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From "David Graff" <ph...@mindspring.com>
Subject Re: MBeans dev
Date Thu, 07 Feb 2002 21:44:49 GMT
Craig,

Thank you for the explanation of that.  Very cool deal.  The server.xml is
pretty ugly to edit manually.


----- Original Message -----
From: "Craig R. McClanahan" <craigmcc@apache.org>
To: "Tomcat Developers List" <tomcat-dev@jakarta.apache.org>
Sent: Thursday, February 07, 2002 16:18
Subject: Re: MBeans dev


>
>
> On Thu, 7 Feb 2002, Renato wrote:
>
> > Date: Thu,  7 Feb 2002 18:14:59
> > From: Renato <webmaster@cienciapura.com.br>
> > Reply-To: Tomcat Developers List <tomcat-dev@jakarta.apache.org>
> > To: tomcat-dev@jakarta.apache.org
> > Subject: MBeans dev
> >
> > Hi all,
> >
> > I've seen a lot of development regarding MBean lately and I'm a little
lost
> > about what are the new functionality that Catalina will have. Could
> > somebody explain what MBean are ( and for what they are useful ) or give
> > some directives, where I can read about ? ( I know there is plenty of
> > material about Message Beans in J2EE but I imagine these MBeans for
Tomcat
> > are somehow different, aren't they ? )
> >
>
> The "MBean" that is referred to here is a "managed bean" from the Java
> Management Extensions (JMX) APIs.  You can read about it (and get the
> spec) from <http://java.sun.com/products/JavaManagement>.
>
> The basic idea is that each component object within Catalina (Engine,
> Host, Context, Valve, Logger, Realm, and so on) has a corresponding MBean
> through which it can be created, configured, and removed on-the-fly.  In
> addition, the JMX APIs have the notion of being able to save the
> configuration state in such a way that it can be reused the next time you
> start up the server.
>
> For Tomcat, we're using the JMX APIs in the administration webapp that
> will, when it's done, let you never have to touch the server.xml file
> again -- all of the configuration can be done interactively through a
> tool.  The fact that we're doing it all through MBeans also means that
> managing a Tomcat 4 instance can also be easily built in to any other
> management tool that knows how to speak JMX.
>
> > Thanks for the patience
> > Renato.
> >
>
> Craig McClanahan
>
>
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