Jeff Beard wrote:
On Mon, Dec 10, 2012 at 2:22 PM, Dhruva Reddy <bdhr...@gmail.com> wrote:
Hello,
I have a question about running Tomcat behind Apache HTTP server. I hope
this is not inappropriate for this list.
I am running a website on Tomcat 7.0.33, behind Apache 2.2.15, on CentOS
6.3 (using Tomcat connector 1.2.37). I would like the user to go to our
base URL (http://www.example.com), but have the request served by a web
application running on Tomcat (I have the connector working, so that you
can access the application through http://www.example.com/application/).
I thought this could be accomplished through a rewrite rule on the HTTP
server, but I can't seem to get it to work, nor can I find much information
on it. I can't really find any best practices around this, either. Has
anyone done this successfully?
I have tried many things, but this is what I currently have in httpd.conf:
<Directory "/var/www/html">
Options Indexes FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
RewriteEngine On
<IfModule mod_rewrite>
RewriteBase /
RewriteRule ^/ application/ [NC]
RewriteLog "/etc/httpd/logs/rewrite.log"
RewriteLogLevel 9
</IfModule>
</Directory>
I did confirm that the rewrite module is loaded. Any insights would be
greatly appreciated.
Thanks,
Dhruva
Dhruva,
Based on the snippet of configuration you've provided it isn't clear that
you've configured the Tomcat Connector. Perhaps there's more that you
haven't shown us? Anyway, most recently I've configured Apache much like
this document describes:
http://tomcat.apache.org/connectors-doc/generic_howto/quick.html
I have another couple of questions :
1) considering that you want that "^/" (the top of your Apache httpd's URL space) be
forwarded to Tomcat, do you have anything that would /not/ be forwarded to Tomcat ?
If yes, where would that part live (in which directory/URL space of your httpd
server) ?
If no, why do you even need the front-end Apache httpd ?
2) have you considered making your Tomcat application "/application" be the "/ROOT"
default webapp of Tomcat ? Then it would be mapped to the path "/" in Tomcat also, and no
rewriting would be required.
But, assuming for now that you need a front-end httpd and that you want to forward
everything to "/application" in Tomcat, do this instead :
RewriteEngine On
RewriteLog "/etc/httpd/logs/rewrite.log"
RewriteLogLevel 9
<Location />
Order allow,deny
Allow from all
RewriteRule (.*) /application/$1 [NC]
SetHandler jakarta-servlet <-- this is what forwards to Tomcat
</Location>
Explaining all the changes in detail would be a lot here, but here's a few
notes :
1) SetHandler jakarta-servlet : replaces "JkMount" instructions, with similar effect. It
tells Apache that for this, you want mod_jk (the Apache-Tomcat connector) to generate the
response, which it does by forwarding the request to tomcat, and collecting tomcat's response.
2) removal of <IfModule> directives : you don't want them here, I guess. If mod_rewrite is
not there, none of your Rewrite directives will be understood, and your Apache won't
start. That is probably what you really want; you don't just want Apache to do something
else then.
3) you can move the 3 first Rewrite* directives back into the <Location> section if you
want. But where they are, they will be inherited by it anyway.
4) I think (I am not 100% sure) that using a <Directory> section for this is already "a
bit late" in the Apache cycle. By the time Apache looks inside a <Directory> section, it
has already parsed the URL, and mapped it to a disk directory. In this case, you don't
want a disk directory (you may not even have one there). You want to catch this earlier,
as soon as Apache is just looking at the URL. That's what <Location> sections are about.
5) Inside a <Directory> or <Location> section, the first element to the Rewrite rule is
matched against what remains of the URL path, after stripping the portion which made this
Directive being interpreted inside that section. So in
<Location />
RewriteRule (.*) /application/$1 [NC]
the "(.*)" matches everything after "/", and is captured in $1.
Then you re-inject that same $1 value in the rewritten path /application/$1.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org
For additional commands, e-mail: users-h...@tomcat.apache.org
