Apache Tomcat issue 2007-01-10 - By Sharpless, Frank
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Hello,
I have a very strange issue regarding my Apache/Tomcat configuration.
The symptom is that when a user is trying to connect to a non balanced
web application (i.e. /setup or /stech) the initial request can take up
to 120 seconds to respond; any request after that replies very quickly,
usually within 1-2 seconds. My environment consists of both load
balanced and non balanced servers, all using Apache to load balance.
The only clue I have is that my load balanced web applications (i.e.
/abc and /ls ) do not have this issue; only the non balanced web
applications that are affected.
My Apache server version is Apache/2.2.0 (Win32) mod_jk/1.2.15
mod_ssl/2.2.0 OpenSSL/0.9.8a DAV/2. I am currently running Apache Tomcat
5.5.12 Server. Tomcat is using is Windows 2000 service pack 4; Apache is
running on Windows 2003 x64 service pack 1.
My httpd.conf VirturalHost section contains the mounts:
### Balanced Mounts
JkMount /abc applb
JkMount /abc/* applb
JkMount /ls cslb
JkMount /ls/* cslb
## Non Balanced Mounts
JkMount /setup setup
JkMount /setup/* setup
JkMount /stech stech
JkMount /stech/* stech
My remoteworker.properties file contains the following configuration:
ps=/
worker.list=stech,setup,cslb,applb
##
## Web Application Load Balancer
##
worker.cslb.type=lb
worker.cslb.balanced_workers=cmd01,cmd02
worker.applb.type=lb
worker.applb.balanced_workers=app01,app02
##
## Web Application Not Load Balanced
##
worker.stech.port=8999
worker.stech.host=10.5.10.4
worker.stech.type=ajp13
worker.setup.port=8999
worker.setup.host=10.5.10.10
worker.setup.type=ajp13
##
## App Workers
##
worker.app01.port=8999
worker.app01.host=10.5.10.3
worker.app01.type=ajp13
worker.app01.prepost_timeout=500
worker.app01.lbfactor=10
worker.app02.port=8999
worker.app02.host=10.5.10.4
worker.app02.type=ajp13
worker.app02.prepost_timeout=500
worker.app02.lbfactor=10
##
## Command Workers
##
worker.cmd01.port=8999
worker.cmd01.host=10.5.10.3
worker.cmd01.type=ajp13
worker.cmd01.prepost_timeout=500
worker.cmd01.lbfactor=10
worker.cmd02.port=8999
worker.cmd02.host=10.5.10.4
worker.cmd02.type=ajp13
worker.cmd02.prepost_timeout=500
worker.cmd02.lbfactor=10
Thanks for any help you can provide.
Regards,
A. Frank Sharpless
Manager, Application Development
fsharpless@(protected)
678.397.1602
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