mod_jk errors with tomcat 6.0.20 and Apache 2.0.52

[Matt Turner]

Hi All,

 

I have an existing Apache 2.0.52 installation, and a new tomcat 6.0.20 
installation.

They are both sitting on the same Linux box - uname -a returns the following:

Linux [machine name] 2.6.9-55.ELsmp #1 SMP Fri Apr 20 16:36:54 EDT 2007 x86_64 
x86_64 x86_64 GNU/Linux

 

I'd like if possible to add mod_jk to enable the two to talk to each other, 
without fiddling with the existing tomcat / apache versions.

 

So far I've build mod_jk 1.2.28 from source on the destination machine, and set 
up the following workers:

 

(in apache conf)

<IfModule mod_jk.c>
  JkWorkersFile /etc/httpd/conf/workers.properties

  JkLogFile /etc/httpd/logs/mod_jk.log

  JkLogLevel debug

  JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "

  JkWorkersFile /etc/httpd/conf/workers.properties

  JkLogFile /etc/httpd/logs/mod_jk.log

  JkLogLevel debug

  JkLogStampFormat "[%a %b %d %H:%M:%S %Y] "

  JkRequestLogFormat "%w %V %T"

  JkOptions +ForwardURICompatUnparsed

  JkExtractSSL On
  JkHTTPSIndicator HTTPS
  JkSESSIONIndicator SSL_SESSION_ID
  JkCIPHERIndicator SSL_CIPHER
  JkCERTSIndicator SSL_CLIENT_CERT
</IfModule>

 

(in apache conf, inside a virtual host)

SSLEngine on
SSLCertificateFile /etc/httpd/conf/<filename>

SSLCertificateKeyFile /etc/httpd/conf/<filename>

SSLCACertificateFile /etc/httpd/conf/<filename>

JkMount /* tomcatssl

 

(in workers.properties)

# ------------------------
# First tomcat server
# ------------------------
worker.tomcat1.port=8009
worker.tomcat1.host=10.13.0.218
worker.tomcat1.type=ajp13
worker.tomcat1.lbfactor=50

#---------------------
# SSL tomcat server
#---------------------
worker.tomcatssl.port=8443
worker.tomcatssl.host=10.13.0.218
worker.tomcatssl.type=ajp13
worker.tomcatssl.lbfactor=50

 

 

However when I kick things off and visit a URL matching the above virtual host, 
I get the following error message in mod_jk.log:

 

[Thu Jan 21 18:51:07 2010] [303:2537062720] [info] init_jk::mod_jk.c (3183): 
mod_jk/1.2.28 initialized
[Thu Jan 21 18:51:30 2010] [30428:2537062720] [error] 
ajp_connection_tcp_get_message::jk_ajp_common.c (1172): wrong message format 
0x1503 from 10.13.0.218:8443

 

 

Looking at jk_ajp_common.c I can see the following @ line 1172:

 


if (ae->proto == AJP13_PROTO) {
    if (header != AJP13_SW_HEADER) {

        if (header == AJP14_SW_HEADER) {
            jk_log(l, JK_LOG_ERROR,
                   "received AJP14 reply on an AJP13 connection from %s",
                   jk_dump_hinfo(&ae->worker->worker_inet_addr, buf));
        }
        else {
            jk_log(l, JK_LOG_ERROR,
                   "wrong message format 0x%04x from %s",
                   header, jk_dump_hinfo(&ae->worker->worker_inet_addr,
                                         buf));
        }

 

 

So it seems the error has something do with AJP13 headers not being as expected.

 

Could anyone confirm that the 3 version numbers (2.0.52, 1.2.28, 6.0.20) are 
compatible together ?

 

If so - any ideas what might be going on here ?

 

 

 

thanks,

 

matt.
                                          
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