MySQL中MyFlash如何安装使用
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Myflash的安装与使用
1、环境说明
1）centos 7.x
2）mysql5.7.21 限制binlog格式必须为row，且binlog_row_image=full
只支持DML的回滚(insert、delete、updte)
操作对象test01库、users表
3）Myflash
2、安装Myflash
1）安装依赖包
yum install gcc* pkg-config glib2 libgnomeui-devel -y
2）安装
git clone https://github.com/Meituan-Dianping/MyFlash.git
cd MyFlash
gcc -w pkg-config --cflags --libs glib-2.0 source/ binlogParseGlib.c -o binary/flashback
cd binary
./flashback --help
显示帮助文档即可说明安装成功
3)设置环境变量
vim /etc/profile
最后一行添加
alias flashback=“/opt/MyFlash/binary/flashback"
source /etc/profile
3、使用：?下面的这些参数是可以任意组合的。
1.databaseNames 指定需要回滚的数据库名。多个数据库可以用“,”隔开。如果不指定该参数，相当于指定了所有数据库。 2.tableNames?指定需要回滚的表名。多个表可以用“,”隔开。如果不指定该参数，相当于指定了所有表。
3.start-position?指定回滚开始的位置。如不指定，从文件的开始处回滚。请指定正确的有效的位置，否则无法回滚
4.stop-position?指定回滚结束的位置。如不指定，回滚到文件结尾。请指定正确的有效的位置，否则无法回滚
5.start-datetime?指定回滚的开始时间。注意格式必须是 %Y-%m-%d %H:%M:%S。 如不指定，则不限定时间
6.stop-datetime?指定回滚的结束时间。注意格式必须是 %Y-%m-%d %H:%M:%S。 如不指定，则不限定时间
7.sqlTypes?指定需要回滚的sql类型。目前支持的过滤类型是INSERT, UPDATE ,DELETE。多个类型可以用“,”隔开。
8.maxSplitSize?一旦指定该参数，对文件进行固定尺寸的分割（单位为M），过滤条件有效，但不进行回滚操作。该参数主要用来将大的binlog文件切割，防止单次应用的binlog尺寸过大，对线上造成压力
9.binlogFileNames?指定需要回滚的binlog文件，目前只支持单个文件，后续会增加多个文件支持
10.outBinlogFileNameBase?指定输出的binlog文件前缀，如不指定，则默认为binlog_output_base.flashback
11.logLevel?仅供开发者使用，默认级别为error级别。在生产环境中不要修改这个级别，否则输出过多
12.include-gtids?指定需要回滚的gtid,支持gtid的单个和范围两种形式。
13.exclude-gtids?指定不需要回滚的gtid，用法同include-gtids
4、案例1
1）创建库和表
use test01
Database changed
(root@localhost:mysql.sock) [test01]>create table users(
-> id bigint unsigned NOT NULL AUTO_INCREMENT,
-> realname varchar(20) not null comment '真实姓名',
-> age int not null default '20' comment '年龄',
-> primary key(id)
-> )engine=innodb default charset=utf8mb4 collate=utf8mb4_unicode_ci comment '测试用户表';
Query OK, 0 rows affected (0.60 sec)
2)造数据
(root@localhost:mysql.sock) [test01]>insert into users (realname,age) values('kitten','25');
Query OK, 1 row affected (0.03 sec)
(root@localhost:mysql.sock) [test01]>insert into users (realname,age) select realname,age from user;
ERROR 1146 (42S02): Table 'test01.user' doesn't exist
(root@localhost:mysql.sock) [test01]>insert into users (realname,age) select realname,age from users;
Query OK, 1 row affected (0.03 sec)
Records: 1 Duplicates: 0 Warnings: 0
(root@localhost:mysql.sock) [test01]>insert into users (realname,age) select realname,age from users;
Query OK, 2 rows affected (0.05 sec)
Records: 2 Duplicates: 0 Warnings: 0
(root@localhost:mysql.sock) [test01]>insert into users (realname,age) select realname,age from users;
Query OK, 4 rows affected (0.05 sec)
Records: 4 Duplicates: 0 Warnings: 0
(root@localhost:mysql.sock) [test01]>insert into users (realname,age) select realname,age from users;
Query OK, 8 rows affected (0.03 sec)
Records: 8 Duplicates: 0 Warnings: 0
(root@localhost:mysql.sock) [test01]>select count(*) from users;
+----------+
| count(*) |
+----------+
| 16 |
+----------+
