Re: [enhydra] how to download and install enhydra_conductor

[Slobodan Vujasinovic <slobodan@xxxxxxxxxxxxx>]

Hi Christoph,

Enhydra Conductor is basically, nothing else, then mod_jk2!
Since 15th November 2004 JK has been put in maintainer mode and all 
further development has been stooped. Therefore, we had no reason to 
release newer Enhydra Conductor releases.
To conclude, you can use your enhydra conductor installation with new 
enhydra-6.5-1 (it is supported by enhydra 6.5-1 just like by enhydra 
6.0-1 - no changes were required in mean time).

We are planing to migrate Enhydra Conductor to JK (tomcat connector) now 
(lots of initial code from JK2 is ported to JK). It will, probably, be 
done in next Enhydra release.
More information about JK project can be found on 
'http://jakarta.apache.org/tomcat/connectors-doc' project documentation 
home page.

I've installed it (JK 1.2.14) into new Apache HTTP Server (version 
2.0.54) and managed to connect to Enhydra 6.5-1 trough it (on Windows 
though)  :)

you wrote:
------------------------------------------------------------------------

...
i do not know exactly what version of tomcat is in the
runtime and the conductor. do they (have to) match?

-------------------------------------------------------------------------

Enhydra 6.5-1 is based on Tomcat 5.5.9 (runtime version also).
Enhydra Conductor has no direct Tomcat version dependencies!

you wrote:
------------------------------------------------------------------------

...
probably just forget it all and use mod_proxy instead, 
like phoebe is (probably correctly) suggesting?

-------------------------------------------------------------------------

I'm suggesting you to try out  mod_jk (JK) release first!
NOTE: any testing  feedback from you would be appreciated (specially 
before our Enhydra Conductor migration to JK).

Regards,
 Slobodan Vujasinovic
Enhydra Development Team



christoph moar wrote:

