Hello,
Thanks for replying back.
I cannot see any specal requests but there maybe high load. I can see 193
active threads.
We are in the process of upgrading mod_jk version to 1.2.19.
Here is some of the information you wanted. Please let me know if you need
more information.
cat /proc/version
Linux version 2.6.9-34.ELsmp ([EMAIL PROTECTED]) (gcc
version 3.4.5 20051201 (Red Hat 3.4.5-2))
worker.properties
worker.list=jkstatus,consWorker,myWorker
# Configure Load Balancer status manager.
worker.jkstatus.type=status
worker.consWorker.port=8009
worker.consWorker.host=localhost
worker.consWorker.type=ajp13
worker.consWorker.socket_timeout=120
# Define first worker for failover
worker.myWorker.port=8010
worker.myWorker.host=localhost
worker.myWorker.type=ajp13
worker.myWorker.socket_timeout=120
apache_mod_jk.conf file
# conf/include/apache_mod_jk.conf
# global settings files for the mod jk connector
LoadModule jk_module libexec/apache_mod_jk.so
# Where to find workers.properties
JkWorkersFile /home/apache/conf/apache/mod_include/worker.properties
# Where to put jk logs
JkLogFile logs/apache/mod_jk.log
# Set the jk log level [debug/error/info]
JkLogLevel info
# Select the log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
# JkRequestLogFormat set the request format
JkRequestLogFormat "%w %V %T"
# JkOptions indicate to send SSL KEY SIZE,
JkOptions +ForwardURICompat -ForwardDirectories
# Configure Load Balancer status manager.
#JkWorkerProperties worker.jkstatus.type=status
# status for later load balancing
<Location /jkmanager/>
JkMount /jkstatus/*
Order deny,allow
Deny from all
Allow from 127.0.0.1
</Location>
JkMount /jkmanager/* jkstatus
On 12/16/06, Rainer Jung <[EMAIL PROTECTED]> wrote:
Hi,
this looks strange. Could you please post your config and give a couple
of details about your environment (OS+Version). Is there any pattern
related to the problem (special requests, high load, ...)?
It would be really good, if you could update mod_jk to 1.2.19 or 1.2.20
which will most likely be available middle of next week.
Regards,
Rainer
Shekar Tippur schrieb:
> Hello
>
> We are getting unable to get the free endpoint and eventually resulting
> in a 500 (internal server error).
>
> We are using apache 1.3.37 and mod_jk version is 1.2.15. Due to many
> reasons,
> we are not in a position to upgrade wither of these packages.
>
> [Fri Dec 08 01:34:09 2006] [18477:0000] [warn]
> ajp_get_endpoint::jk_ajp_common.c (2138): Unable to get the free
> endpoint for worker myWorker from 1 slots [Fri Dec 08 01:34:09 2006]
> [18477:0000] [info] ajp_get_endpoint::jk_ajp_common.c (2152): can't
> find free endpoint [Fri Dec 08 01:34:09 2006] [18477:0000] myWorker
> 0.000088
>
> Under these situations, we also see that either jboss threads are
> processing
> for a long time OR a particular thread is idle for a relatively long
time.
>
> I would really appreciate if someone can explain why this particular
error
> occurs and how to remediate the problem. Currently we are restarting
both
> jboss and apache but we are not able to get to the root cause of the
> problem.
>
> People who have got the same error earlier have suggested that we need
> to increase the cachesize OR the connection_pool_size of the worker.
>
> but mod_jk documentation says that it is not recommended to use
> cachesize more than 1 for apache version 1.3.x.
>
> I would really appreciate if anyone can suggest a remediation for this
> issue.
>
> Shekar
>
> -----------------
> cachesize
>
> This directive has been deprecated since 1.2.16.
> Cachesize defines the number of connections made to the AJP backend
> that are maintained as a connection pool. It will limit the number of
> those connection that each web server child process can make.
>
> Cachesize property is used only for multi threaded web servers such as
> Apache 2.0 (worker), IIS and Netscape. The cachesize property should
> reflect the number of threads per child process. JK will discover the
> number of threads per child process on Apache 2 web server with
> worker-mpm and set its default value to match the ThreadsPerChild
> Apache directive. For IIS the default value is 10. For other web
> servers this value has to be set manually.
>
> Do not use cachesize with values higher then 1 on Apache 2.x prefork or
> Apache 1.3.x!
>
> ---------------
>
> Shekar
>
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