flush logs;
set global expire_logs_days = 3;
show variables like 'log%';
Variable_name	Value
log	ON
log_bin	OFF
log_bin_trust_function_creators	ON
log_error	
log_queries_not_using_indexes	OFF
log_slave_updates	OFF
log_slow_queries	OFF
log_warnings	1
flush logs;
show variables like 'log%';
Variable_name	Value
log	ON
log_bin	OFF
log_bin_trust_function_creators	ON
log_error	
log_queries_not_using_indexes	OFF
log_slave_updates	OFF
log_slow_queries	OFF
log_warnings	1
set global expire_logs_days = 0;
