Hello:
I've configured the mod_jk with the default configuration of 1.2.30 version,
at the moment, the problem has not appeared , when it will appear I'll see
that this solution works well.
Thank you so much for your help.
-----Mensaje original-----
De: Rainer Jung [mailto:rainer.jung@xxxxxxxxxxx]
Enviado el: viernes, 15 de octubre de 2010 11:26
Para: users@xxxxxxxxxxxxxxxx
Asunto: Re: Reserving a thread for request against mod_jk in
apache server.
On 14.10.2010 17:49, Oscar Celada wrote:
>
> I have installed apache httpd 2.2.10 with mod_jk 1.2.28 and tomcat
> 6.0.29 (a cluster with six nodes).
>
> Some times apache has all his threads busy (512), in theses moments I
> want to change same parameter in the jk module (I know which is the
> tomcat of my cluster that cause this problem and I want check out this
> node from my cluster).
> The problem is that the apache is collapsed and It doesn't response
> that the request that I do against the jk module (I suppose that is
> because apache doesn't has got one free thread).
>
> Is there any way to book one thread for request against mod_jk in the
> apache server?
No, either you have to detect the situation in advance, so that not all
threads are aleady blocked - which under high load might be difficult - or
you have to switch to other solutions:
- configure better timeouts for mod_jk, so that those threads don't stay
stuck. See for example the sample configuration contained in the mod_jk
1.2.30 source tarball download. The sample configuration in older mod_jk
downloads is pretty outdated.
- set activation for the broken Tomcat to "stopped" in the
workers.properties and do a hard "restart" of Apache (which will also stop
all other running requests, but in such a situation it is unlikely that the
web server is still able to serve requests).
In case there's more questions: the right list to discuss mod_jk is the
Tomcat users mailing list.
To subscribe, send mail to
users-subscribe@xxxxxxxxxxxxxxxxx
Regards,
Rainer
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