Hi Konstantin,

I can try to upgrade to tomcat 6.0.39 or tomcat 7...It should be a simple 
enough upgrade....would possibly help out a bit.

I have the worker.basic.socket_keepalive=True set so according to the tomcat 
connector documentation, this should help with the firewall dropping open 
connections. When I have this problem and check the AJP threads in PSI-Probe 
for each tomcat instance, for example, its always well under the maximum 
threads. Perhaps I should be looking at AJP sessions instead?...I'm not sure 
there is a way to maximize or minimize this.

-Isaac

-----Original Message-----
From: Konstantin Kolinko [mailto:knst.koli...@gmail.com] 
Sent: Tuesday, February 25, 2014 3:33 PM
To: Tomcat Users List
Subject: Re: tomcat 6 refuses mod_jk connections after server runs for a couple 
of days

2014-02-24 23:27 GMT+04:00 Isaac Gonzalez <igonza...@autoreturn.com>:
> Hello all,
>
> I'm running tomcat 6.0.32

Can you upgrade to 6.0.39 or 7.0.52?

> on Cent OS 6 with 2 front end apache load balancers with a firewall in 
> between the tomcat and load balancers

A firewall between Apache HTTPD Server and Apache Tomcat?

Sometimes a firewall may drop a TCP connection without properly terminating is. 
So your Tomcat might still think that it has 500 AJP connections open and 
refuse new ones.

There have been several discussions on such issues over the years.

An old thread,
http://marc.info/?t=121818607600002&r=1&w=2

Best regards,
Konstantin Kolinko

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