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From "Ian Lea" <ian....@gmail.com>
Subject Re: [users@httpd] Apache 2.2.8 with mod_jk : timeout in reply pong
Date Tue, 13 Jan 2009 09:42:01 GMT
What tomcat connector is using port 40593? Since you can connect to it
from a browser it sounds like HTTP.  Apache/mod_jk needs to connect to
an ajp tomcat connector.


--
Ian.


On Tue, Jan 13, 2009 at 12:27 AM, Mohamed Rafi Sirajuddeen
<sirajuddeen@me.com> wrote:
> Hi,
>
> I have Apache 2.2 installed (on Unix), and I am using mod_jk for load balancing between
application server instances.
>
> I have configured httpd_VHostSSL.conf to redirect requests which come to the webserver.
Additionally, using mod_jk and workers.properties, I am load balancing the requests between
the application servers.
>
> When I start the apache servers, they get started successfully w/o any issues, But when
I connect to the application from the browser, the mod_jk logs show that the webserver is
unable to connect to the app-server instance. Following is the error message I am getting
from logs:
>
> [Tue Jan 13 00:19:40 2009] [69898:0000] [debug] jk_open_socket::jk_connect.c (335): socket
TCP_NODELAY set to On
> [Tue Jan 13 00:19:40 2009] [69898:0000] [debug] jk_open_socket::jk_connect.c (433): trying
to connect socket 9 to xx.xx.xx.xx:40593
> [Tue Jan 13 00:19:40 2009] [69898:0000] [debug] jk_open_socket::jk_connect.c (459): socket
9 connected to xx.xx.xx.xx:40593
> [Tue Jan 13 00:19:40 2009] [69898:0000] [debug] ajp_connect_to_endpoint::jk_ajp_common.c
(850): Connected socket 9 to (xx.xx.xx.xx:40593)
> [Tue Jan 13 00:19:40 2009] [69898:0000] [debug] ajp_connection_tcp_send_message::jk_ajp_common.c
(896): sending to ajp13 pos=4 len=5 max=16
> [Tue Jan 13 00:19:40 2009] [69898:0000] [debug] ajp_connection_tcp_send_message::jk_ajp_common.c
(896): 0000    12 34 00 01 0A 00 00 00 00 00 00 00 00 00 00 00  - .4..............
> [Tue Jan 13 00:20:00 2009] [69898:0000] [info]  ajp_handle_cping_cpong::jk_ajp_common.c
(810): timeout in reply pong
> [Tue Jan 13 00:20:00 2009] [69898:0000] [info]  ajp_send_request::jk_ajp_common.c (1273):
(node2) error connecting to the backend server (errno=60)
> [Tue Jan 13 00:20:00 2009] [69898:0000] [info]  ajp_service::jk_ajp_common.c (1941):
(node2) sending request to tomcat failed,  recoverable operation attempt=2
> [Tue Jan 13 00:20:00 2009] [69898:0000] [error] ajp_service::jk_ajp_common.c (1953):
(node2) Connecting to tomcat failed. Tomcat is probably not started or is listening on the
wrong port
> [Tue Jan 13 00:20:00 2009] [69898:0000] [debug] ajp_done::jk_ajp_common.c (2286): recycling
connection pool slot=0 for worker node2
>
> However, I am able to telnet to the IP:port from the command prompt, and also able to
directly connect to the tomcat instance from the browser (http://xx.xx.xx.xx:40593)
>
> Also, when the webserver logs say request timeout, I check the tomcat logs during the
same duration, I dont even check the requests hitting the tomcat server. Both the apache server
and tomcat server are in the same subnet, and hence there is no issue of ACLs etc..
>
> Any help would be greatly appreciated.
>
> Regards
> Siraj M
>
>
>
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