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From "Fenlason, Josh" <jfenla...@ptc.com>
Subject RE: Which direction: mod_jk or mod_proxy_ajp? (was: why use mod_jk?)
Date Fri, 24 Feb 2006 15:07:18 GMT
That depends if you want to use Apache 2.0.x, Apache 2.2.x, or some
other web server (i.e. IIS).  If you're planning on using Apache 2.2.x,
mod_proxy_ajp is the way to go.  For anything else, mod_jk is the way to
go.
,
Josh.

> -----Original Message-----
> From: Brad O'Hearne [mailto:brado@neurofire.com] 
> Sent: Friday, February 24, 2006 9:02 AM
> To: Tomcat Users List
> Subject: Which direction: mod_jk or mod_proxy_ajp? (was: why 
> use mod_jk?)
> 
> 
> I suppose this question deserved its own thread. Before I spend any  
> more time trying to get this configured, I would like to know 
> what is  
> the best way to proceed: mod_jk or mod_proxy_ajp?
> 
> Thanks,
> 
> Brad
> 
> On Feb 24, 2006, at 7:49 AM, Brad O'Hearne wrote:
> 
> > Jess,
> >
> > Thanks for the reply. Responses below:
> >
> > On Feb 24, 2006, at 6:51 AM, Jess Holle wrote:
> >
> >> If you're using Apache 1.3.x or 2.0.x, mod_jk is pretty simple
> >> overall.
> >>
> >> No, you don't want to even try in-process stuff and, yes, if you
> >> have a firewall in between Apache and Tomcat that drops idle  
> >> connections you should read carefully (this is covered by 
> the docs).
> >>
> >> The only big complaint I have is that the mod_jk docs don't make
> >> it terribly clear (or didn't last I checked) exactly how to set  
> >> jvmRoute in Tomcat and how extraordinarily critical this is when  
> >> doing load balancing.  The Tomcat docs don't make this terribly  
> >> clear either -- apart from a comment in server.xml.  Most 
> everyone  
> >> I know who tries mod_jk load balancing gets hung up on this one  
> >> point unless/until I give them a detailed explanation.  
> Apart from  
> >> the lack of clear/obvious information on this in the mod_jk docs  
> >> (which should include it considering most folk won't think to  
> >> check both mod_jk and Tomcat docs), this is actually very simple  
> >> as well, though.
> >>
> >
> > None of the configuration steps in and of itself are difficult.  
> > Building mod_jk is not difficult. Editing configuration files is  
> > not difficult. Its after you've put it all together, exactly as  
> > noted on a hodge-podge of Googled URLs, and it doesn't work, and  
> > one cryptic line in a log file, and the right connections 
> not being  
> > made between apache and tomcat, which send you into hours of trial  
> > and error. With regards to your comments above, I didn't tangle  
> > with load balancing at all, and apache and tomcat reside on the  
> > same box, no firewall between them. Yes, you'd think this would be  
> > simple.
> >
> >> I am looking forward to mod_proxy_ajp as it is supposed be a tiny  
> >> bit faster.
> >
> > You say you are "looking forward to mod_proxy_ajp" -- does this  
> > mean its not available yet, or you just aren't using it yet? While  
> > I am glad to learn now of mod_proxy_ajp, I guess this kind of adds  
> > to my frustration a bit -- what is the way to go now and why:  
> > mod_proxy_ajp or mod_jk?
> >
> > Thanks for your help.
> >
> > Brad
> >
> >>
> >> --
> >> Jess Holle
> >>
> >> Brad O'Hearne wrote:
> >>> mod_proxy_ajp? Yet another twist. Its just hard for me to 
> believe  
> >>> that "how do I integrate tomcat and apache httpd?" is such a  
> >>> mystery / unknown. This seems like it would be question 
> #1 on any  
> >>> Tomcat FAQ.
> >>>
> >>> So where can I found out more about mod_proxy_ajp. Is there a  
> >>> Tomcat resource which explains the configuration of it?
> >>>
> >>> Brad
> >>>
> >>>
> >>> Bill Barker wrote:
> >>>
> >>>> "Brad O'Hearne" <brado@neurofire.com> wrote in message news: 
> >>>> 43FEBA07.3020707@neurofire.com...
> >>>>
> >>>>> After wasting time trying to configure mod_jk, I thought I'd  
> >>>>> just wipe my mind free and just play dumb for a moment. If  
> >>>>> Apache can proxy requests using mod_proxy, what is the benefit 

> >>>>> of using mod_jk as an integration technique between httpd and  
> >>>>> tomcat, if integration is *not* in-process, which I understand 

> >>>>> is not recommended for Tomcat 5.5?
> >>>>>
> >>>>>
> >>>>
> >>>> Actually, in-process with mod_jk is only supported (and, I use  
> >>>> the term lightly :) for TC 3.3.x.  For any higher versions it  
> >>>> doesn't work at all.
> >>>>
> >>>> You've managed to grasp the deep, dark plan of the Tomcat  
> >>>> developers:  It is expected that people will migrate to  
> >>>> mod_proxy_ajp with Httpd 2.2+, and mod_jk is expected to 
> move to  
> >>>> supporting IIS/SunOne only (and, the later only if somebody  
> >>>> steps up with interest :).
> >>>>
> >>>>
> >>>>> Brad
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> 
> ------------------------------------------------------------------- 
> >>>> --
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> >>>>
> >>>>
> >>>
> >>>
> >>> 
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> >>>
> >>
> >> 
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> >
> > 
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> 
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