TASK: Find out what is wrong with the system

Operator procedure:

Your task is to fix a "problem" that will come up at some point during the experiment. By "problem" we mean a hardware fault (e.g. link down) or a software fault (e.g. process crash).

If you identify a hardware problem, ask the person conducting the experiment to repair the faulty hardware component. You have to follow this protocol because you are not supposed to touch the hardware components used by the system. On the other hand, if there is a software fault, you can fix it yourself without asking for assistance.

End of operator procedure.

Observations:

Keep in mind the system architecture depicted by the figure you were given.

You can rely on a number of tools and log files to monitor the system, for instance:

the Performance window that shows the throughput delivered by the system;
the commands 'ping', 'ps', 'top', and any Linux command that can provide you with useful information regarding the system behavior;
the three apache logs located at '/scratch/httpd/logs';
the tomcat log '/scratch/tomcat/logs/catalina.out'.