how to change innodb_autoinc_lock_mode = 0 (no replies)

I need to change innodb_autoinc_lock_mode to 0 because my auto incrementing is skipping values.

I cannot find any .cnf file that sets the innodb_autoinc_lock_mode value. The only .cnf files I can find are relatively empty.

I've tried restarting the server with the flag --innodb_autoinc_lock_mode = 0 but that doesn't do anything.

I'm completely clue less, how do I set my innodb_autoinc_lock_mode value?