mysql通过二进制日志恢复数据库

一.打开主配置文件 添加以下参数

[root@db1 ~]# vim /etc/my.cnf

server_id=6   # 服务id

log_bin=/data/binlog/mysql-bin #二进制日志存放路径和二进制日志的前缀  /data/binlog目录要提前创建好,并更改所属者和组为mysql mysql-bin会自动生成

binlog_format=row   #设置日志文件记录DML语句的格式

二.重启mysql

[root@db1 ~]# systemctl restart mysql

三.登录mysql

[root@db1 ~]# mysql -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 10

Server version: 5.7.29-log MySQL Community Server (GPL)

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

四.创建一个库并插入些内容

mysql> create database test charset utf8mb4;

Query OK, 1 row affected (0.00 sec)

mysql> use test;

Database changed

mysql> create table t1(id int,name varchar(11));

Query OK, 0 rows affected (0.02 sec)

mysql> insert into t1 values(1,'小明');

Query OK, 1 row affected (0.00 sec)

mysql> insert into t1 values(2,'小陈');

Query OK, 1 row affected (0.00 sec)

mysql> select * from t1;

+------+--------+

| id  | name  |

+------+--------+

|    1 | 小明  |

|    2 | 小陈  |

+------+--------+

2 rows in set (0.00 sec)

五.删除数据库

mysql> drop database test;

Query OK, 1 row affected (0.01 sec)

六.查看二进制日志

mysql> show binary logs;  #查看所有已存在的二进制文件

+------------------+-----------+

| Log_name        | File_size |

+------------------+-----------+

| mysql-bin.000001 |      201 |

| mysql-bin.000002 |      201 |

| mysql-bin.000003 |      201 |

| mysql-bin.000004 |      1992 |

+------------------+-----------+

4 rows in set (0.00 sec)

mysql> show master status; #查看正在使用的二进制文件

+------------------+----------+--------------+------------------+-------------------+

| File            | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |

+------------------+----------+--------------+------------------+-------------------+

| mysql-bin.000004 |    1992 |              |                  |                  |

+------------------+----------+--------------+------------------+-------------------+

1 row in set (0.00 sec)

mysql> show binlog events in 'mysql-bin.000004';  #查看二进制文件记录的事件

+------------------+------+----------------+-----------+-------------+--------------------------------------------------------+

| Log_name        | Pos  | Event_type    | Server_id | End_log_pos | Info                                                  |

+------------------+------+----------------+-----------+-------------+--------------------------------------------------------+

| mysql-bin.000004 |    4 | Format_desc    |        6 |        123 | Server ver: 5.7.29-log, Binlog ver: 4                  |

| mysql-bin.000004 |  123 | Previous_gtids |        6 |        154 |                                                        |

| mysql-bin.000004 |  154 | Anonymous_Gtid |        6 |        219 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 |  219 | Query          |        6 |        336 | create  database binlog charset=utf8mb4                |

| mysql-bin.000004 |  336 | Anonymous_Gtid |        6 |        401 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 |  401 | Query          |        6 |        519 | use `binlog`; create table t1 (id int,name varchar(4)) |

| mysql-bin.000004 |  519 | Anonymous_Gtid |        6 |        584 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 |  584 | Query          |        6 |        658 | BEGIN                                                  |

| mysql-bin.000004 |  658 | Table_map      |        6 |        708 | table_id: 108 (binlog.t1)                              |

| mysql-bin.000004 |  708 | Write_rows    |        6 |        751 | table_id: 108 flags: STMT_END_F                        |

| mysql-bin.000004 |  751 | Table_map      |        6 |        801 | table_id: 108 (binlog.t1)                              |

| mysql-bin.000004 |  801 | Write_rows    |        6 |        844 | table_id: 108 flags: STMT_END_F                        |

| mysql-bin.000004 |  844 | Xid            |        6 |        875 | COMMIT /* xid=26 */                                    |

| mysql-bin.000004 |  875 | Anonymous_Gtid |        6 |        940 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 |  940 | Query          |        6 |        1059 | create database qinagge charset utf8mb4                |

| mysql-bin.000004 | 1059 | Anonymous_Gtid |        6 |        1124 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 1124 | Query          |        6 |        1215 | drop database qinagge                                  |

| mysql-bin.000004 | 1215 | Anonymous_Gtid |        6 |        1280 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 1280 | Query          |        6 |        1399 | create database qiangge charset=utf8mb4                |

| mysql-bin.000004 | 1399 | Anonymous_Gtid |        6 |        1464 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 1464 | Query          |        6 |        1567 | use `qiangge`; create table t1(id int)                |

| mysql-bin.000004 | 1567 | Anonymous_Gtid |        6 |        1632 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 1632 | Query          |        6 |        1707 | BEGIN                                                  |

| mysql-bin.000004 | 1707 | Table_map      |        6 |        1755 | table_id: 110 (qiangge.t1)                            |

| mysql-bin.000004 | 1755 | Write_rows    |        6 |        1795 | table_id: 110 flags: STMT_END_F                        |

| mysql-bin.000004 | 1795 | Xid            |        6 |        1826 | COMMIT /* xid=69 */                                    |

| mysql-bin.000004 | 1826 | Anonymous_Gtid |        6 |        1891 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 1891 | Query          |        6 |        1992 | drop database qiangge                                  |

| mysql-bin.000004 | 1992 | Anonymous_Gtid |        6 |        2057 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 2057 | Query          |        6 |        2167 | create database test charset utf8mb4                  |

| mysql-bin.000004 | 2167 | Anonymous_Gtid |        6 |        2232 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 2232 | Query          |        6 |        2346 | use `test`; create table t1(id int,name varchar(11))  |

