Using proxy_ajp with Apache2 and Jboss

[Howler9443]

Hello everyone,

I am having a couple of issues. I have setup Apache2 and Jboss. Each works as expected in standalone mode.

For testing purposes I have Apache2 setup on port 150. JBoss is on the default port 8080

I have enabled mod_proxy and proxy_ajp using a2enmod

my 000-default site config is as follows




NameVirtualHost *

<VirtualHost *>
ServerAdmin webmaster@localhost

DocumentRoot /var/www/
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
<Directory /var/www/>
Options Indexes FollowSymLinks MultiViews
AllowOverride None
Order allow,deny
allow from all
# This directive allows us to have apache2's default start page
# in /apache2-default/, but still have / go to the right place
#RedirectMatch ^/$ /apache2-default/
</Directory>

ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>

ErrorLog /var/log/apache2/error.log

# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel warn

CustomLog /var/log/apache2/access.log combined
ServerSignature On

Alias /doc/ "/usr/share/doc/"
<Directory "/usr/share/doc/">
Options Indexes MultiViews FollowSymLinks
AllowOverride None
Order deny,allow
Deny from all
Allow from 127.0.0.0/255.0.0.0 ::1/128
</Directory>

ProxyPass /myapp ajp://localhost:8009/myapp
ProxyPassReverse /myapp ajp://localhost:8009/myapp

</VirtualHost>




When attempting to access 'myapp' I get the following error


Forbidden

You don't have permission to access /myapp on this server.
Apache/2.2.3 (Ubuntu) mod_jk/1.2.18 PHP/5.2.1 Server at yourhost.homelinux.net Port 150



Any suggestions as to what I can do to resolve this?

Thanks.

[Howler9443]

Ok, I resolved this issue.

I was starting Jboss in the following way...

$>./run.sh -c prod --host=192.168.1.100

I was doing this so that I could remotely access the JBoss console from within my home network without setting up the proxy until I was ready. By default JBoss binds to the localhost address as defined in the /etc/hosts file

I stopped JBoss and restarted without the --host parameter and my proxies began to work without issue.

So here is the breakdown of how I use proxy_ajp with JBoss 4.2.0-GA with Ubuntu 7.04


Install proxy_ajp

$> sudo a2enmod proxy_ajp

Modify /etc/apache2/mods-enabled

*WARNING YOU DO THIS AT YOUR OWN RISK...YOU HAVE BEEN WARNED*

Change the line "Deny from all" to "Allow from all"

if you are opening this up to the web and not just an intranet. If you want this on the intranet only provide your host such as "Allow from .myhost.com" (Yes thats a period in front of myhost) This prevents the "Forbidden" error message since this now allows proxies to be used.

Modify /etc/apache2/sites-enabled/000-default (or whatever site you have set up)

Add lines to proxy to your webapp

ProxyPass /mywebapp ajp://localhost:8009/mywebapp
ProxyPassReverse /mywebapp [***]ajp://localhost:8009/mywebapp

Port 8009 is the default AJP port for JBoss if you have configured other instances of JBoss you will have to change the port accordingly.

Restart Apache2 and make sure JBoss is up and running.

$>sudo /etc/init.d/apache2 restart


Hopefully that should do it.

I just wanted to document this procedure for future reference as I know I will just totally forget it! ;-P