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From Rainer Jung <>
Subject Re: Apache 2.2.3 Tomcat 5.5.20 - mod_jk or proxy?
Date Thu, 16 Nov 2006 14:13:48 GMT
Hi Michael,

I didn't want to shoot at you, and yes, mod_jk documentation could be 
much better.

Concerning the docs: Documentation contribution will be welcome. We try 
to add all new things in there, but parts of the documentation are 
indeed rudimentary.

Concerning Apache 2.2: There is no known problem special to Apache 2.2 
with mod_jk. You set it up exactly the same way, as you do with Apache 
2.0. Of course, during build time, you have to use apxs from an 
installed Apache 2.2, so the binary module will be different. But 
features and configuration are exactly the same.


Rainer wrote:
> On Wed, Nov 15, 2006 at 11:25:20PM +0100, Rainer Jung wrote:
>> schrieb:
>>>On Wed, Nov 15, 2006 at 12:22:02AM +0100, Lars Nielsen Lind wrote:
>>>Everything I have read says that mod_jk will not work with 2.2.  What
>>>little information is available says use the proxy modules.
>>There is no known problem concerniong usage of mod_jk in combination
>>with Apache 2.2. Grab mod_jk 1.2.19 and build it against apache 2.2
>>using the same flags as for 2.0. This will work.
> All I can say is that I googled around extensively, trying to learn
> how to set up Tomcat 5.5 with Apache 2.2 as the front end, and found
> many sites saying to stay away from mod_jk, along with mailing list
> messages about the problems people were having with it.  It goes
> without saying, that when you have to depend on mailing list messages
> for documentation of any problem, you have a high likelihood of
> getting it wrong.  Especially when you are under the gun and trying to
> complete a project and not wanting to spend all this time figuring out
> how to do what ought to be quite straightforward.
> The Apache Software Foundation produces some of the best and most
> useful software in the world.  They simultaneously produce some of the
> worst user documentation for that software.  If you want to achieve a
> shortlived feeling of amazement, go to and
> search for the expression mod_jk.  You'll get four hits for
> mod_proxy.  Now search for "mod_jk" (with quotation marks).  You'll
> get two mailing list messages from the httpd mailing list.  I can but
> shake my head.
>>>Then, there are about a zillion ways to proxy and next to NO
>>>documentation on actually using them.  
>>If you want to use mod_proxy, it is important to know, that most
>>documentation for mod_proxy_balancer is contained in apaches
>>documentation page for mod_proxy, not on the page for
>>mod_proxy_balancer :)
> Well, good luck.  I wanted to set up Apache 2.2 with Tomcat 5.5, to
> proxy user directories (/home/user/public_html) with Apache to serve
> static content and Tomcat to serve JSP/servlets.  Nothing.
> Zip. Nada.  I know I'm not the only person that ever wanted to do
> this.  But I could not find documenation anywhere.  Hell, I'd buy the
> book if there was one available.
> It really made me appreciate how well-organized other free software
> projects are, that do provide targeted documentation for their end
> users. 
> Thanks.
> mp

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