Re: Connecting the HTTP Server and Tomcat

David Smith Thu, 08 Apr 2004 06:31:11 -0700

Hi.

I realize you're looking at jsvc right now and thinking about removing the Apache component altogether, but I'll take a shot at this anyway.

AddModule appears to have been dropped in Apache 2.0.xx, so just leave it out. I didn't use it in my environment and things are working.

Here's most likely to be an issue: Did you name your worker in workers.properties 'ajp13'? You should probably change your JkMount to read:

JkMount /portal/* ajp13worker # or whatever you named the ajp13 worker

If you did name your worker 'ajp13', I would at least change the name to something else just to remove confusion.

This may or may not affect you, but I'll throw it out there in case some reading this finds it useful. In my config, I was setting things up for a virtual host environtment and things only worked when JkWorkersFile, JkLogFile, and JkLogLevel stayed out of my <VirtualHost> block. Only JkMount was included in the <VirualHost> block. I'm not sure whether that's normal or not, but it's my experience.

--David

Wilson, Allen wrote:

No a problem...I am using 2.0.48..

I have the LoadModule line and the other directives here...they are

LoadModule jk_module /usr/WWW/libexec/mod_jk.so
JkWorkersFile /usr/tomcat-4.1.18/conf/jk/workers.properties
JkLogFile     /usr/tomcat-4.1.18/logs/mod_jk.log
JkLogLevel    debug
JkMount      /portal/* ajp13
I was unable to put in the AddModule line because I did not see it (the
mod_jk.c file) loaded when I did the apachectl -l. I am working on
getting that loaded now
-----Original Message----- From: David Smith [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 07, 2004 3:19 PM To: Tomcat Users List Subject: Re: Connecting the HTTP Server and Tomcat

Hi.

Can you post the relevant parts of your httpd.conf file? Also, I missed

this in the thread if it was mentioned, but what version of Apache are you working with? I ask, because it looks like from my setup that Apache ditched the AddModule directive in Apache 2.0.xx.

LoadModule needs to be in your httpd.conf file before the AddModule directive under Apache 1.3.x as in:
# All the other LoadModule directive here.....
LoadModule jk_module  modules/mod_jk.so
# Further down, all the AddModule directives here....
AddModule mod_jk.c
It'd be helpful to see the JkWorkersFile directive, JkMount directive, and the contents of the jk workers file.

--David

Just tack it on to the end of the list of LoadModule directives. Then use AddModule at the end of the list of AddModule directives.

Wilson, Allen wrote:

I think I may have found the problem....

I tried to add the line AddModule mod_jk.c in the HTTP server config

and
it gave an error. I could not locate the file within my HTTP or Tomcat
installation.....even though I have the mod_jk.so file in the libexec
directory.
-----Original Message----- From: Jon Wingfield [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 07, 2004 2:35 PM To: Tomcat Users List Subject: Re: Connecting the HTTP Server and Tomcat

Assuming the connector is working, what effect does adding an
additional

mapping of

/portal ajp13

to your existing

/portal/* ajp13

mapping have?

I just double-checked on our dev box where jk is definitely up. I got a
404 from apache for /<mapping> but /<mapping>/stuff got routed through to tomcat.

Jon

Wilson, Allen wrote:

No you are not way off...at least not from my point of view because

that

is what I thought would work. But unless I specify the port (http://myserver.com:8080/portal) it will not get there...

It makes me think that the connector is not function correctly but I

do

not know how to tell..when I check the running ports I see the 8009

port
running but it does not hand to Tomcat

-----Original Message----- From: Jon Wingfield [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 07, 2004 2:09 PM To: Tomcat Users List Subject: Re: Connecting the HTTP Server and Tomcat
I may be way off but...
I don't think
http://myserver.com/portal
maps to
/portal/* ajp13
http://myserver.com/portal/
or
http://myserver.com/portal/whatever.jsp
probably will, though.
Give it a go, may work,

Jon

Wilson, Allen wrote:
Bill..thanks for the reply...
I will read through the link you provide but isn't that what the
connector is supposed to do.
My understanding what that the Apache HTTP server would detect what
the
request was (Java or not) and pass it on to Tomcat.
Is this not what the specification of /portal/* ajp13 in the
configuration does.
This is what I got from the document at:

http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jk2/jk.quickhowto.htm
l
Here is a little from one of the pages in that area... (
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/jk2/jk/aphowto.html )
In a nutshell a web server is waiting for client HTTP requests. When these requests arrive the server does whatever is needed to serve the requests by providing the necessary content.

