Re: [OT] mod_jk seems to fail if not in debug mode

[babu <ba...@gmail.com>]

Hi,

Do you have firewall configured between Apache+mod_jk and tomcat servers, if
yes then try setting following parameters.


worker.tomcat61.cachesize=25
worker.tomcat61.cache_timeout=20
worker.tomcat61.socket_timeout=20
worker.tomcat61.socket_keepalive=1

and also let me know what is timeout paramenters in sever.xml. It could be
20000 miliseconds so I put 20 seconds in mod_jk.

Please past server.xml and workers.properties (which you did).

With regards,

Babu Satasiya
Cisco System Inc.


Dave Gardner wrote:
> 
> mod_jk seems to fail if not in debug mode
> 
> I've set up my Apache/Tomcat servers and it seems to be working. However,
> in my httpd.conf if I use "JkLogLevel info" I get the following messages
> in my mod_jk.log file:
> 
> [Tue Feb 13 08:08:45 2007] [24399:46784] [info] 
> ajp_process_callback::jk_ajp_common.c (1433): Writing to client aborted or
> client network problems
> 
> [Tue Feb 13 08:08:45 2007] [24399:46784] [info] 
> ajp_service::jk_ajp_common.c (1832): (tomcat72) request failed, because of
> client write error without recovery in send loop attempt=0
> 
> [Tue Feb 13 08:08:45 2007] [24399:46784] [info]  service::jk_lb_worker.c
> (979): unrecoverable error 200, request failed. Client failed in the
> middle of request, we can't recover to another instance.
> 
> [Tue Feb 13 08:08:45 2007] [24399:46784] [info]  jk_handler::mod_jk.c
> (2135): Aborting connection for worker=tomcats
> 
> These repeat, not for every request but it cycles through all four Tomcat
> workers about every 10-20 minutes or so. Users also are getting page
> cannot be displayed, timeouts, etc.
> 
> If I change it to "JkLogLevel debug" I get tons of information but no
> errors. Users tend to run a little slow (probably because of all the
> logging taking place), but it seems to work.
> 
> Any help here would be appreciated.
> 
> I am running:
> 
> Linux RedHat Fedora 4.2
> Apache 2.0.54-10
> Apache Tomcat 5.5.12
> Tomcat Connectors (mod_jk) 1.2.20
> 
> 2 physical servers, each with dual procesors
> Each server runs 2 instances of Tomcat, each with it's own AJP1.3
> connector
> Apache HTTPD runs on one server running virtual hosts.
> Each host routes to mod_jk using a "JkMount  /* tomcats" directive
> My workers.properties file looks like this:
> 
> # workers.properties start
> ps=/
> worker.list=tomcat61, tomcat62, tomcat71, tomcat72, tomcats, jkstatus
> # DTBS6 Tomcat 1
> worker.tomcat61.port=8009
> worker.tomcat61.host=192.168.6.41
> worker.tomcat61.type=ajp13
> worker.tomcat61.lbfactor=100
> # DTBS6 Tomcat 2
> worker.tomcat62.port=8010
> worker.tomcat62.host=192.168.6.41
> worker.tomcat62.type=ajp13
> worker.tomcat62.lbfactor=100
> # DTBS7 Tomcat 1
> worker.tomcat71.port=8009
> worker.tomcat71.host=192.168.6.42
> worker.tomcat71.type=ajp13
> worker.tomcat71.lbfactor=100
> # DTBS7 Tomcat 2
> worker.tomcat72.port=8010
> worker.tomcat72.host=192.168.6.42
> worker.tomcat72.type=ajp13
> worker.tomcat72.lbfactor=100
> # Load Balancer worker
> worker.tomcats.type=lb
> worker.tomcats.balance_workers=tomcat61, tomcat71, tomcat62, tomcat72
> # Status Worker
> worker.jkstatus.type=status
> # workers.properties end
> 
> 
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