jk_mod and binding tomcat 's root to an apache directory 2007-11-04 - By Rainer Jung
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Shug Boabby schrieb:
> Thanks Rainer... I've added the JK debugging and this has helped
> identify a problem... the response that Apache gets (and doesn't forward
> to the client) is that "No host matches server name myserver.com".
Tomcat gets the host name from the forwarded Host header. Are you using
vhosts in Tomcat, or are you using more or less the default config
(which I hope for the first step). In the default config, it should not
be a problem, that there is no Host named myserver.com defined in
server.xml.
There should be a line in the jk debug log similar to:
[debug] init_ws_service::mod_jk.c (806): Service protocol=HTTP/1.1
method=GET host=(null) addr=127.0.0.1 name=localhost port=8001
auth=(null) user=(null) laddr=127.0.0.1 raddr=127.0.0.1
uri=/unrelated/page/on/my/site
Check the uri, that's the one we send to Tomcat. Check the Tomcat logs,
if they show an error. Try to send the same request directly to Tomcat
via its http connector.
> I'm not seeing any output at all in the RewriteLog (btw, it's RewriteLog
> not RewriteLogFile). I'm using Apache 2.2.5.
Sorry. Concerning the empty log file: if you are using virtual hosts,
define the rewrite directives in the vhost. Especially the
"RewriteEngine On" should be in each vhost, that should use mod_rewrite.
Also the Rules are not automatically inherited, and by using individual
RewriteLog directives, you can define vhost private log files and thus
check, which vhost handled your request.
> Apache httpd is running several virtual domains, so this is a reasonable
> response. However, JkMount worked fine despite this so it's a little
> puzzling. I don't have a clue how to fix it! Any ideas?
>
> Should I be concerned that the the JK log is completely full up of lines
> like this
>
> "Attempting to map URI '/unrelated/page/on/my/site' from 2 maps"
>
> every time I get an access request on my server... even though the pages
> have nothing to do with the JkMount points?
No, it's debug (non-production) and also shows us, how mod_jk tries to
decide, if it should forward the request. Those lines are the lines that
show, *if* any of the JkMounts match the URL.
> On 4 Nov 2007, at 15:41, Rainer Jung wrote:
>> Now we go into debugging mod_rewrite and mod_jk.
>>
>> RewriteLogFile logs/rewrite.log
>> RewriteLogLevel 9
>>
>> will give you information, what mod_rewrite does with your URL.
>>
>> JkLogFile logs/mod_jk.log
>> JkLogLevel debug
>>
>> will give us a lot of information, which URL gets passed to mod_jk, and
>> what it does with it.
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