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From "Jim Riordan" <jim.rior...@uk.easynet.net>
Subject Problem with mod_jk and multiple workers.
Date Tue, 11 Jul 2006 16:12:58 GMT

Good afternoon,

I am trying to configure apache to send requests to multiple instances
of tomcat using mod_jk. I am using
Redhat 9
Apache/2.0.40
Tomcat-5.5.17

and have tried

jakarta-tomcat-connectors-jk-1.2.6
jakarta-tomcat-connectors-1.2.14.1
jakarta-tomcat-connectors-1.2.15

I can get httpd to send requests to tomcat through mod_jk fine, but only
if tomcat is listening on port 8009. It doesn't seem to matter what I
put in my workers.properties file, mod_jk doesn't seem to be reading it.

-------------------------------------------------------------------
Snippet from httpd.conf:
-------------------------------------------------------------------
LoadModule jk_module /usr/lib/httpd/modules/mod_jk.so
JkWorkersFile "/home/httpd/conf/my_workers.properties"
JkLogFile     "/var/log/httpd/my_mod_jk.log"
JkLogLevel   debug
JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "
JkOptions     +ForwardKeySize +ForwardURICompat -ForwardDirectories
JkRequestLogFormat     "%w %V %T"
-------------------------------------------------------------------

-------------------------------------------------------------------
Contents of my_workers.properties
-------------------------------------------------------------------
worker.list=worker1,worker2,worker3
# Set properties for worker1
worker.worker1.type=ajp13
worker.worker1.host=localhost
worker.worker1.port=8009
# Set properties for worker2
worker.worker2.type=ajp13
worker.worker2.host=localhost
worker.worker2.port=8109
# Set properties for worker3
worker.worker3.type=ajp13
worker.worker3.host=localhost
worker.worker3.port=8209
--------------------------------------------------------------------

--------------------------------------------------------------------
Output in my_mod_jk.log (running with 1.2.14.1)
--------------------------------------------------------------------
[Tue Jul 11 16:00:52 2006] [5589:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5590:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5591:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5592:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5593:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5594:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5595:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5596:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:52 2006] [5582:16384] [debug]
jk_cleanup_shmem::mod_jk.c (1747): Shmem cleanup
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug] do_shm_open::jk_shm.c
(240): Truncated shared memory to 66560
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug] do_shm_open::jk_shm.c
(272): Initialized shared memory size=66560 free=65536 addr=0x40ff4000
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
do_shm_open_lock::jk_shm.c (182): Opened shared memory lock
/etc/httpd/logs/jk-runtime-status.lock
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug] init_jk::mod_jk.c
(2350): Initialized shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
uri_worker_map_open::jk_uri_worker_map.c (323): rule map size is 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
build_worker_map::jk_worker.c (236): creating worker ajp13
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
wc_create_worker::jk_worker.c (141): about to create instance ajp13 of
ajp13
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
wc_create_worker::jk_worker.c (154): about to validate and init ajp13
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_validate::jk_ajp_common.c (1806): worker ajp13 contact is
'localhost:8009'
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1895): setting socket keepalive to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1934): setting socket timeout to -1
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1938): setting socket buffer size to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1942): setting connection recycle timeout to
0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1946): setting cache timeout to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1950): setting connect timeout to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1954): setting reply timeout to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1958): setting prepost timeout to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1962): setting recovery opts to 0
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_init::jk_ajp_common.c (1966): setting number of retries to 3
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
ajp_create_endpoint_cache::jk_ajp_common.c (1843): setting connection
cache size to 1
[Tue Jul 11 16:00:54 2006] [5582:16384] [debug]
build_worker_map::jk_worker.c (248): removing old ajp13 worker
[Tue Jul 11 16:00:54 2006] [5866:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5866:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5866:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5867:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5867:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5867:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5868:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5868:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5868:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5869:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5869:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5869:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5870:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5870:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5870:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5871:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5871:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5871:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5872:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5872:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5872:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
[Tue Jul 11 16:00:54 2006] [5873:16384] [debug] do_shm_open::jk_shm.c
(200): Shared memory is already open
[Tue Jul 11 16:00:54 2006] [5873:16384] [debug] jk_child_init::mod_jk.c
(2306): Attached shm:/etc/httpd/logs/jk-runtime-status
[Tue Jul 11 16:00:54 2006] [5873:16384] [debug] jk_child_init::mod_jk.c
(2316): Initialized mod_jk/1.2.14
--------------------------------------------------------------------

As you can see, in the log output - mod_jk insists on creating a single
worker called "ajp13" of type "ajp13" listening on "localhost:8009" -
despite what is in the workers.properties file. Can anyone assist?


Jim

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