I am okay with proxing through Apache as long as I can
measure the time through Tomcat down to millisecond or
better yet microsecond resolution.
For the last several years I have been working on new
type of Educational system using the latest
technologies and since I am working on creating a new
startup I want to be able keep costs low for licenses
for the customers and keep the hardware requirments
low.
Using the 5.x version of Tomcat in JBoss I got down to
subnanosecond in my measurments at the servlet level
yet getting the rest of the way out of Tomcat/Apache
took over 1o milliseconds. Doing some hardware
upgrades that I could afford and upgrading the jvm
some adjustments of Tomcat and the jvm I got down to
the 4millisecond range.
Does that help answer the question?
Regards,
Tony Anecito
Founder, MyUniPortal
--- Dan_Mitton@xxxxxxxxxxxxx wrote:
> Tony,
>
> Aaah. That is what I feared. You would need to get
> a second static IP
> address from your ISP to make any of this work.
>
> If you are stuck with one static IP address from
> your ISP, I think your
> only solution is the mod_jk that you are already
> doing. Why is proxying
> the tomcat requests through apache a problem?
>
>
>
> Please respond to users@xxxxxxxxxxxxxxxx
>
> To: users@xxxxxxxxxxxxxxxx
> cc: (bcc: Dan Mitton/YD/RWDOE)
> Subject: Re: Tomcat and Apache
> on the same port?
> LSN: Not Relevant
> User Filed as: Not a Record
>
> Hi Dan,
>
> This is a home/isp lan. I am using 2.2.4 of Apache
> and
> JBoss 4.2.1GA on windows 2000 sp4 with jre 1.6.0_02.
>
> Regards,
> -Tony Founder,
> MyUniPortal
>
> --- Dan_Mitton@xxxxxxxxxxxxx wrote:
>
> > Tony,
> >
> > Yes. One physical server and/or network card can
> > support multiple IP
> > addresses. What OS is this? When you say LAN, is
> > this a corporate LAN or
> > a home/isp LAN? Which versions of apache and
> > tomcat? proxy_ajp and
> > mod_jk are the same thing, only proxy_ajp is for
> > apache 2.2+ and mod_jk
> > pre-2.2.
> >
> > Ok, before we can do anything, you'll need a
> second
> > static IP address for
> > your server. Then, it needs to get configured on
> > your server. I'm more
> > of a Unix guy, but maybe someone else out here
> could
> > help out if your
> > running windows.
> >
> > After that...
> >
> > In apache, you likely have a:
> >
> > Listen 80
> >
> > somewhere. You can change that to:
> >
> > Listen <ip-address1>:80
> >
> > without the '<', '>', so that apache will only
> list
> > on that
> > ip-address/port combination.
> >
> > Likewise, in tomcat, you likely have something
> like:
> >
> > <Connector port="80" ...
> >
> > you can add an address parameter to specify an ip
> > address, like:
> >
> > <Connector port="80" address="<ip-address2>" ...
> >
> > Have you ever used the 'netstat' command? On
> > windows, something like:
> >
> > netstat -nap tcp
> >
> > will output something like:
> >
> > Active Connections
> >
> > Proto Local Address Foreign Address
> > State
> > .
> > .
> > .
> > TCP 0.0.0.0:80 0.0.0.0:0
> > LISTENING
> > .
> > .
> > .
> >
> > or on Unix (at least Sun Solaris 10) something
> like:
> >
> > netstat -naf inet
> >
> > On Unix, you might see '*', instead of 0.0.0.0,
> but
> > they both mean the
> > same thing, all address on the server. If you run
> > netstat before make the
> > above apache/tomcat changes, you would see:
> >
> > TCP 0.0.0.0:80 0.0.0.0:0
> > LISTENING
> >
> > after the changes, it should look like:
> >
> > TCP <ip-address1>:80 0.0.0.0:0
> > LISTENING
> > TCP <ip-address2>:80 0.0.0.0:0
> > LISTENING
> >
> >
> >
> >
> > Please respond to users@xxxxxxxxxxxxxxxx
> >
> > To: users@xxxxxxxxxxxxxxxx
> > cc: (bcc: Dan Mitton/YD/RWDOE)
> > Subject: Re: Tomcat and
> Apache
> > on the same port?
> > LSN: Not Relevant
> > User Filed as: Not a Record
> >
> > Hi Dan,
> >
> > Thanks for the response. So I can have different
> > IP's
> > for the same physical server how would the client
> > and
> > the router handle that? I have a static address
> for
> > my
> > server on the lan and I redirect my request for
> port
> > 80 to that IP. What decides the IP to send a
> request
> > to the web server versus the Tomcat servlet
> > container?
> >
> > Sounds good but I am trying to sort through the
> > details for that configuration.
> >
> > Also, I am already sending requests to Tomcat via
> > mod_jk in Apache so not sure what the advantages
> are
> > of proxy_ajp.
> >
> > Many Thanks,
> > -Tony
> >
> > --- Dan_Mitton@xxxxxxxxxxxxx wrote:
> >
> > > Tony,
> > >
> > > The only way to have two services use/listen on
> > the
> > > same port is to use
> > > two different IP addresses, one for each. Then
> > each
> > > can listen on port
> > > 80.
> > >
> > > A possible, very high effort, alternative would
> be
> > > to write a program that
> > > would sit in front of both apache and tomcat,
> that
> > > could examine the
> > > incoming packets and determine to route it to
> > apache
> > > or tomcat based on
> > > the packet content. I'm talking a very
> > complicated
> > > program here.
> > >
> > > Apache proxying requests through to tomcat is
> not
> > > that expensive overhead
> > > wise. That would really be your best solution.
> > > Look at the proxy_ajp
> > > module in apache 2.2
> > >
> > > Dan
> > >
> > >
> > >
> > > Please respond to users@xxxxxxxxxxxxxxxx
> > >
> > > To: Tomcat Users Group
> > <users@xxxxxxxxxxxxxxxxx>
> > > cc: Apache Mailing List
> > <users@xxxxxxxxxxxxxxxx>
> > > (bcc: Dan
> > > Mitton/YD/RWDOE)
> > > Subject: Tomcat and Apache
> on
> > > the same port?
> > > LSN: Not Relevant
> > > User Filed as: Not a Record
> > >
> > > Hi All,
> > >
> > > Is it possible to run Tomcat and Apache on the
> > same
> > > port? What I want to do is have my website
> running
> > > on
> > > Apache web server or port 80 and also have
> Tomcat
> > > running on port 80. That way my web service
> > requests
> > > do not need to go through Apache web server
> where
> > > they
> > > are redirected to Tomcat.
> > > I am trying to avoid web service requests going
> to
> > a
> > > different port on the client side and getting
> > > stopped
> > > by a proxy but perhaps that does not stop http
> > > requests going another site on port say 81?
> > >
> > > Thanks,
> > > -Tony
> > >
> > >
> > >
> > >
> >
>
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