Performance metrics are not being shown for virtual machines
OnApp 5.2.x (and later) with vCloud Director integration
1. Go to the vCD instance that you have added within OnApp, Settings > Compute Resources > 'Name of vCD instance'.
2. Click Tools and then 'vCenter Passwords'.
3. Ensure that all of the fields are correct, in order to connect to all of your vCenter's within your entire vCloud Director environment.
4. Once the green light is shown for each vCenter, performance metrics will be shown for all virtual machines.
The incorrect vCenter credentials are the reason, why the performance metrics are not being shown for virtual machines in OnApp interface.