A,
Well you have two possible issues here depending on where you are talking about looking for graphs.
1. If the graphs you're speaking about are in the AWS component list your issue could be that zenpython is not running. This daemon is responsible for collection of performance data.
or
2. If the graphs are on a seperate Linux device that is hosted in AWS you need to make sure your SSH keys are setup correctly.
One of these two things should solve your problem.
-Rob