| mysql-bin.000004 | 2346 | Anonymous_Gtid |        6 |        2411 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 2411 | Query          |        6 |        2483 | BEGIN                                                  |

| mysql-bin.000004 | 2483 | Table_map      |        6 |        2531 | table_id: 112 (test.t1)                                |

| mysql-bin.000004 | 2531 | Write_rows    |        6 |        2578 | table_id: 112 flags: STMT_END_F                        |

| mysql-bin.000004 | 2578 | Table_map      |        6 |        2626 | table_id: 112 (test.t1)                                |

| mysql-bin.000004 | 2626 | Write_rows    |        6 |        2670 | table_id: 112 flags: STMT_END_F                        |

| mysql-bin.000004 | 2670 | Table_map      |        6 |        2718 | table_id: 112 (test.t1)                                |

| mysql-bin.000004 | 2718 | Update_rows    |        6 |        2775 | table_id: 112 flags: STMT_END_F                        |

| mysql-bin.000004 | 2775 | Xid            |        6 |        2806 | COMMIT /* xid=143 */                                  |

| mysql-bin.000004 | 2806 | Anonymous_Gtid |        6 |        2871 | SET @@SESSION.GTID_NEXT= 'ANONYMOUS'                  |

| mysql-bin.000004 | 2871 | Query          |        6 |        2963 | drop database test                                    |

+------------------+------+----------------+-----------+-------------+--------------------------------------------------------+

43 rows in set (0.00 sec)

找到创建 test库的起点和删除表的起点 

分别是2057和2871

七.把二进制日志输出为sql文件

# start-position输入出入起点  stop-postion输入删除表的起点 /data/binlog/就是一开始设置的存放二进制文件的目录 再跟上当前使用的二进制文件mysql-bin.000004

[root@db1 ~]# mysqlbinlog --start-position=2057 --stop-position=2871 /data/binlog/mysql-bin.000004 > /tmp/test.sql

八.进入数据库开始恢复数据

[root@db1 ~]# mysql -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 12

Server version: 5.7.29-log MySQL Community Server (GPL)

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set sql_log_bin=0;  # 临时关闭恢复时产生的新日志

mysql> source /tmp/test.sql

mysql> set sql_log_bin=1;   改回来

九.查看数据库和数据

mysql> show databases;

+--------------------+

| Database          |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| test              |

+--------------------+

10 rows in set (0.01 sec)

mysql> use test;

Database changed

mysql> select * from t1;

+------+--------+

| id  | name  |

+------+--------+

|    1 | 小明  |

|    2 | 小陈  |

+------+--------+

2 rows in set (0.00 sec)

表和数据还在 恢复成功!!!

---

                                                                    使用gdit的记录模式来恢复数据库

一.打开配置文件添加以下两个参数

[root@db1 ~]# vim /etc/my.cnf

gtid-mode=on   ##开启gtid模式

enforce-gtid-consistency=true ##强制gtid一致性

[root@db1 ~]# systemctl restart mysql---   ###重启服务

二.登录数据库

[root@db1 ~]# mysql -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 2

Server version: 5.7.29-log MySQL Community Server (GPL)

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql>

三.创建一个数据库并插入一些数据

mysql> create database test2 charset utf8mb4;  ###创建一个数据库

Query OK, 1 row affected (0.01 sec)

mysql> use test2;

Database changed

mysql> create table t1(id int, name varchar(11));

Query OK, 0 rows affected (0.02 sec)

mysql> insert into t1 values(1,'小明');

Query OK, 1 row affected (0.00 sec)

mysql> insert into t1 values(2,'小陈');

Query OK, 1 row affected (0.00 sec)

mysql> select * from t1;

+------+--------+

| id  | name  |

+------+--------+

|    1 | 小明  |

|    2 | 小陈  |

+------+--------+

2 rows in set (0.00 sec)

四.删除数据库

mysql> drop database test2;Query OK, 1 row affected (0.02 sec)

五.查看二进制日志记录

mysql> show master status; ##查看当前使用的是哪个二进制日志文件

+------------------+----------+--------------+------------------+------------------------------------------+

| File            | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set                        |

+------------------+----------+--------------+------------------+------------------------------------------+

| mysql-bin.000005 |    1035 |              |                  | eee7e0b6-5466-11ea-9f97-005056bf8ab0:1-4 |

+------------------+----------+--------------+------------------+------------------------------------------+

1 row in set (0.00 sec)

mysql> show binlog events in 'mysql-bin.000005'; ##查看二进制文件发生的事情

发现gdit的1到3是建库和查数据的gdit值

六.把二进制日志信息导出为sql文件

[root@db1 ~]# mysqlbinlog --skip-gtids --include-gtids='eee7e0b6-5466-11ea-9f97-005056bf8ab0:1-3' /data/binlog/mysql-bin.000005 >/tmp/gtid.sql

######--skip-gtids 作用:在导出时,忽略原有的gtid信息,恢复时生成最新的gtid信息######

七.登录数据库 开始恢复数据

[root@db1 ~]# mysql -p

Enter password:

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 3

Server version: 5.7.29-log MySQL Community Server (GPL)

Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> set sql_log_bin=0; 临时关闭恢复时产生的新日志

mysql> source /tmp/gtid.sql;

mysql> set sql_log_bin=1  再开启

mysql> show databases;  ### 查看数据库

+--------------------+

| Database          |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| test2              |

+--------------------+

11 rows in set (0.00 sec)

mysql> select * from t1;  

+------+--------+

| id  | name  |

+------+--------+

|    1 | 小明  |

|    2 | 小陈  |

+------+--------+

2 rows in set (0.00 sec)

数据恢复成功