mysql> show variables like '%log%';
+---------------------------------+------------------------------------+
| Variable_name | Value |
+---------------------------------+------------------------------------+
| back_log | 50 |
| binlog_cache_size | 32768 |
| binlog_format | MIXED |
| expire_logs_days | 0 |
| general_log | OFF |
| general_log_file | /usr/local/mysql/var/dev.log |
| innodb_flush_log_at_trx_commit | 1 |
| innodb_locks_unsafe_for_binlog | OFF |
| innodb_log_buffer_size | 1048576 |
| innodb_log_file_size | 5242880 |
| innodb_log_files_in_group | 2 |
| innodb_log_group_home_dir | ./ |
| innodb_mirrored_log_groups | 1 |
| log | OFF |
| log_bin | ON |
| log_bin_trust_function_creators | OFF |
| log_bin_trust_routine_creators | OFF |
| log_error | /usr/local/mysql/var/dev.err |
| log_output | FILE |
| log_queries_not_using_indexes | OFF |
| log_slave_updates | OFF |
| log_slow_queries | ON |
| log_warnings | 1 |
| max_binlog_cache_size | 18446744073709547520 |
| max_binlog_size | 1073741824 |
| max_relay_log_size | 0 |
| relay_log | |
| relay_log_index | |
| relay_log_info_file | relay-log.info |
| relay_log_purge | ON |
| relay_log_space_limit | 0 |
| slow_query_log | ON |
| slow_query_log_file | /usr/local/mysql/var/slowquery.log |
| sql_log_bin | ON |
| sql_log_off | OFF |
| sql_log_update | ON |
| sync_binlog | 0 |
+---------------------------------+------------------------------------+
37 rows in set (0.00 sec)
mysql> show binary logs;
+------------------+------------+
| Log_name | File_size |
+------------------+------------+
| mysql-bin.000037 | 122272086 |
| mysql-bin.000038 | 1073752203 |
| mysql-bin.000039 | 387324827 |
| mysql-bin.000040 | 1073741879 |
| mysql-bin.000041 | 1074498356 |
| mysql-bin.000042 | 1074475113 |
| mysql-bin.000043 | 1073923177 |
| mysql-bin.000044 | 359009653 |
+------------------+------------+
8 rows in set (0.00 sec)
mysql> purge binary logs to 'mysql-bin.000041';
Query OK, 0 rows affected (4.31 sec)
mysql> show binary logs;
+------------------+------------+
| Log_name | File_size |
+------------------+------------+
| mysql-bin.000041 | 1074498356 |
| mysql-bin.000042 | 1074475113 |
| mysql-bin.000043 | 1073923177 |
| mysql-bin.000044 | 359010115 |
+------------------+------------+
4 rows in set (0.00 sec)
mysql> set global expire_logs_days=3;
Query OK, 0 rows affected (0.06 sec)
/etc/my.cnf
add
expire_logs_days = 3
这里需要重启 但尚未重启 等待下次重启即可生效
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