Unable to connect to Tomcat

[reggert]

I'm trying to get Tomcat working on my virtual dedicated Linux server that I have through Godadddy.

In order to get Tomcat to start up at all, I had to modify /etc/tomcat5/tomcat5.conf to change JAVA_HOME to point to /usr/lib/jvm/jre-1.4.2-gcj instead of /usr/lib/jvm/java. After doing this, it seems to start up fine (no errors in the log files, aside from a couple of "WARNING: Unknown default host: localhost" messages.

When I try to upload a WAR file through Plesk, it hangs indefinitely on "Please wait. Loading...".

When I try to access the Tomcat console directly through http://lgi-2.lagardeimperiale.org:8080/ (or :9080; or any other variation of the hostname), it hangs indefinitely with no response.

HOWEVER, when I log into the machine via SSH and run lynx against http://localhost:8080/ or http://lgi-2.lagardeimperiale.org:8080/ (the fully-qualified hostname of the machine; mapped to the machine's IP address in /etc/hosts), I'm able to get into Tomcat (port 9080 doesn't seem to work at all; nor do other variations of the hostname).

Does anyone have any idea what's wrong? It seems as if Tomcat isn't accepting connections from the outside world, or from Plesk.

 

[reggert]

Well, after fighting with it for a bit, I managed to figure out a way to access the Tomcat console.

I set up an extra subdomain and put a JkMount instrunction in its vhost.conf file to direct all requests to the ajp13 worker. Unfortunately, when I tried accessing this subdomain using my browser, I was continually greeted with error 400: "No host matches server name". I fought with it for a bit, and managed to get an error 500 instead. Investigating the mod_jk log revealed that it was unable to connect to port 9008.

I then noticed that my servers.xml had two AJP/13 connectors set up: one that appeared to be reserved for Plesk on port 9008, and another one that appeared to be unused on 8009. I went into /etc/httpd/workers.properties and added a second ajp13 worker to make use of the 8009 one. I updated my vhost.conf to make use of the new worker.

I then hit refresh on my browser and voila! I was greeted with the Tomcat console page.

I believe Plesk's connection to Tomcat is still broken, but once I get a user account set up on Tomcat, its own interface should suffice for my purposes.

 

[reggert]

It somehow broke again while I was trying to debug a ClassDefNotFoundException (as best I can tell, it's a problem with GCJ), so I've given up trying to manage Tomcat through Plesk and just installed Sun's JDK 5.0 and Tomcat 5.5.