各位用户为了找寻关于如何利用MySQL的binlog恢复误删数据库详解的资料费劲了很多周折。这里教程网为您整理了关于如何利用MySQL的binlog恢复误删数据库详解的相关资料，仅供查阅，以下为您介绍关于如何利用MySQL的binlog恢复误删数据库详解的详细内容
1 查看当前数据库内容并备份数据库
查看数据库信息：
备份数据库：
? 1 2 3 4[root@localhost ~]# mysqldump -u root -p t > /mnt/t.sql
enter password:
[root@localhost ~]# ll /mnt/t.sql
-rw-r--r-- 1 root root 1771 aug 25 11:56 /mnt/t.sql
2 开启bin_log功能
首先查看数据库是否开启bin_log功能
? 1mysql> show variables like "%log_bin%";
需要修改mysql的配置文件，/etc/的my.cnf，添加一句log_bin = mysql_bin即可
3 模拟误操作（插入3条数据，删除数据库）
? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31mysql> insert into t1 values (3);
query ok, 1 row affected (0.00 sec)
mysql> insert into t1 values (4);
query ok, 1 row affected (0.00 sec)
mysql> insert into t1 values (5);
query ok, 1 row affected (0.00 sec)
mysql> select * from t1;
+------+
| id |
+------+
| 1 |
| 2 |
| 5 |
| 4 |
| 3 |
+------+
5 rows in set (0.00 sec)
mysql> flush logs;
query ok, 0 rows affected (0.00 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+
| file | position | binlog_do_db | binlog_ignore_db |
+------------------+----------+--------------+------------------+
| mysql_bin.000003 | 106 | | |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)
删除数据：
? 1 2 3 4 5mysql> truncate t1;
query ok, 0 rows affected (0.00 sec)
mysql> select * from t1;
empty set (0.00 sec)
此时突然数据库损坏或者人为删除
? 1 2 3 4 5mysql> drop table t1;
query ok, 0 rows affected (0.00 sec)
mysql> show tables;
empty set (0.00 sec)
4 数据恢复
1 用已经备份的/mnt/t.sql来恢复数据
? 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73mysql> source /mnt/t.sql;
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.01 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 2 rows affected (0.00 sec)
records: 2 duplicates: 0 warnings: 0
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
query ok, 0 rows affected (0.00 sec)
mysql> show tables;
+-------------+
| tables_in_t |
+-------------+
| t1 |
+-------------+
1 row in set (0.00 sec)
mysql> select * from t1;
+------+
| id |
+------+
| 1 |
| 2 |
+------+
2 rows in set (0.00 sec)
2 还有三条数据没有恢复，怎么办。只能用bin-log来恢复
? 1[root@localhost ~]# mysqlbinlog --no-defaults /var/lib/mysql/mysql_bin.000002 | mysql -u root -p123.com t
?
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mysql> use t;
reading table information for completion of table and column names
you can turn off this feature to get a quicker startup with -a
database changed
mysql> select * from t1;
+------+
| id |
+------+
| 1 |
| 2 |
| 3 |
| 4 |
| 5 |
+------+
5 rows in set (0.00 sec)
mysql>
5 总结
备份数据
? 1 2 3mysqldump -uroot -p123456 test -l -f '/tmp/test.sql'
-l:读锁（只能读取，不能更新）
-f:即flush logs，可以重新生成新的日志文件，当然包括log-bin日志
查看binlog日志
? 1mysql>show master status;
导入之前备份数据
? 1 2 3mysql -uroot -p t -v -f </mnt/t.sql
-v查看导入的详细信息
-f是当中间遇到错误时，可以skip过去，继续执行下面的语句
恢复binlog-file二进制日志文件
? 1mysqlbinlog --no-defaults binlog-file | mysql -uroot -p t
从某一(367)点开始恢复
? 1mysqlbinlog --no-defaults --stop-position="367" mysql-bin.000001| mysql -uroot -p t
先查好那一点，用more来查看
? 1[root@localhost mysql]# /usr/bin/mysqlbinlog --no-defaults mysql-bin.000002 --start-position="794" --stop-position="1055" | more
然后恢复
? 1[root@localhost mysql]# /usr/bin/mysqlbinlog --no-defaults mysql-bin.000002 --start-position="794" --stop-position="1055" | /usr/bin/mysql -uroot -p t
重置binlog日志
? 1 2 3 4 5 6 7 8 9mysql> reset master;
query ok, 0 rows affected (0.01 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+
| file | position | binlog_do_db | binlog_ignore_db |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 | 106 | | |
+------------------+----------+--------------+------------------+
?
1
mysql> flush logs;#关闭当前的二进制日志文件并创建一个新文件，新的二进制日志文件的名字在当前的二进制文件的编号上加1。
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原文链接：https://juejin.cn/post/7012122461110009863
