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Posted to users@tomcat.apache.org by Jonathan Mast <jh...@gmail.com> on 2008/12/02 17:19:14 UTC

Can I specify virtual hosts in JKMounts?

I'm using Apache+Tomcat (1.3.33, 5.5.17) and I have servlet named "bar",
with no file extension in its name.

bar is in a folder named "foo" which is reachable by 2 virtual hosts:
www.mysite.com/foo/bar
foo.mysite.com/bar

I know to how tell apache that request for  /bar on the WWW virtual host
should be handled by Tomcat:
JkMount        /foo/*    ajp13

Simple enough, but can I also specify foo.mysite.com as well, like this?
JkMount       foo.mysite.com/* ajp13

I searched around and it none of the documentation seems to explicitly say
whether or not virtual hosts can be used in JkMount directives.

Thanks

Re: Can I specify virtual hosts in JKMounts?

Posted by Rainer Jung <ra...@kippdata.de>.

Jonathan Mast schrieb:
> Thanks for the response, I didn't know JkMount directives could be placed
> within VirtualHost declarations.

Older versions of mod_jk tolerated putting JkMount in the global server,
not any vhost. All those mounts were automatically copied to all vhosts.
Since a couple of releases you actually have to put your JkMounts into
the VHosts, or use the JkMountCopy (On|All) construction. See JkMount
and JkMountCopy in

http://tomcat.apache.org/connectors-doc/reference/apache.html

I suggest you make sure to use a recent version (most recent is 1.2.27)
and put your JkMount into the individual VHosts.

> Our httpd.conf uses the following:
> 
> <IfModule mod_jk.c>
>     JkWorkersFile    /usr/local/tomcat/conf/workers.properties
>     JkLogFile    logs/jk.log
>     JkLogLevel    error
>     JkMount        /*.jsp        ajp13
>     JkMount        /servlet/*    ajp13
> </IfModule>
> 
> This is located beneath all our VirtualHost declarations, I presume it must
> be declared before the virtualhost stuff, in order for the JkMount directive
> to be recognized, correct?

I think putting it above is not necessary, but you should in general

- put the JkMount inside the VHosts, or if appropriate use JkMountCopy
- decide whether you want a separate log file per VHost (then add a
JkLogFile with a separate filoe name to each vhost) or only one common
consolidated log file
- consider using rotatelogs for your JkLogFile. It works syntactically
the same way you use it with Apache ErrorLog.

> And won't all the VirtualHost decls have to be within the <IfModule ...>
> tags?

The IfModule tags do not add any functionality except when the module is
not loaded (no LoadModule for mod_jk executed), apache ignore all parts
contained inside the IfModule. It allows you to switch faster between a
configuration using mod_jk and not using it. If you always want to use
it for this Apache, it adds a little unsafety, because if you forget to
load mod_jk, you won't get any error. Without the IfModule Apache will
complain, that it does not know about the Jk directives.

Regards,

Rainer

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Re: Can I specify virtual hosts in JKMounts?

Posted by Jonathan Mast <jh...@gmail.com>.

Thanks for the response, I didn't know JkMount directives could be placed
within VirtualHost declarations.  Our httpd.conf uses the following:

<IfModule mod_jk.c>
    JkWorkersFile    /usr/local/tomcat/conf/workers.properties
    JkLogFile    logs/jk.log
    JkLogLevel    error
    JkMount        /*.jsp        ajp13
    JkMount        /servlet/*    ajp13
</IfModule>

This is located beneath all our VirtualHost declarations, I presume it must
be declared before the virtualhost stuff, in order for the JkMount directive
to be recognized, correct?

And won't all the VirtualHost decls have to be within the <IfModule ...>
tags?

Thanks


On Tue, Dec 2, 2008 at 11:45 AM, André Warnier <aw...@ice-sa.com> wrote:

> Jonathan Mast wrote:
>
>> I'm using Apache+Tomcat (1.3.33, 5.5.17) and I have servlet named "bar",
>> with no file extension in its name.
>>
>> bar is in a folder named "foo" which is reachable by 2 virtual hosts:
>> www.mysite.com/foo/bar
>> foo.mysite.com/bar
>>
>> I know to how tell apache that request for  /bar on the WWW virtual host
>> should be handled by Tomcat:
>> JkMount        /foo/*    ajp13
>>
>> Simple enough, but can I also specify foo.mysite.com as well, like this?
>> JkMount       foo.mysite.com/* ajp13
>>
>>  (Note that above, you are not just re-directing "bar" to Tomcat, you are
> redirecting much more)
>
>
> I'm guessing a number of things here, but you seem to talk about
> VirtualHosts in Apache, apparently something like this :
>
> <VirtualHost *:80>
>  ServerName www.mysite.com
>  ...
> </VirtualHost>
>
> <VirtualHost *:80>
>  ServerName foo.mysite.com
>  ...
> </VirtualHost>
>
> So why not then
>
> <VirtualHost *:80>
>  ServerName www.mysite.com
>  JkMount /foo/bar ajp13
>  JkMount /foo/bar* ajp13
> </VirtualHost>
>
> <VirtualHost *:80>
>  ServerName foo.mysite.com
>  JkMount /bar ajp13
>  JkMount /bar* ajp13
> </VirtualHost>
>
> If it makes it easier, and at least in Apache 2.x, you can also use
> sections like
>
> <Location /foo/bar>
>  SetHandler jakarta-servlet
>  ...
> </Location>
>
> as a kind of alias for your JkMount directives.
> This is a bit harder to find in the documentation, but it appears here :
> http://tomcat.apache.org/connectors-doc/reference/apache.html
> Using SetHandler and Environment Variables
> (at the very end)
>
>
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> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
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>
>

Re: Can I specify virtual hosts in JKMounts?

Posted by André Warnier <aw...@ice-sa.com>.

Jonathan Mast wrote:
> I'm using Apache+Tomcat (1.3.33, 5.5.17) and I have servlet named "bar",
> with no file extension in its name.
> 
> bar is in a folder named "foo" which is reachable by 2 virtual hosts:
> www.mysite.com/foo/bar
> foo.mysite.com/bar
> 
> I know to how tell apache that request for  /bar on the WWW virtual host
> should be handled by Tomcat:
> JkMount        /foo/*    ajp13
> 
> Simple enough, but can I also specify foo.mysite.com as well, like this?
> JkMount       foo.mysite.com/* ajp13
> 
(Note that above, you are not just re-directing "bar" to Tomcat, you are 
redirecting much more)


I'm guessing a number of things here, but you seem to talk about 
VirtualHosts in Apache, apparently something like this :

<VirtualHost *:80>
   ServerName www.mysite.com
   ...
</VirtualHost>

<VirtualHost *:80>
   ServerName foo.mysite.com
   ...
</VirtualHost>

So why not then

<VirtualHost *:80>
   ServerName www.mysite.com
   JkMount /foo/bar ajp13
   JkMount /foo/bar* ajp13
</VirtualHost>

<VirtualHost *:80>
   ServerName foo.mysite.com
   JkMount /bar ajp13
   JkMount /bar* ajp13
</VirtualHost>

If it makes it easier, and at least in Apache 2.x, you can also use 
sections like

<Location /foo/bar>
   SetHandler jakarta-servlet
   ...
</Location>

as a kind of alias for your JkMount directives.
This is a bit harder to find in the documentation, but it appears here :
http://tomcat.apache.org/connectors-doc/reference/apache.html
Using SetHandler and Environment Variables
(at the very end)


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