刪除MySQL二進位日誌命令與例子詳解

方法一，刪除全部二進位日誌：

在mysql上執行reset master命令，那麼就清除了所有的mysql-bin.*日誌，並且以後記錄檔名從mysql-bin.000001開始

reset master

刪除部分日誌：

代碼如下	複製代碼
PURGE MASTER LOGS TO & PURGE MASTER LOGS BEFORE PURGE MASTER LOGS TO 'mysql-bin.******'命令，是將'******'編號之前的所有日誌

進行刪除

PURGE MASTER LOGS BEFORE 'yyyy-mm-dd hh:mm:ss'命令，是將在'yyyy-mm-dd hh:mm:ss'時間之前的所有日誌進行刪除

方法二,或者使用PURGE

PURGE {MASTER | BINARY} LOGS TO ‘log_name’
 　　PURGE {MASTER | BINARY} LOG

查看日誌

代碼如下

複製代碼

mysql> show binary logs; +------------------+-----------+ | Log_name         | File_size | +------------------+-----------+ | mysql-bin.000001 |   1357315 | | mysql-bin.000002 |       117 | | mysql-bin.000003 |    404002 | | mysql-bin.000004 |   2050722 | | mysql-bin.000005 |    139103 | | mysql-bin.000006 |     46702 | | mysql-bin.000007 |       117 | | mysql-bin.000008 |        98 | | mysql-bin.000009 |       117 | | mysql-bin.000010 |      1254 | | mysql-bin.000011 |       117 | | mysql-bin.000012 |  29394942 | | mysql-bin.000013 |    422100 | | mysql-bin.000014 |       117 | | mysql-bin.000015 |       117 | | mysql-bin.000016 |        98 | | mysql-bin.000017 |       117 | | mysql-bin.000018 |       117 | | mysql-bin.000019 |    285300 | | mysql-bin.000020 |    181229 | | mysql-bin.000021 |        98 | +------------------+-----------+ 21 rows in set (0.03 sec)

刪除bin-log(刪除mysql-bin.000018之前的所有二進位記錄檔)

 

代碼如下	複製代碼
mysql> purge binary logs to 'mysql-bin.000018'; Query OK, 0 rows affected (0.08 sec) mysql> show binary logs; +------------------+-----------+ | Log_name         | File_size | +------------------+-----------+ | mysql-bin.000018 |       117 | | mysql-bin.000019 |    285300 | | mysql-bin.000020 |    181229 | | mysql-bin.000021 |        98 | +------------------+-----------+ 4 rows in set (0.00 sec)

查看日誌

代碼如下

複製代碼

mysql> show binlog events; +------------------+-----+-------------+-----------+-------------+---------------------------------------+ | Log_name         | Pos | Event_type  | Server_id | End_log_pos | Info                                  | +------------------+-----+-------------+-----------+- www.111cn.net ------------+---------------------------------------+ | mysql-bin.000018 |   4 | Format_desc |         1 |          98 | Server ver: 5.0.45-log, Binlog ver: 4 | | mysql-bin.000018 |  98 | Stop        |         1 |         117 |                                       | +------------------+-----+-------------+-----------+-------------+---------------------------------------+ 2 rows in set (0.01 sec)

方法三，設定日誌到期時間：

修改my.cnf

代碼如下	複製代碼
expire_log_day=5

這裡設定儲存5天的日誌，超過5天的日誌會被自動刪除

方法四，如果是linux系統可以使用rm刪除

刪除二進位日誌，啟動服務

代碼如下	複製代碼
# c -rf /mybinlog/* # netstat -tnlp 查看啟動的mysql進程號 tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN 2523/mysql # kill 2523 （注意，如果在備份之前mysql服務是開啟的，重啟是不成功的，需要把這個進程先kill掉） # service mysqld restart