Adding a servlet container may somewhat change this behavior. Now the web server needs also to perform the following:

Load the servlet container adapter library and initialize it (prior
to

serving requests). When a request arrives, it needs to check and see if a certain

request

belongs to a servlet, if so it needs to let the adapter take the

request

and handle it. The adapter on the other hand needs to know what requests it is going

to

serve, usually based on some pattern in the request URL, and to where

to

direct these requests.

Is this not correct...or am I misunderstanding it

-----Original Message----- From: Bill Bruns [mailto:[EMAIL PROTECTED] Sent: Wednesday, April 07, 2004 12:26 PM To: Tomcat Users List Subject: RE: Connecting the HTTP Server and Tomcat

Allen,

do you have the web server configured to throw the requests over to Tomcat? In other words, have either Proxy support or else URL Rewriting

turned

on in the web server? Otherwise your HTTP requests default to port 80, so they will be

eaten
by the web server and never reach Tomcat, since Tomcat is listening on ports that the HTTP requests do not come

to
by
default.
Have you looked at
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/proxy-howto.html
- Bill
-----Original Message-----
From: Wilson, Allen [mailto:[EMAIL PROTECTED]
Sent: Wednesday, April 07, 2004 8:54 AM
To: Tomcat Users List
Subject: RE: Connecting the HTTP Server and Tomcat
Okay...that looks similar to the tomcat 4 information I have....is
your
connector working correctly?
-----Original Message-----
From: Emerson Cargnin [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 06, 2004 6:06 PM
To: Tomcat Users List
Subject: Re: Connecting the HTTP Server and Tomcat
My configuration is for tomcat 5:
<Service name="Catalina">
  <Connector acceptCount="100" connectionTimeout="20000"
disableUploadTimeout="true" port="8080" redirectPort="8443">
  </Connector>
  <Connector port="8009"
             enableLookups="false" redirectPort="8443" debug="0"
             protocol="AJP/1.3" />
  <Engine defaultHost="localhost" name="Catalina">
    <Host appBase="webapps" name="localhost">
      <Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_log." suffix=".txt" timestamp="true"/>
...
...
Wilson, Allen wrote:

Here are the lines.....

<Connector className="org.apache.catalina.connector.http.HttpConnector" port="8080" minProcessors="5"

maxProcessors="75"
                   enableLookups="true" redirectPort="8443"
                   acceptCount="100" debug="0"
connectionTimeout="20000" />
            
            <Connector
className="org.apache.ajp.tomcat4.Ajp13Connector" port="8009"
minProcessors="5" maxProcessors="75" acceptCount="10" debug="0"/>
Let me know if there is something that is incorrect.....
-----Original Message-----
From: Emerson Cargnin [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 06, 2004 4:28 PM
To: Tomcat Users List
Subject: Re: Connecting the HTTP Server and Tomcat
You said you can connect through port 8009 through the browser??? The jk protocol is not http, so if the configuration was allright
you
can't connect through 8009 as http. Maybe the error is at your
server.xml...
Wilson, Allen wrote:

Thanks but this is on a Windows system and will not help...I am on
a
Solaris and I have looked at documents like this before and they

still

do not give me a definitive way of setting everything and testing

it...

Right now I have the HTTP server (port 80), Tomcat (port 8080), and

the

connector (8009) running. I even looked at the netstat to see if

each

port was available...and they were.

When a do the home page request (http://myserver.com) it works fine...but if I request the page for the Jetspeed Portal (http://myserver.com/portal), I get an error. If I request the

portal
page through port 8080 it works fine. If I request the same page on

8009

it works fine.

In all cases there were no entries in my mod_jk.log.

I am looking for something that will outline the steps for me on a Solaris machine or at least give me a better way to diagnose what I

am
doing wrong....
-----Original Message-----
From: kwilding [mailto:[EMAIL PROTECTED]
Sent: Tuesday, April 06, 2004 10:55 AM
To: 'Tomcat Users List'
Subject: RE: Connecting the HTTP Server and Tomcat
http://www.greenfieldresearch.ca/technical/jk2_config.html

This was a really good starting point. Ignore the fact it talks
abut
windows, I imstaled on SuSE8.2 using apache2.0.48 and both tomcat 4

and

5 Kevan
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Re: Connecting the HTTP Server and Tomcat

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