RESET MASTER [TO #]
 
Deletes all binary log files listed in the index file,
resets the
binary log index file to be empty, and creates a new binary
log file with a suffix of .000001.
 
If TO # is given, then the first new binary log file will
start from number #.
 
This statement is for use only when the master is started
for the first time, and should never be used if any slaves
are actively replicating from the binary log.
 


URL: https://mariadb.com/kb/en/reset-master/