mod_jk: Auto reloading workers.properties file.

[jo...@opencloud.com]

Hi all,

I've written a small patch for mod_jk that automaticly reloads the
workers.properties file when ever it is changed.

Currently it only works with apache-1.3 but it trivial to make it work
with the others.

Is anyone interested in using this patch?

Jonathan.

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Re: mod_jk: Auto reloading workers.properties file.

[jo...@opencloud.com]

On Thu, Feb 14, 2002 at 04:43:38PM -0500, Matt Egyhazy wrote:
> how does this affect performance?  i think that is the major concern with
> all 'reloading' features.

I'm not sure... :) I only just got it working, so I'm still testing it.

Every time an endpoint to a tomcat is requested I stat the
workers.properties file, if it has changed, the load-balancer
reconfigures itself. The reconfiguration does cause a small delay
response to any incoming requests as mod_jk has to open a new socket to
the desired tomcat.

Put it this way, I think it is quicker to reload the load-balanced
workers than to do a graceful apache restart. It is also cool to edit
the properties file, save it, and watch an immediate change in the
results coming to the script hammering your website... :)

I'm thinking about adding a minimum time between stats on the
workers.properties file. :)

Note: Currently the code only supports reconfiguring workers that are
under a load-balancer.

I guess this functionality is only required if you are frequently changing
the workers.properties file for some reason.

Anyone got any other ideas/requests and more importantly advice?

Jonathan.

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Re: mod_jk: Auto reloading workers.properties file.

[Matt Egyhazy <mw...@virginia.edu>]

how does this affect performance?  i think that is the major concern with
all 'reloading' features.

matt
----- Original Message -----
From: <jo...@opencloud.com>
To: <to...@jakarta.apache.org>
Sent: Thursday, February 14, 2002 3:56 PM
Subject: mod_jk: Auto reloading workers.properties file.


> Hi all,
>
> I've written a small patch for mod_jk that automaticly reloads the
> workers.properties file when ever it is changed.
>
> Currently it only works with apache-1.3 but it trivial to make it work
> with the others.
>
> Is anyone interested in using this patch?
>
> Jonathan.
>
> --
> To unsubscribe:   <ma...@jakarta.apache.org>
> For additional commands: <ma...@jakarta.apache.org>
> Troubles with the list: <ma...@jakarta.apache.org>
>


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