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From "Peter Anning" <li...@peteranning.com>
Subject mod_jk will only connect to the localhost
Date Mon, 22 Dec 2003 23:23:01 GMT
Hi,

I have configured Apache 1.3 with mod_jk on SuSE Linux SLES8 on a zSeries.

mod_jk will only connect to tomcat on the localhost.

<detail>
One Linux instance runs the Web Server and one runs Tomcat 4.1.27
In order to test the config I installed tomcat on the web server machine and 
mapped the application /examples/ to forward to the local tomcat. this works 
fine. However when changing the config to point to a remote machine (see 
config below) I always get an error in the apache error log. I have used 
tcpdump -i any 'dst port 8009' (see output below) and this always indicates 
that mod_jk is trying to connect to the localhost whatever I put in th 
workers.properties file.

To test network connectivity I have used telnet <ip address> 8009 and I can 
connect to tomcat and see the connection occur in the remote tomcat log 
files. I have also included a tcpdump of this below.

Has anyone seen anything sinmilar.
Best Rgds
Peter


<config>
mod_jk configured (workers.properties) as follows:

worker.list=worker1
worker.worker1.type=ajp13
worker.worker1.host=192.168.13.10
worker.worker1.port=8009
worker.worker1.lbfactor=50
worker.worker1.cachesize=10
worker.worker1.cache_timeout=600
worker.worker1.socket_keepalive=1
worker.worker1.socket_timeout=300
worker.worker1.local_worker=0
############################################################################

apache mount points are configured in httpd.conf

JkWorkersFile /etc/httpd/conf/workers.properties
JkLogFile /var/log/mod_jk.log

JkLogLevel error

JkMount /examples/* worker1
JkMount /examples/*.jsp worker1
###########################################################


tcpdump while accessing the /examples/
www02:/etc # tcpdump -n -i any 'dst port 8009'
16:19:21.496621 127.0.0.1.33194 > 127.0.0.1.8009: S 3501290459:3501290459(0) 
win 32767 <mss 16396,sa
ckOK,timestamp 9268978 0,nop,wscale 0> (DF)
16:19:21.497287 127.0.0.1.33195 > 127.0.0.1.8009: S 3497571144:3497571144(0) 
win 32767 <mss 16396,sa
ckOK,timestamp 9268978 0,nop,wscale 0> (DF)
16:19:21.497733 127.0.0.1.33196 > 127.0.0.1.8009: S 3498859603:3498859603(0) 
win 32767 <mss 16396,sa
ckOK,timestamp 9268978 0,nop,wscale 0> (DF)


telnet 192.168.13.10 8009

www02:/etc # tcpdump -n -i any 'dst port 8009'
tcpdump: WARNING: Promiscuous mode not supported on the "any" device
tcpdump: listening on any
16:19:07.631821 192.168.12.11.33193 > 192.168.13.10.8009: S 
3495439382:3495439382(0) win 5840 <mss 1
460,sackOK,timestamp 9267591 0,nop,wscale 0> (DF) [tos 0x10]
16:19:07.635099 192.168.12.11.33193 > 192.168.13.10.8009: . ack 3495439509 
win 5840 <nop,nop,timesta
mp 9267592 9396807> (DF) [tos 0x10]

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