Alessandro Fantuzzi wrote: [...]
If I don' t go wrong the domain admin.site.com is considered to be a "third level domain" related to www.site.com
I believe the following :.com, .biz, etc.. are called "top level domains" or TLD (for obvious reasons). mycompany.com, yourcompany.biz etc.. may be called "second-level domains", which in this case would make "www.yourcompany.biz" AND "admin.yourcompany.biz" be third-level domains.
The fact that "www" is traditionally chosen for website servers, and often for convenience made to resolve to the same IP as "yourcompany.biz", is just a choice. Other than that, the name "www" for a host has no special DNS meaning as compared to "admin".
But that's not the main issue here. To summarise : you have one Tomcat, one Apache httpd, and you want :- that the requests to "http://www.yourcompany.com/"; would go to the Tomcat application deployed under the /site_prod context - that the requests to "http://admin.yourcompany.com/"; would go to the Tomcat application deployed under the /site_admin context
both in the same Tomcat. Check #1:Presumably, you have Tomcat right now configured so that if you request "http://www.company.com:8080/site_prod"; or "http://www.company.com:8080/site_admin";, it calls the corresponding application, right ?
Check #2:I will also suppose that the DNS hostnames "www.company.com" and "admin.company.com" resolve to the same IP address, this being the IP address of the host where Apache and Tomcat are running, right ? (If not, then that is the first thing that you should organise, otherwise the rest will not work).
There are different ways in which you can achieve what you want.The first thing you should now, is that strictly-speaking, to do just the above, you do not need an Apache httpd in front of Tomcat. You could do this with Tomcat alone, and it may simplify your configuration and make your life easier, if you don't need Apache for anything else.
Let us know if you would prefer a Tomcat-only solution.In the meantime, considering that you are naming Apache httpd in your configuration, let's suppose for now that you also need the Apache httpd for some other reason, and let's thus do it with a front-end Apache.
Even there, there are several possibilities.You would want Apache (httpd) to act as a front-end for the Tomcat server, and to "distribute" the calls to the /site_prod and /site_admin applications under Tomcat.
Apache can do that, using either one of the following "proxy modules" : - mod_proxy via HTTP - mod_proxy via AJP - mod_jk via AJP Are you familiar with any of those ? Is one of them already set up on your system ? Do you have a preference ?Next, presumably, you also want that in the process Apache makes the calls appear like you are calling the top-level (or default) application of two different sites, right ?
I mean, you want your clients to call http://www.company.com and not http://www.company.com/site_prod Yes ? So basically, what we want to achieve is : browser : http://www.mycompany.com http://admin.mycompany.com 1) goes to : apache httpd host same apache httpd host 2) changed to: localhost:xxxx/site_prod localhost:xxxx/site_admin (where xxxx is the listening port of Tomcat on the same host) 3) sent to Tomcat (using mod_proxy_http, mod_proxy_ajp, or mod_jk) 4) calls Tomcat app /site_prod /site_admin and back For (1), the DNS part must be working.You will probably also need to understand Virtual Hosts, so you might as well read this too :
http://httpd.apache.org/docs/2.2/vhosts/ (read the section about Name-based Virtual Hosts) For (2), you will need some rewriting of the URL. Read this : http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html For (3), we will need an Apache/Tomcat Connector. If one is already installed and working, it will be a lot easier. Is there ?Otherwise, I suggest mod_jk, but that is only a personal preference, because I know it better than the others.
For (4), these apps need to be installed and working in Tomcat. Are they ? How do you call them, right now ?
Here are the info about production environment. LINUX APACHE 2.0.59 TOMCAT 5.5.20 JVM 1.5I read the documentation for both Apache httpd and Tomcat, and I also had some testing on my testing environment, which is somewhat different.Windows XP Professional APACHE 2.0.63 Tomcat 6.0.14 JVM 1.5 This is what we want to obtain:when the user calls http://www.site.com the contents must be served by the application intalled in /site_prod under Tomcat. When the user calls a particular third level domain, say http://admin.site.com the contents must be served by the application installed in /site_adminThis is how I configured Apache httpd and Tomcat:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::httpd.conf: here I created two VirtualHosts <VirtualHost *:80> ServerName admin.site.com DocumentRoot "webapps/site_admin" JkMount /site_admin/*.jsp worker1 JkMount /* worker1 RewriteEngine on [...](Some rewrite rules) [...](Log files) </VirtualHost> <VirtualHost *:80> ServerName site.com DocumentRoot "webapps/site_prod" JkMount /site_prod/*.jsp worker1 JkMount /* worker1 [...](Some rewrite rules) [...](Log files) </VirtualHost>:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::In server.xml I created two Hosts<Host appBase="webapps\" autoDeploy="true" debug="0" name="admin.site.com" unpackWARs="true"><Context debug="1" docBase="web\" path=""/><Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="common" prrefix="home_access_log."resolveHosts="false" suffix=".txt"/> </Host><Host appBase="webapps\" autoDeploy="true" debug="0" name="www.site.com" unpackWARs="true"><Context debug="1" docBase="web\" path=""/><Valve className="org.apache.catalina.valves.AccessLogValve" directory="logs" pattern="common" prrefix="home_access_log."resolveHosts="false" suffix=".txt"/> </Host>:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::What is strange is that when both applications are up and running everithing seem to go the right way. I mean, when I call www.site.com I get a response from the application sitting on /site_prod And when I call admin.site.com I get a response from the application sitting on /site_admin But if I turn off the application installed in /site_admin , instead of receving an error message, I get a page from the application in /site_prodI don' t know if this is a correct behaviour or if my configuration is messed up.
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