Mariadb 通过binlog恢复删除（drop table）的数据

时间:2021-07-27
本文章向大家介绍Mariadb 通过binlog恢复删除（drop table）的数据，主要包括Mariadb 通过binlog恢复删除（drop table）的数据使用实例、应用技巧、基本知识点总结和需要注意事项，具有一定的参考价值，需要的朋友可以参考一下。

            首先要在数据库中开启binlog，在配置文件中加入这一句。

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
log-error=/var/log/mariadb/mariadb.log
pid-file=/run/mariadb/mariadb.pid
log-bin=mysql-bin

           用此命令可以查看是否启用：show variables like '%sql_log_bin%';

            在数据库中添加测试数据库及测试表：

MariaDB [test]> create table t3(id int ,name varchar(50));
Query OK, 0 rows affected (0.008 sec)

MariaDB [test]> insert into t3 values(1,'11111111111');
Query OK, 1 row affected (0.002 sec)

MariaDB [test]> insert into t3 values(2,'11111111');
Query OK, 1 row affected (0.013 sec)

MariaDB [test]> insert into t3 values(3,'11aa111111');
Query OK, 1 row affected (0.002 sec)

MariaDB [test]> insert into t3 values(4,'11aa111');
Query OK, 1 row affected (0.002 sec)

MariaDB [test]> insert into t3 values(4,'11aa111');
Query OK, 1 row affected (0.001 sec)

MariaDB [test]> select * from t3;
+------+-------------+
| id   | name        |
+------+-------------+
|    1 | 11111111111 |
|    2 | 11111111    |
|    3 | 11aa111111  |
|    4 | 11aa111     |
|    4 | 11aa111     |
+------+-------------+
5 rows in set (0.001 sec)

MariaDB [test]> delete from t3 where id=4;
Query OK, 2 rows affected (0.002 sec)

MariaDB [test]> select * from t3;
+------+-------------+
| id   | name        |
+------+-------------+
|    1 | 11111111111 |
|    2 | 11111111    |
|    3 | 11aa111111  |
+------+-------------+
3 rows in set (0.000 sec)

          查看binlog记录的详细信息：

MariaDB [test]> show binary logs;
+------------------+-----------+
| Log_name         | File_size |
+------------------+-----------+
| mysql-bin.000001 |      2782 |
| mysql-bin.000002 |       385 |
+------------------+-----------+
2 rows in set (0.002 sec)

MariaDB [test]> show master status;
+------------------+----------+--------------+------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB |
+------------------+----------+--------------+------------------+
| mysql-bin.000002 |      385 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.000 sec)

MariaDB [test]> show binlog events in 'mysql-bin.000002';
+------------------+-----+-------------------+-----------+-------------+------------------------------------------------+
| Log_name         | Pos | Event_type        | Server_id | End_log_pos | Info                                           |
+------------------+-----+-------------------+-----------+-------------+------------------------------------------------+
| mysql-bin.000002 |   4 | Format_desc       |         1 |         256 | Server ver: 10.3.27-MariaDB-log, Binlog ver: 4 |
| mysql-bin.000002 | 256 | Gtid_list         |         1 |         299 | [0-1-654]                                      |
| mysql-bin.000002 | 299 | Binlog_checkpoint |         1 |         342 | mysql-bin.000001                               |
| mysql-bin.000002 | 342 | Binlog_checkpoint |         1 |         385 | mysql-bin.000002                               |
+------------------+-----+-------------------+-----------+-------------+------------------------------------------------+
4 rows in set (0.001 sec)

