mysql binlog占用大量磁盘空间的解决方法

mysql> show variables like '%expire_logs_days%';
+------------------+-------+
| Variable_name    | Value |
+------------------+-------+
| expire_logs_days | 0     |
+------------------+-------+
1 row in set (0.08 sec)

mysql> show variables like '%expire%';
+--------------------------------+--------+
| Variable_name                  | Value  |
+--------------------------------+--------+
| binlog_expire_logs_auto_purge  | ON     |
| binlog_expire_logs_seconds     | 432000 |
| disconnect_on_expired_password | ON     |
| expire_logs_days               | 0      |
+--------------------------------+--------+
4 rows in set (0.00 sec)

mysql> set global expire_logs_days=5;

mysql> set global expire_logs_days=7;
ERROR 3683 (HY000): The option expire_logs_days and binlog_expire_logs_seconds cannot be used together. Please use binlog_expire_logs_seconds to set the expire time (expire_logs_days is deprecated)
mysql> set global binlog_expire_logs_seconds=432000;
Query OK, 0 rows affected (0.00 sec)
 
mysql> 
mysql> show variables like '%expire%';
+--------------------------------+--------+
| Variable_name                  | Value  |
+--------------------------------+--------+
| binlog_expire_logs_auto_purge  | ON     |
| binlog_expire_logs_seconds     | 432000 |
| disconnect_on_expired_password | ON     |
| expire_logs_days               | 0      |
+--------------------------------+--------+
4 rows in set (0.00 sec)

mysql> PURGE {MASTER | BINARY} LOGS TO 'log_name'

mysql> PURGE MASTER LOGS TO 'binlog.1000';

mysql> PURGE {MASTER | BINARY} LOGS BEFORE 'date'

mysql> PURGE MASTER LOGS BEFORE '2023-06-03 12:00:00';

mysql> PURGE MASTER LOGS BEFORE DATE_SUB( NOW( ), INTERVAL 3 DAY);