MySQL/MariaDB数据库的复制监控和维护

　　　 　　MySQL/MariaDB数据库的复制监控和维护

　　　　　　　　　　　　　　　　　　　　　　　作者：尹正杰 

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一.清理日志

1>.删除指定日志文件名称之前的日志（也可用基于时间）

MariaDB [yinzhengjie]> SHOW BINARY LOGS;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |       351 |
| mysql-bin.000002 |       375 |
| mysql-bin.000003 |      1014 |
| mysql-bin.000004 |      1303 |
| mysql-bin.000005 |      1141 |
+------------------+-----------+
rows in set (0.00 sec)

MariaDB [yinzhengjie]> 
MariaDB [yinzhengjie]> PURGE BINARY LOGS TO 'mysql-bin.000003';  　　　　　　　　#删除"mysql-bin.000003"之前的日志
Query OK, 0 rows affected (0.01 sec)

MariaDB [yinzhengjie]> 
MariaDB [yinzhengjie]> SHOW BINARY LOGS;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000003 |      1014 |
| mysql-bin.000004 |      1303 |
| mysql-bin.000005 |      1141 |
+------------------+-----------+
rows in set (0.00 sec)

MariaDB [yinzhengjie]> 
MariaDB [yinzhengjie]> SYSTEM ls -l /data/logbin/
total 16
-rw-rw---- 1 mysql mysql 1014 Nov  4 19:52 mysql-bin.000003
-rw-rw---- 1 mysql mysql 1303 Nov  4 21:53 mysql-bin.000004
-rw-rw---- 1 mysql mysql 1141 Nov  4 22:06 mysql-bin.000005
-rw-rw---- 1 mysql mysql   90 Nov  4 22:21 mysql-bin.index
MariaDB [yinzhengjie]> 
MariaDB [yinzhengjie]> SYSTEM cat /data/logbin/mysql-bin.index
/data/logbin/mysql-bin.000003
/data/logbin/mysql-bin.000004
/data/logbin/mysql-bin.000005
MariaDB [yinzhengjie]> 
MariaDB [yinzhengjie]> 

MariaDB [yinzhengjie]> PURGE BINARY LOGS TO 'mysql-bin.000003';　　　　　　　　#删除"mysql-bin.000003"之前的日志