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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