Hello everybody,

I am new to this forum. I am trying to cluster two Tomcat 5.5.9 with Apache HTTP server 2.2.4 and Connector mod_jk.so for Apache HTTP server 2.2.4 in Windows XP PC of mine.

I have installed all in c:/ drive like c:/tomcat, c:/tomcat2 and c:/Apache2.2.
I placed the mod_jk.so file into the modules folder of Apache HTTP server 2.2.4.

1) I have configured two Tomcat in the way mentioned below:-

1st Tomcat's server.xml:-
a) <Server port="8005" shutdown="SHUTDOWN">
b) <Connector port="8088" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />
c) <Connector port="8009" redirectPort="8443" protocol="AJP/1.3" />

2nd Tomcat's server.xml:-
a) <Server port="8025" shutdown="SHUTDOWN">
b) <Connector port="8018" maxHttpHeaderSize="8192"
maxThreads="150" minSpareThreads="25" maxSpareThreads="75"
enableLookups="false" redirectPort="8443" acceptCount="100"
connectionTimeout="20000" disableUploadTimeout="true" />
c) <Connector port="8019" redirectPort="8443" protocol="AJP/1.3" />


2) I have created workers.properties file in Apache HTTP server's conf folder.

workers.properties:-
workers.tomcat_home=C:/tomcat

workers.java_home=C:/jdk1.5.0_07

worker.list=worker1,worker2

worker.worker1.port=8009
worker.worker1.host=localhost
worker.worker1.port=ajp13

worker.worker2.port=8019
worker.worker2.host=localhost
worker.worker2.port=ajp13


3) I have written below mentioned lines into Apache HTTP server's httpd.conf file just after LoadModule declaration the in conf folder.

LoadModule jk_module modules/mod_jk.so

#Path to workers.properties
JkWorkersFile C:/Apache2.2/conf/workers.properties

#Path to jk logs
JkLogFile C:/Apache2.2/mod_jk.log

#Jk log level[debug/error/info]
JkLogLevel info

#Jk log format
JkLogStampFormat "[%a %b %d %H:%M:%S %Y]"

#JkOptions for forwarding
JkOptions +ForwardKeySize +ForwardURICompat -ForwardDirectories

#JkRequestLogFormat set the request format
JkRequestLogFormat "%w %V %T"

JkMount /jsp-examples worker1
JkMount /jsp-examples/* worker1

JkMount /tomcat-docs worker2
JkMount /tomcat-docs/* worker2

Now the problem is when I start the Apache HTTP server 2.2.4 I can see errors in the mod_jk.log file given below.

[Wed Feb 04 11:24:23 2009][4004:2960] [warn] jk_map.c (404): Duplicate key 'worker.worker1.port' detected - previous value '8009' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][4004:2960] [warn] jk_map.c (404): Duplicate key 'worker.worker2.port' detected - previous value '8019' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][4004:2960] [error] jk_ajp_common.c (1997): invalid host and port localhost 0
[Wed Feb 04 11:24:23 2009][4004:2960] [error] jk_worker.c (161): validate failed for worker1
[Wed Feb 04 11:24:23 2009][4004:2960] [error] jk_worker.c (259): failed to create worker worker1
[Wed Feb 04 11:24:23 2009][4004:2960] [warn] jk_map.c (404): Duplicate key 'worker.worker1.port' detected - previous value '8009' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][4004:2960] [warn] jk_map.c (404): Duplicate key 'worker.worker2.port' detected - previous value '8019' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][4004:2960] [error] jk_ajp_common.c (1997): invalid host and port localhost 0
[Wed Feb 04 11:24:23 2009][4004:2960] [error] jk_worker.c (161): validate failed for worker1
[Wed Feb 04 11:24:23 2009][4004:2960] [error] jk_worker.c (259): failed to create worker worker1
[Wed Feb 04 11:24:23 2009][3248:1844] [warn] jk_map.c (404): Duplicate key 'worker.worker1.port' detected - previous value '8009' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][3248:1844] [warn] jk_map.c (404): Duplicate key 'worker.worker2.port' detected - previous value '8019' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][3248:1844] [error] jk_ajp_common.c (1997): invalid host and port localhost 0
[Wed Feb 04 11:24:23 2009][3248:1844] [error] jk_worker.c (161): validate failed for worker1
[Wed Feb 04 11:24:23 2009][3248:1844] [error] jk_worker.c (259): failed to create worker worker1
[Wed Feb 04 11:24:23 2009][3248:1844] [warn] jk_map.c (404): Duplicate key 'worker.worker1.port' detected - previous value '8009' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][3248:1844] [warn] jk_map.c (404): Duplicate key 'worker.worker2.port' detected - previous value '8019' will be overwritten with 'ajp13'.
[Wed Feb 04 11:24:23 2009][3248:1844] [error] jk_ajp_common.c (1997): invalid host and port localhost 0
[Wed Feb 04 11:24:23 2009][3248:1844] [error] jk_worker.c (161): validate failed for worker1
[Wed Feb 04 11:24:23 2009][3248:1844] [error] jk_worker.c (259): failed to create worker worker1


But the server starts successfully. After that I start two Tomcat web servers and they also starts successfully.

Now I open two browser and give a link like:- localhost/jsp-examples and localhost/tomcat-docs but it shows 500 internal server error in both the browser. I checked the access.log file in logs folder of Apache HTTP server 2.2.4 and I found this:-

127.0.0.1 - - [04/Feb/2009:11:32:50 +0530] "GET / HTTP/1.1" 200 44
127.0.0.1 - - [04/Feb/2009:11:33:47 +0530] "GET /jsp-examples HTTP/1.1" 500 536
127.0.0.1 - - [04/Feb/2009:11:34:02 +0530] "GET /tomcat-docs HTTP/1.1" 500 536


Please correct me if anything is wrong here. Help needed.

Thanks in advance........
Tanmoy