1 row in set (0.00 sec)
(root@localhost:mysql.sock) [test01]>select * from users;
+----+----------+-----+
| id | realname | age |
+----+----------+-----+
| 1 | kitten | 25 |
| 2 | kitten | 25 |
| 3 | kitten | 25 |
| 4 | kitten | 25 |
| 6 | kitten | 25 |
| 7 | kitten | 25 |
| 8 | kitten | 25 |
| 9 | kitten | 25 |
| 13 | kitten | 25 |
| 14 | kitten | 25 |
| 15 | kitten | 25 |
| 16 | kitten | 25 |
| 17 | kitten | 25 |
| 18 | kitten | 25 |
| 19 | kitten | 25 |
| 20 | kitten | 25 |
+----+----------+-----+
16 rows in set (0.00 sec)
3)删数据
delete from user where id<10;
(root@localhost:mysql.sock) [test01]>select
-> * from users;
+----+----------+-----+
| id | realname | age |
+----+----------+-----+
| 13 | kitten | 25 |
| 14 | kitten | 25 |
| 15 | kitten | 25 |
| 16 | kitten | 25 |
| 17 | kitten | 25 |
| 18 | kitten | 25 |
| 19 | kitten | 25 |
| 20 | kitten | 25 |
+----+----------+-----+
8 rows in set (0.00 sec)
5)查看binlog 确认start position \stop position
#mysqlbinlog /data/mysqldata/mysql-bin.000005 –base64-output=decode-rows -v
#180308 13:35:46 server id 223 end_log_pos 29355 CRC32 0x1b4db5f5 Query thread_id=692 exec_time=0 error_code=0
SET TIMESTAMP=1520487346;
BEGIN
;
# at 29355
#180308 13:35:46 server id 223 end_log_pos 29409 CRC32 0x662b1568 Table_map: `test01`.`users` mapped to number 117
# at 29409
#180308 13:35:46 server id 223 end_log_pos 29604 CRC32 0x4e984497 Delete_rows: table id 117 flags: STMT_END_F
BINLOG '
ssugWhPfAAAANgAAAOFyAAAAAHUAAAAAAAEABnRlc3QwMQAFdXNlcnMAAwgPAwJQAABoFStm
ssugWiDfAAAAwwAAAKRzAAAAAHUAAAAAAAEAAgAD//gBAAAAAAAAAAZraXR0ZW4ZAAAA+AIAAAAA
AAAABmtpdHRlbhkAAAD4AwAAAAAAAAAGa2l0dGVuGQAAAPgEAAAAAAAAAAZraXR0ZW4ZAAAA+AYA
AAAAAAAABmtpdHRlbhkAAAD4BwAAAAAAAAAGa2l0dGVuGQAAAPgIAAAAAAAAAAZraXR0ZW4ZAAAA
+AkAAAAAAAAABmtpdHRlbhkAAACXRJhO
';
### DELETE FROM `test01`.`users`
### WHERE
### @1=1
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=2
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=3
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=4
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=6
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=7
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=8
### @2='kitten'
### @3=25
### DELETE FROM `test01`.`users`
### WHERE
### @1=9
### @2='kitten'
### @3=25
# at 29604
#180308 13:35:46 server id 223 end_log_pos 29635 CRC32 0x443a1025 Xid = 4813
COMMIT;
mysqlbinlog: File '–base64-output=decode-rows' not found (Errcode: 2 - No such file or directory)
SET @@SESSION.GTID_NEXT= 'AUTOMATIC' ;
DELIMITER ;
# End of log file
;
;
Start-positon=29216
Stop-position=29635
6)生成binlog日志
flashback —binlogFileNames=/data/mysqldata/mysql-bin.00005 —start-position= 29216—stop-position=29635
默认生成一个binlog_output_base.flashback文件
7）恢复
mysqlbinlog —skip-gtids /opt/MyFlash/binary/binlog_output_base.flashbak|mysql -uroot -p
8)查看数据
(root@localhost:mysql.sock) [test01]>select * from users;
+----+----------+-----+
| id | realname | age |
+----+----------+-----+
