I installed eventgen from https://github.com/splunk/eventgen, followed the instructions explained here https://www.youtube.com/watch?v=9S-ZeGEfRKg&feature=youtu.be&hd=1by letter
1- execute index=_internal | reverse | fields index, host, source, sourcetype, _raw, _time, then export data to splunk_internal.csv, and rename _internal with main
2- create a new App invisible
3- create a directory samples put in it my csv
4- add eventgen.conf to directory local,
5- rename stanza with my file name.
6- restart splunk
7- when i execute * command, all I got is: