This issue is not caused by the Splunk_TA_nix addon app. I do see both cpu and mem data coming in to the splunk enterprise/monitoring instance when doing a preview in the splunk_app_for_nix settings tab.
It appears to be an issue with the splunk_app_for_nix application itself, not being able to interpret or read the incoming data for cpu and mem. The metrics tab on splunk_app_for_nix is also blank.
... View more