cyrille Le Clerc
cleclerc@xebia.fr
http://blog.xebia.fr
(1) : java.lang:type=Runtime, java.lang:type=OperatingSystem,
java.lang:type=Threading, java.lang:type=Memory
On Tue, Dec 8, 2009 at 4:07 PM, Ben Katz <be...@gmail.com> wrote:
> Hi Cyrille,
>
> Thanks for you reply.
> I have actually done what you suggested but that does not relate to the
> problem.
>
> To better Illustrate I will give this example:
>
> If I run the code below from a servlet in Tomcat I will get a list of
> domains:
> String[] domains =
> ManagementFactory.getPlatformMBeanServer().getDomains();
>
> for (int i =0; i < domains.length;i++)
> {
> System.out.println(domains[i]);
> }
>
> If I run the same code from a generic java application I will get a
> different list of domains.
>
> This means that the platform MBean server is different inside Tomcat.
> What I would like to do is to reach that server, probably by replacing
> "ManagementFactory.getPlatformMBeanServer().getDomains();" with something
> else.
>
> Thanks again,
> Ben.
>
>
> On Tue, Dec 8, 2009 at 15:00, Cyrille Le Clerc <cl...@xebia.fr> wrote:
>
>> Hello Ben,
>>
>> Tomcat relies on the out-of-the-box feature of the JVM to make the
>> MBeanServer accessible to other processes (possibly located on other
>> servers).
>>
>> You have to add the following parameters to the Tomcat startup
>> command line :
>> -Dcom.sun.management.jmxremote \
>> -Dcom.sun.management.jmxremote.port=6969 \
>> -Dcom.sun.management.jmxremote.ssl=false \
>> -Dcom.sun.management.jmxremote.authenticate=false
>>
>> JMX listen port 6969 is configurable.
>>
>> All details at http://tomcat.apache.org/tomcat-6.0-doc/monitoring.html
>>
>> Hope this helps,
>>
>> Cyrille
>>
>> --
>> Cyrille Le Clerc
>> cleclerc@xebia.fr
>> http://blog.xebia.fr
>>
>> On Tue, Dec 8, 2009 at 1:34 PM, Ben Katz <be...@gmail.com> wrote:
>> >
>> > Hi,
>> > I use ManagementFactory.getPlatformMBeanServer() from within Apache
>> Tomcat
>> > and from a regular JAR file (outside the scope of apache).
>> > I think (And correct me if im wrong) I'm getting different MBean Servers.
>> > My question is - How Do I reach the Tomcat mbean server from outside or
>> > alternatively, how do I register the MBeans from inside apache with the
>> > "outside world" MBean server.
>> > The first option (Reach the Tomcat mbean server from the outside) is
>> > preferable.
>> > Thanks!!
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
>> For additional commands, e-mail: users-help@tomcat.apache.org
>>
>>
>
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Re: How To Get MBean Server of Apache Tomcat.
Posted by Ben Katz <be...@gmail.com>.
Hi Cyrille,
Thanks for you reply.
I have actually done what you suggested but that does not relate to the
problem.
To better Illustrate I will give this example:
If I run the code below from a servlet in Tomcat I will get a list of
domains:
String[] domains =
ManagementFactory.getPlatformMBeanServer().getDomains();
for (int i =0; i < domains.length;i++)
{
System.out.println(domains[i]);
}
If I run the same code from a generic java application I will get a
different list of domains.
This means that the platform MBean server is different inside Tomcat.
What I would like to do is to reach that server, probably by replacing
"ManagementFactory.getPlatformMBeanServer().getDomains();" with something
else.
Thanks again,
Ben.
On Tue, Dec 8, 2009 at 15:00, Cyrille Le Clerc <cl...@xebia.fr> wrote:
> Hello Ben,
>
> Tomcat relies on the out-of-the-box feature of the JVM to make the
> MBeanServer accessible to other processes (possibly located on other
> servers).
>
> You have to add the following parameters to the Tomcat startup
> command line :
> -Dcom.sun.management.jmxremote \
> -Dcom.sun.management.jmxremote.port=6969 \
> -Dcom.sun.management.jmxremote.ssl=false \
> -Dcom.sun.management.jmxremote.authenticate=false
>
> JMX listen port 6969 is configurable.
>
> All details at http://tomcat.apache.org/tomcat-6.0-doc/monitoring.html
>
> Hope this helps,
>
> Cyrille
>
> --
> Cyrille Le Clerc
> cleclerc@xebia.fr
> http://blog.xebia.fr
>
> On Tue, Dec 8, 2009 at 1:34 PM, Ben Katz <be...@gmail.com> wrote:
> >
> > Hi,
> > I use ManagementFactory.getPlatformMBeanServer() from within Apache
> Tomcat
> > and from a regular JAR file (outside the scope of apache).
> > I think (And correct me if im wrong) I'm getting different MBean Servers.
> > My question is - How Do I reach the Tomcat mbean server from outside or
> > alternatively, how do I register the MBeans from inside apache with the
> > "outside world" MBean server.
> > The first option (Reach the Tomcat mbean server from the outside) is
> > preferable.
> > Thanks!!
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
Re: How To Get MBean Server of Apache Tomcat.
Posted by Cyrille Le Clerc <cl...@xebia.fr>.
Hello Ben,
Tomcat relies on the out-of-the-box feature of the JVM to make the
MBeanServer accessible to other processes (possibly located on other
servers).
You have to add the following parameters to the Tomcat startup
command line :
-Dcom.sun.management.jmxremote \
-Dcom.sun.management.jmxremote.port=6969 \
-Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.authenticate=false
JMX listen port 6969 is configurable.
All details at http://tomcat.apache.org/tomcat-6.0-doc/monitoring.html
Hope this helps,
Cyrille
--
Cyrille Le Clerc
cleclerc@xebia.fr
http://blog.xebia.fr
On Tue, Dec 8, 2009 at 1:34 PM, Ben Katz <be...@gmail.com> wrote:
>
> Hi,
> I use ManagementFactory.getPlatformMBeanServer() from within Apache Tomcat
> and from a regular JAR file (outside the scope of apache).
> I think (And correct me if im wrong) I'm getting different MBean Servers.
> My question is - How Do I reach the Tomcat mbean server from outside or
> alternatively, how do I register the MBeans from inside apache with the
> "outside world" MBean server.
> The first option (Reach the Tomcat mbean server from the outside) is
> preferable.
> Thanks!!
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