MariaDB [test]> show binlog events in 'mysql-bin.000001';
+------------------+------+-------------------+-----------+-------------+-------------------------------------------------------+
| Log_name         | Pos  | Event_type        | Server_id | End_log_pos | Info                                                  |
+------------------+------+-------------------+-----------+-------------+-------------------------------------------------------+
| mysql-bin.000001 |    4 | Format_desc       |         1 |         256 | Server ver: 10.3.27-MariaDB-log, Binlog ver: 4        |
| mysql-bin.000001 |  256 | Gtid_list         |         1 |         299 | [0-1-643]                                             |
| mysql-bin.000001 |  299 | Binlog_checkpoint |         1 |         342 | mysql-bin.000001                                      |
| mysql-bin.000001 |  342 | Gtid              |         1 |         384 | BEGIN GTID 0-1-644                                    |
| mysql-bin.000001 |  384 | Annotate_rows     |         1 |         439 | insert into t2 values(2,'aaaaa')                      |
| mysql-bin.000001 |  439 | Table_map         |         1 |         487 | table_id: 20 (test.t2)                                |
| mysql-bin.000001 |  487 | Write_rows_v1     |         1 |         531 | table_id: 20 flags: STMT_END_F                        |
| mysql-bin.000001 |  531 | Xid               |         1 |         562 | COMMIT /* xid=9 */                                    |
| mysql-bin.000001 |  562 | Gtid              |         1 |         604 | BEGIN GTID 0-1-645                                    |
| mysql-bin.000001 |  604 | Annotate_rows     |         1 |         659 | insert into t2 values(3,'bbaaa')                      |
| mysql-bin.000001 |  659 | Table_map         |         1 |         707 | table_id: 20 (test.t2)                                |
| mysql-bin.000001 |  707 | Write_rows_v1     |         1 |         751 | table_id: 20 flags: STMT_END_F                        |
| mysql-bin.000001 |  751 | Xid               |         1 |         782 | COMMIT /* xid=10 */                                   |
| mysql-bin.000001 |  782 | Gtid              |         1 |         824 | BEGIN GTID 0-1-646                                    |
| mysql-bin.000001 |  824 | Annotate_rows     |         1 |         882 | insert into t2 values(4,'baaabaaa')                   |
| mysql-bin.000001 |  882 | Table_map         |         1 |         930 | table_id: 20 (test.t2)                                |
| mysql-bin.000001 |  930 | Write_rows_v1     |         1 |         977 | table_id: 20 flags: STMT_END_F                        |
| mysql-bin.000001 |  977 | Xid               |         1 |        1008 | COMMIT /* xid=11 */                                   |
| mysql-bin.000001 | 1008 | Gtid              |         1 |        1050 | BEGIN GTID 0-1-647                                    |
| mysql-bin.000001 | 1050 | Annotate_rows     |         1 |        1098 | delete from t2 where id=1                             |
| mysql-bin.000001 | 1098 | Table_map         |         1 |        1146 | table_id: 20 (test.t2)                                |
| mysql-bin.000001 | 1146 | Delete_rows_v1    |         1 |        1190 | table_id: 20 flags: STMT_END_F                        |
| mysql-bin.000001 | 1190 | Xid               |         1 |        1221 | COMMIT /* xid=13 */                                   |
| mysql-bin.000001 | 1221 | Gtid              |         1 |        1263 | GTID 0-1-648                                          |
| mysql-bin.000001 | 1263 | Query             |         1 |        1371 | use `test`; create table t3(id int ,name varchar(50)) |
| mysql-bin.000001 | 1371 | Gtid              |         1 |        1413 | BEGIN GTID 0-1-649                                    |
| mysql-bin.000001 | 1413 | Annotate_rows     |         1 |        1474 | insert into t3 values(1,'11111111111')                |
| mysql-bin.000001 | 1474 | Table_map         |         1 |        1522 | table_id: 21 (test.t3)                                |
| mysql-bin.000001 | 1522 | Write_rows_v1     |         1 |        1572 | table_id: 21 flags: STMT_END_F                        |
| mysql-bin.000001 | 1572 | Xid               |         1 |        1603 | COMMIT /* xid=23 */                                   |
| mysql-bin.000001 | 1603 | Gtid              |         1 |        1645 | BEGIN GTID 0-1-650                                    |
| mysql-bin.000001 | 1645 | Annotate_rows     |         1 |        1703 | insert into t3 values(2,'11111111')                   |
| mysql-bin.000001 | 1703 | Table_map         |         1 |        1751 | table_id: 21 (test.t3)                                |
| mysql-bin.000001 | 1751 | Write_rows_v1     |         1 |        1798 | table_id: 21 flags: STMT_END_F                        |
| mysql-bin.000001 | 1798 | Xid               |         1 |        1829 | COMMIT /* xid=24 */                                   |
| mysql-bin.000001 | 1829 | Gtid              |         1 |        1871 | BEGIN GTID 0-1-651                                    |
| mysql-bin.000001 | 1871 | Annotate_rows     |         1 |        1931 | insert into t3 values(3,'11aa111111')                 |
| mysql-bin.000001 | 1931 | Table_map         |         1 |        1979 | table_id: 21 (test.t3)                                |
| mysql-bin.000001 | 1979 | Write_rows_v1     |         1 |        2028 | table_id: 21 flags: STMT_END_F                        |
| mysql-bin.000001 | 2028 | Xid               |         1 |        2059 | COMMIT /* xid=25 */                                   |
| mysql-bin.000001 | 2059 | Gtid              |         1 |        2101 | BEGIN GTID 0-1-652                                    |
| mysql-bin.000001 | 2101 | Annotate_rows     |         1 |        2158 | insert into t3 values(4,'11aa111')                    |
| mysql-bin.000001 | 2158 | Table_map         |         1 |        2206 | table_id: 21 (test.t3)                                |
| mysql-bin.000001 | 2206 | Write_rows_v1     |         1 |        2252 | table_id: 21 flags: STMT_END_F                        |
| mysql-bin.000001 | 2252 | Xid               |         1 |        2283 | COMMIT /* xid=26 */                                   |
| mysql-bin.000001 | 2283 | Gtid              |         1 |        2325 | BEGIN GTID 0-1-653                                    |
| mysql-bin.000001 | 2325 | Annotate_rows     |         1 |        2382 | insert into t3 values(4,'11aa111')                    |
| mysql-bin.000001 | 2382 | Table_map         |         1 |        2430 | table_id: 21 (test.t3)                                |
| mysql-bin.000001 | 2430 | Write_rows_v1     |         1 |        2476 | table_id: 21 flags: STMT_END_F                        |
| mysql-bin.000001 | 2476 | Xid               |         1 |        2507 | COMMIT /* xid=27 */                                   |
| mysql-bin.000001 | 2507 | Gtid              |         1 |        2549 | BEGIN GTID 0-1-654                                    |
| mysql-bin.000001 | 2549 | Annotate_rows     |         1 |        2597 | delete from t3 where id=4                             |
| mysql-bin.000001 | 2597 | Table_map         |         1 |        2645 | table_id: 21 (test.t3)                                |
| mysql-bin.000001 | 2645 | Delete_rows_v1    |         1 |        2704 | table_id: 21 flags: STMT_END_F                        |
| mysql-bin.000001 | 2704 | Xid               |         1 |        2735 | COMMIT /* xid=29 */                                   |
| mysql-bin.000001 | 2735 | Rotate            |         1 |        2782 | mysql-bin.000002;pos=4                                |
+------------------+------+-------------------+-----------+-------------+-------------------------------------------------------+
56 rows in set (0.001 sec)

