SAP Cloud Foundry中的远程调试

Question

I am wondering how to remote debug a S4SDK/Spring 2.0.6 Java Application deployed in SAP Cloud Foundry.

I am using Eclipse (Spring Tool Suite) and started the app in Debug Mode. The application will be restarted with the following environment variable: -Dspring.devtools.remote.secret=secret -Xdebug -Xrunjdwp:server=y,transport=dt_socket,suspend=n,address=47822

The console output shows, that after startup an SSH tunnel has automatically been created successfully (as a prerequisite I have enabled SSH using cf enable-ssh). and 'Successful remote access by 10.0.136.5:34858'.

After a few seconds, eclipse shows the message "Failed to connect to remote VM".

How to enable remote debugging?

Answer 1

This depends a bit on the buildpack you are using (see this link ).

For the sap_java_buildpack you need to do the following:

1. Run the jvmmon in your CF container:

    cf ssh <app name> -c "app/META-INF/.sap_java_buildpack/sapjvm/bin/jvmmon" 

2. In the opened CLI enter start debugging .

3. (Optional) Enter print debugging information to verify that debugging is enabled.

4. Exit the CLI with q .

5. To open the ssh tunnel enter cf ssh <app name> -N -T -L 8000:127.0.0.1:8000 .

6. With that you can connect to your application via localhost:8000 by the usual means of your IDE.

As I have no experience with remote debugging in Eclipse I cannot help you with that part, in IDEA there is a special "Remote" Configuration where you can add the remote URL, so localhost:8000 in this case.