[root@syslog bin]# ./splunk clean eventdata
In order to clean, Splunkd must not be running.
Attempting to run splunkd fails with a libssl library not existing.
Wasnt able to locate that one anywhere...
I'm running CENTOS 6.4
The warning about libssl is almost certainly because you are trying to run splunkd directly, instead of splunk.
It's exactly like the error message says - you can't clean your index while Splunk is running. Run "splunk stop" (NOT "splunkd stop", splunkd is not meant to be run directly by users), then clean out your index(es).