I’m using glassfish 3.1.2 on Red Hat Enterprise Linux Server release 5.7 (Tikanga). Glassfish has been installed as part of a piece of bigger software (that I’m developing). It used to work correctly in the past.
I can issue a ‘start-domain’ command. This one will work correctly and glassfish will start. I can see the process and the glassfish admin web console is working fine. However, the command ‘list-domain’ reports my domain as not running. The command ‘stop-domain’ will fail reporting the domain1 as already stopped. This prevents my software to run properly.
As far as I know, nothing has changed on that system. There is no exception/error in the log. I already search the internet for description of similar behaviour. I ensured the embedded firewall (the one coming with the OS) did not prevent the communication. I removed the expired certificate (just in case). I have no idea on what I could do next.
What could I check? Any help appreciated. Add a comment if you need specific details and I will update the question.
Answer to unwichtich's questions:
absolute path to jvm using an absolute path to the admin-cli.jar: /.../java -Duser.home=... -Duser.language=en -Dhttps.protocols=TLSv1.2 -jar /.../glassfish/modules/admin-cli.jar --terse --port 23992 --user admin --passwordfile /.../passwordfile list-domains
There are two lines in the /etc/hosts. The first with the ip mapping to the hostname. The second with 127.0.0.1 mapping to loopback and localhost
My software includes some command line utilities that need to perform operation on Glassfish (like start-domain, stop-domain, list-domains,...).
I am trying to debug my dynamic web application in Eclipse (Helios) as Debug mode but it could not work out. I have googled eventually i confirmed that i have to do Remote Debug. I trying to do Remote Debug. It seems doesn't work. Could please any one help me out to how to do set up Remote Debug and please mention steps to setup.
What app. server (web container) are you using ? I.e. tomcat , Add that server to your eclipse using "add server" and add project to it then run server in debug mode.
Sometimes its an issue with port.The port which you are trying to access is already occupied and wouldn't be released and you get this exception.Try restarting your system,in my case it worked.See the below post for more troubleshooting.
See Also
Eclipse : Failed to connect to remote VM. Connection refused.
I am using Eclipse 3.5 along with JDK 1.6.0_23 (both on Laptop and desktop) within my organisation. The proxy server uses Windows domain authentication to pass through request.
While adding update sites within Eclipse available on Laptop, I could see that Eclipse is able to connect the site and doesn't throw authorisation exception. I have set the Active Provider in Network Connections as Native. I haven't configured my credentials in eclipse anywhere and it communicates with Proxy server smoothly.
I have similar settings on my desktop machine, but it throws Proxy Authorization exception. There is no clue in Error log. But it does displays a information indicating
System property http.proxyHost is not set but should be XXX.XXX.XXX.XXX.
Similar messages do appear for http.proxyPort and https as well. I don't want to explicitly enter my credentials in Eclipse and hence looking for clues as why similar settings are behaving differently in these environments.
I had the same problem with eclipse luna. I tried this link
( http://javarevisited.blogspot.com/2014/01/eclipse-not-able-to-connect-internet-market-place-configure-proxy-settings.html ) and it helped me resolve the problem!
I've inherited a project which i'd like to test in JBoss - the problem is I cant get it to start within Eclipse. It works outside of Eclipse but I have to do a maven build, deploy the WAR files to JBoss and restart JBoss each time I make a change which is a nightmare.
In Eclipse I have added a JBoss 6 server, started it which appears to be fine (i.e. no errors in the console), then I try to run the 2 applications (one server then one client) - however nothing gets printed to the console log - no error or anything. It says started pretty much straight away. Just get a 404 error when going to the localhost:8080/name address.
I understand this may be difficult for someone to assist me here as there is no error message but if anyone has any suggestions or advice it would be much appreciated. I would have thought this should be simple but dont know what im doing wrong...
Eclipse may be running the JBoss server so it listens to a different port. Either that or the 8080 port is already bound so Eclipse can't open it.
Try configuring the JBoss project in Eclipse so it listens at a different port.
[Edit]
Here is a thread on jboss.org that discusses changing the port used by JBoss when running in Eclipse.
I wrote a Java servlet filter on my local machine and deployed it a remote (machine) web server. Unfortunately, it's been very difficult and time-consuming trying to trace errors reported by Apache Tomcat 5.5, my JSP/servlet engine. I can't keep writing System.out.println(...), saving, deploying, testing JSP pages, and so on. It's taking too long. There has to be a better, faster way.
Is it possible to remotely debug servlet filters? I don't have a web server on my local machine, which is why I'm asking about remote debugging. Specifically, I'm looking for a way to debug, line-by-line, the servlet filter, on-the-fly, as it's happening on the remote web server. Does such a method exist?
Or, is there a better method than writing to standard output. It's taking too long and I feel that must be a more efficient means of debugging Java servlet filters.
Note: I'm using Eclipse for development.
Thank you very much for any help.
Update
Thank you all for your help. I really appreciate it.
I added the JVM argument to Tomcat, restarted Tomcat. Then, on the machine with Eclipse, I entered in the appropriate info in the Debug config, put the breakpoint in, and tested. Unfortunately, it did not work. In the config, I left it as Socket Attach, clicked apply, and that was it. I pressed the debug button and it said the connection was refused. I tried ports 8000 and 8001 and both did not work.
Let me explain what I'm trying to do, that might be better.
I have a login page called login.jsp. On that page, is a form whose action attribute is servlet/LoginServlet. When the user submits the form, it calls servlet/LoginServlet, which is mapped to a class in the web.xml file. Let's call this class com.mysite.mypkg.classA. In class A, it calls a method from another class called com.custom.mypkg.classB. I want to put a breakpoint in classB.
So, using the url with login.jsp page in the Eclipse debugger won't call it. I tried using servlet/LoginServlet and that also did not work.
What should I put in for the URL? Or, do I debug this type of setup?
Thank you.
Update 2
I found this site here, which is pretty comprehensive. I ran netstat -a and noticed that the debug port is not listed. Windows Firewall is turned off, but there could be another thing blocking the port, who knows. Anyway, I placed the VM argument here and it's not working.
Thank you.
For remote debugging you need to start the server in debug mode. There are couple of ways doing that.
1 > start the server using
catinlina.bat jpda start
2 > Add an jvm argument to the tomcat java process
-Xdebug -Xrunjdwp:transport=dt_socket,address=8000,server=y,suspend=n
Once the server is started in debug mode , you need to change the perspective of the project in eclipse to debug.
Then go to Run - > Debug configuration.
Double click remote java application and enter the details such as
Remote IP address
Debug port . Default tomcat debug port is 8000. If you use jvm argument, use the port mentioned in the jvm argument.
Click Apply
Go to the java file you want to debug.
Put a break point in the source code and run the scenario you want to test (Eg Web application using browser)
Also , ensure that the code in the java file is in sync with code deployed on remote server.
Happy Debugging!!!
Peace.
Sanket Raut
You can attach a debugger to a running Tomcat instance, provided that you gave it the right command line options when you launched it.
The Tomcat Development Wiki explains how to do this, and as a bonus gives you instructions on how to set up to debug from the Eclipse or NetBeans IDEs.
Of course, attaching a debugger to a running Tomcat has both security and performance implications*.
* And OH&S issues - you might get badly scratched if you tried this on the wrong kind of tomcat ...
You should run your remote tomcat with the following starup parameter:
bin/catalina.bat jpda start
Then in Eclipse on your local machine go to Run -> Debug Configurations -> Remote Java Application, create new configuration here, use IP of the remote machine as a host and 8000 as a port there
Run this configuration and use the breakpoints in Eclipse for debugging