Remy Maucherat wrote:

> Hi,
> 
> I proposed that to Costin a few days ago, but got not so enthusiastic
> comments.
> The idea would be to add a new monitor servlet to the manager webapp. It
> would generate data similar to http://www.apache.org/server-status. It
> would mostly (exclusively ?) use JMX to retrieve the components
> statistics.

I'm not so enthusiastic for few reasons. We still have a lot of work 
to do in our core area - and it seems the ammount of time most people
have is limited. 

+1 on extending the manager servlet to also display monitoring data,
 and to use the new JMX model - if 5.0 will use recommend using
JMX to control tomcat, the manager should be an example of that instead
of using the internal APIs.
/manager is also close to /server-status ( or /jkstatus ). 

There are 3 JMX consoles available ( each JMX impl. has one ). A generic 
console would be nice - but it doesn't belong to tomcat ( maybe in commons).


> That's not a high priority task for me, but something I'd like to get
> done eventually, and I'm looking for some feedback. I understand that
> there are existing agents for JMX that can be used to provide more
> powerful remote access to the statistics (HTTP, RMI, etc), but these
> tools do not have the ability to give a user a quick and comprehensive
> look at the Tomcat status (although they allow much more complex
> operations, and it's not my objective to replace them).

For remote statistics - I added a small experimental remote-JMX mechansim 
for mod_jk ( which obviously can't support direct JMX ), and I plan to
extend it and merge it in modeler. 

IMO any generic JMX effort should be in commons ( modeler or a different
component ). 

Costin





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