        测试删表

MariaDB [test]> drop table t3;
Query OK, 0 rows affected (0.017 sec)

MariaDB [test]> select * from t3;
ERROR 1146 (42S02): Table 'test.t3' doesn't exist

       通过binlog文件恢复相关的SQL语句：

[root@localhost mysql]# mysqlbinlog --start-position=1263 --stop-position=2476 mysql-bin.000001 > t3.sql

       停止记录相关日志：

MariaDB [test]> set sql_log_bin=0;
Query OK, 0 rows affected (0.001 sec)

       执行恢复文件中的相关语句：

MariaDB [test]> source /var/lib/mysql/t3.sql
Query OK, 0 rows affected (0.001 sec)

Query OK, 0 rows affected (0.000 sec)

Query OK, 0 rows affected (0.001 sec)

Query OK, 0 rows affected (0.000 sec)

Query OK, 0 rows affected (0.000 sec)

Database changed

     测试恢复情况：

MariaDB [test]> show tables;
+----------------+
| Tables_in_test |
+----------------+
| t              |
| t2             |
| t3             |
+----------------+
3 rows in set (0.001 sec)

MariaDB [test]> select * from t3;
+------+-------------+
| id   | name        |
+------+-------------+
|    1 | 11111111111 |
|    2 | 11111111    |
|    3 | 11aa111111  |
|    4 | 11aa111     |
+------+-------------+
4 rows in set (0.001 sec)

     恢复日志记录模式：

MariaDB [test]> set sql_log_bin=1;
Query OK, 0 rows affected (0.001 sec)

原文地址：https://www.cnblogs.com/zhongjicainiao/p/15066341.html

随机文章
本站知识点必读
最近更新