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From Raj Saini <rajsa...@emerging-trade.com>
Subject Re: MBeans?
Date Tue, 01 Oct 2002 19:36:43 GMT
Hi,

MBean stands for Management Bean. They are JMX stuff. JMX is a Java 
specification for Remote Management of applications. More and more 
applicaitons are now supporting JMX API. Tomcat uses the mx4j JMX 
implementation. mx4j is a opensource project hosted at sourceforge.

You can program your application JMX way and use the Sun RI or mx4j for 
administring them. The administration task you can perform are, stop, 
start, restart etc.

If you are trying to provide custom Realm support for, I will suggest 
you to use the LDAP based realm. That would be the cool stuff for the 
companies you work for.

Raj

Randy Secrist wrote:
> I am building a custom user system which extends that which tomcat 4.1.12
> did - basically an extended version of the UserDatabaseRealm and
> UserDatabase - to meet a companies specific security needs.  As such, any
> classes I write for this go into the server/lib directory.  I noticed I
> could disable JMX support and everything worked fine... - but since this is
> the first I have heard about JMX, I would like to know more about what JMX's
> role is in J2EE systems.  Funny how new features in Tomcat somehow get me
> introduced to new java libraries I never knew about...
> 
> I made the decision to do this for many reasons - but primarily because I
> like the new administration features of 4.1.12, and (except for encoding
> issues in realms), I like the catalina interface.
> 
> I have heard a lot of good things about JBoss - mostly integrating various
> J2EE components - however I am not yet familiar enough with ejb's, and jms
> to use them in a production environment.  Eventually, when I get out of
> school, I will probably delve into it full time - but until then I need to
> just figure out how to best provide good service to the companies that
> supply my fledling family their bread and butter.  :)
> 
> Randy
> 
> ----- Original Message -----
> From: "Shapira, Yoav" <Yoav.Shapira@mpi.com>
> To: "Tomcat Users List" <tomcat-user@jakarta.apache.org>
> Sent: Tuesday, October 01, 2002 6:40 AM
> Subject: RE: MBeans?
> 
> 
> Howdy,
> What kind of bean what you like to add so that tomcat knows about it?
> 
> In the (current) tomcat world, there are two kind of MBeans: its own and
> yours.  Yours are under your webapp, visible only to you, and tomcat
> doesn't want to have anything to do with them.  Its own MBeans are
> visible only to it, and you shouldn't have anything to do with them.
> This might change in the future.
> 
> JBoss supports a nice dynamic MBean model.  It may be more suitable for
> your task.  Which goes back to the original question, what exactly are
> you trying to do?
> 
> Yoav Shapira
> Millennium ChemInformatics
> 
> 
> 
>>-----Original Message-----
>>From: Randy Secrist [mailto:tomcat@secristfamily.com]
>>Sent: Monday, September 30, 2002 11:01 PM
>>To: Tomcat Users List
>>Subject: MBeans?
>>
>>
>>Is there a way to append to the information kept in the MBean
> 
> descriptor
> 
>>without having to modify the file in catalina.jar?  i.e. - is there a
> 
> way
> 
>>to dynamically add MBeans so that TC knows about them at run time?
>>
>>Does anyone know what I am talking about, or is this more geared for
> 
> the
> 
>>developer's group?
>>
>>Randy Secrist
> 
> 
> 
> 
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