> Hello Phoebe,
> thanks for your input, it is very valuable to me. In the meantime
> i did manage to download: "enhydra-conductor-6.0-1.src.rpm"
> and compile it on my platform (centos 4.1, alias redhat enterprise
> x86_64 bit platform).
> i had to make some changes in the SPEC file, i attach the patch
> if anyone is interested.
>
> you write:
>
>  
>
> > rest. During testing, I notice the load balancing did work,
> > but with heavy testing, the apache crashed with an error
> > msg. I googled the message and found out it is a known
> > problem. I also email other developers to verify they had
> > the same problem. Then, I gave up the idea of using
> > mod_jk2. 
> >    
>
> this is serious info for me. can you tell me what error shows
> up or the google links so i will monitor during our test phase 
> and see if the same thing happens to me too? that would be
> really helpful!
>
>  
>
> > I am now using mod_proxy and mod_rewrite to do
> > simple load balancing (it is not pretty), but it works. 
> >    
>
> yeah, i know. from what you say, i'll probably switch to
> that also. since i already installed the conductor, i might
> as well test it for a few days.
>
>  
>
> > Now, apache comes out with a new version, guess what, they
> > no longer support mod_jk2. Therefore, I think it would not
> > be a good idea to use mod_jk2. 
> >    
>
> oh. didn't know that. what a mess, if you ask me. there's 
> something like 5 different ways to connect tomcat to apache
> and no stable one in sight? sigh! i heard also that they will
> probably add a tomcat connector to mod_proxy, so maybe you
> are right and that is the right way to do it? just don't
> know.
>
> what i would like to know from the enhydra developers:
>
> know i have installed (on the production machine):
>
> enhydra-runtime-6.5-1
> enhydra-conductor-6.0-1
>
> i do not know exactly what version of tomcat is in the
> runtime and the conductor. do they (have to) match? should
> i download the conductor tar.gz from the apache site
> (which version?) instead? or should i probably just forget 
> it all and use mod_proxy instead, like phoebe is 
> (probably correctly) suggesting?
>
> any hints?
>
> and another thing: when i start apache i get:
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28796 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28797 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28799 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28800 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28801 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28802 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [error] jk2_init() Can't find child 28803 in
> scoreboard
> [Wed Oct 12 18:02:04 2005] [error] mod_jk child init 1 -2
> [Wed Oct 12 18:02:04 2005] [notice] Apache configured -- resuming normal
> operations
>
> i am still googl'in on this, but maybe anyone knows what it means?
> the whole system seems to work fine, tough.
>
> regards
> christoph
>
> --
> http://www.alpin.it         software, consulting & strategy
>
> Christoph Moar                          Dipl. Inform. Univ.
> alpin gmbh srl          management & technology consultants
> tel +39 0471 056007 fax +39 0471 056005 gsm +39 348 3057012
> lanciastr. 8b  via lancia 8b    bozen 39100 bolzano   italy
> http://www.alpin.it                 christoph.moar@xxxxxxxx
>
>
>  
>
> > -----Original Message-----
> > From: Phoebe Whitefield [mailto:pwhitefield@xxxxxxxxxxxx] 
> > Sent: Wednesday, October 12, 2005 5:23 PM
> > To: enhydra@xxxxxxxxxxxxx
> > Subject: Re: [enhydra] how to download and install enhydra_conductor
> >
> > On Wed, 12 Oct 2005 10:24:56 +0200
> > "christoph moar" <christoph.moar@xxxxxxxx> wrote:
> >    
> >
> > > Hi,
> > > i want to setup apache with tomcat/enhydra and have read
> > > all the available
> > > documentation. i had other projects where i used
> > > mod_proxy alone or the
> > > old enhydra director.
> > > i read the documentation and i think what it says is that
> > > the new mod_jk2
> > > should be the state of the art to use. i tried reading
> > > mod_webapp to see
> > > if any of the other variants should be followed, but it
> > > all sums up to me
> > > that
> > > all can connect tomcat to apache and maybe mod_jk2 should
> > > be the one
> > > to use. well, i'd say i'll try it.
> > >
> > > the question is:
> > > - on the production server i have installed
> > > enhydra-6.5-runtime
> > >
> > > how to i install the enhydra conductor now?
> > > - should i download the tomcat sources and get mod_jk2
> > > compiled?
> > > - or should i download a rpm/tgz from enhydra
> > > sourceforge?
> > >
> > > i tried looking on the sourceforge page but could not
> > > really find any link
> > > there
> > > to conductor. the only thing i found by googling was a
> > > link to 
> > >
> > >
> > >      
> > https://forge.objectweb.org/project/download.php?group_id=21
> >    
> >
> > <https://forge.objectweb.org/project/download.php?group_id=21&;
> > file_id=2687>
> >    
> >
> > > &file_id=2687
> > >
> > > which states this is conductor 6.0-1
> > >
> > > is this what i should be using?
> > >
> > > thanks and best regards for your response
> > > christoph moar
> > >
> > >
> > > --
> > > http://www.alpin.it <http://www.alpin.it/>
> > >         software, consulting &
> > > strategy
> > >
> > > Christoph Moar                          Dipl. Inform.
> > > Univ.
> > > alpin gmbh srl          management & technology
> > > consultants
> > > tel +39 0471 056007 fax +39 0471 056005 gsm +39 348
> > > 3057012
> > > lanciastr. 8b  via lancia 8b    bozen 39100 bolzano
> > >  italy
> > > http://www.alpin.it <http://www.alpin.it/>
> > > christoph.moar@xxxxxxxx
> > >
> > >
> > >      
> > Hi,
> >
> > I had Enhydra 6.4.1 installed on my development machine and
> > the production machine. In the production environment, we
> > use apache as our web server. I also had to configure
> > apache to talk to tomcat and do the load balancing. I
> > downloaded mod_jk2, had the workers.properties and the
> > rest. During testing, I notice the load balancing did work,
> > but with heavy testing, the apache crashed with an error
> > msg. I googled the message and found out it is a known
> > problem. I also email other developers to verify they had
> > the same problem. Then, I gave up the idea of using
> > mod_jk2. I am now using mod_proxy and mod_rewrite to do
> > simple load balancing (it is not pretty), but it works. 
> >
> > Now, apache comes out with a new version, guess what, they
> > no longer support mod_jk2. Therefore, I think it would not
> > be a good idea to use mod_jk2. 
> >
> > Hope this help. If you really would like to try out the
> > mod_jk2. I can send you my configuration files and how I
> > did my setup.
> >
> > Phoebe
> >
> >
> >    
> >
> > ------------------------------------------------------------------------
> >
> >
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