I am trying to debug a scripted input that isn't running when it should and I want to enable debug logging. When I look at log.cfg there are about 40 settings under splunkd, which one(s) needs to be changed enable this logging? On a side note I stopped splunk and started with the debug flag (service start splunk --debug), but this didn't seem to do anything.
I would probably try experimenting with each of these in turn to see which combination gives you the debug output you need. The nice thing about enabling these as REST calls is that you don't have to restart splunkd inbetween. But, these settings are not persisted - they'll be undone when you do restart splunkd.