When you try to use Apache 2.4 as frontend to glassfish 4.1 via mod_jk, you may encounter an error in a form of Blank page in browser. It may be
due to default listener port setting to 8009. Simply... change this default listener
port.
It is widely advisable to use Apache Front ending with
Glassfish server. One of the reasons is not to expose web container
directly in public hosted websites.
The Apache module mod_jk is used to connect Apache and Glassfish. A wide documentation
is available on internet about it. One may prefer the link... http://goo.gl/5pE3rl
I have experienced a peculiar behavior of Glassfish 4.1
during setup. It had not started with its default port 8080 after fresh
installation.It gave an error which indicates that port 8080 was in used.But the
fact was, none of the application or service was using port 8080 in system.
In order to start the Glassfish 4.1 in server, I changed the port in domain.xml file to 8090 & it started.But problems didn’t stop here. I spent hours to achieve
Apache and Glassfish integration via mod_jk which I have done several times in past years. The connection to Glassfish via mod_jk appeared
to be rejected and browser showed blank page. There was no relevant log entry
in JK Log file as well no activity in Glassfish console window. A clear
indication that connectivity of Apache and Glassfish was not established at all.
First I checked firewall related aspects but there was no such issue.I changed the "docroot" path in Apache virtual host setting to investigate further, but in vain.I tried with different versions of mod_jk. I rebuilt the latest mod_jk too but it also didn't worked. Finally it appeared to me that like
8080, there might be problem in system with default port 8009 too, on which Glassfish
listen for http requests from Apache via mod_jk.
I changed the mentioned port 8009 in “workers.properties” file to 48009 in Apache’s
config folder. I also changed the port in JK listener setting of Glassfish via Admin GUI. And when I
restarted the both the servers and tried to connect... Voila.... It worked in
no time. It showed Glassfish's default welcome page when I simply put server
host name in URI without port number of 8090.
Do inform me... If you faced the same problem and this
solution worked for you too..
Happy " Apache Front
ending with Glassfish "
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