| 1 | kitten | 25 |
| 2 | kitten | 25 |
| 3 | kitten | 25 |
| 4 | kitten | 25 |
| 6 | kitten | 25 |
| 7 | kitten | 25 |
| 8 | kitten | 25 |
| 9 | kitten | 25 |
| 13 | kitten | 25 |
| 14 | kitten | 25 |
| 15 | kitten | 25 |
| 16 | kitten | 25 |
| 17 | kitten | 25 |
| 18 | kitten | 25 |
| 19 | kitten | 25 |
| 20 | kitten | 25 |
+——+----------+-----+
确认已经删除的数据已经恢复
5、案例2 —测试updte、delete恢复
1）修改数据
(root@localhost:mysql.sock) [test01]>update users set realname='panxiao',age=28 where id in (1,2,3);
Query OK, 3 rows affected (0.03 sec)
Rows matched: 3 Changed: 3 Warnings: 0
(root@localhost:mysql.sock) [test01]>delete from users where id =8
2）查看当前的数据
(root@localhost:mysql.sock) [test01]>select * from users;
+----+----------+-----+
| id | realname | age |
+----+----------+-----+
| 1 | panxiao | 28 |
| 2 | panxiao | 28 |
| 3 | panxiao | 28 |
| 4 | kitten | 25 |
| 6 | kitten | 25 |
| 7 | kitten | 25 |
| 9 | kitten | 25 |
| 13 | kitten | 25 |
| 14 | kitten | 25 |
| 15 | kitten | 25 |
| 16 | kitten | 25 |
| 17 | kitten | 25 |
| 18 | kitten | 25 |
| 19 | kitten | 25 |
| 20 | kitten | 25 |
+——+----------+-----+
3?3）生成恢复sql
flashback --binlogFileNames=/data/mysqldata/mysql-bin.000005 --start-datetime="2018-03-08 14:13:00" --stop-datetime="2018-03-08 14:23:00" --databaseNames=test01 --tableNames=users --sqlTypes='UPDATE','DELETE' —outBinlogFileNameBase=test01_users
4）查看生成的binlog
#mysqlbinlog --no-defaults --base64-output=decode-row -vv test01_users.flashback
;
;
DELIMITER ;
# at 4
#180306 20:14:47 server id 223 end_log_pos 123 CRC32 0xb78347d8 Start: binlog v 4, server v 5.7.21-log created 180306 20:14:47 at startup
# Warning: this binlog is either in use or was not closed properly.
ROLLBACK;
# at 123
#180308 14:19:18 server id 223 end_log_pos 177 CRC32 0x5fd8b365 Table_map: `test01`.`users` mapped to number 117
# at 177
#180308 14:19:18 server id 223 end_log_pos 232 CRC32 0x608a735a Write_rows: table id 117 flags: STMT_END_F
### INSERT INTO `test01`.`users`
### SET
### @1=8
### @2='kitten'
### @3=25
# at 232
#180308 14:17:56 server id 223 end_log_pos 286 CRC32 0xf48cb3b5 Table_map: `test01`.`users` mapped to number 117
# at 286
#180308 14:17:56 server id 223 end_log_pos 445 CRC32 0xcd45ef63 Update_rows: table id 117 flags: STMT_END_F
### UPDATE `test01`.`users`
### WHERE
### @1=1
### @2='panxiao'
### @3=28
### SET
### @1=1
### @2='kitten'
### @3=25
### UPDATE `test01`.`users`
### WHERE
### @1=2
### @2='panxiao'
### @3=28
### SET
### @1=2
### @2='kitten'
### @3=25
### UPDATE `test01`.`users`
### WHERE
### @1=3
### @2='panxiao'
### @3=28
### SET
### @1=3
### @2='kitten'
### @3=25
SET @@SESSION.GTID_NEXT= 'AUTOMATIC' ;
DELIMITER ;
# End of log file
;
;
4）恢复sql
mysqlbinlog --no-defaults test01_users.flashback |mysql -uroot -p
5）查看数据 —已经恢复
(root@localhost:mysql.sock) [test01]>select * from users;
+----+----------+-----+
| id | realname | age |
+----+----------+-----+
| 1 | kitten | 25 |
| 2 | kitten | 25 |
| 3 | kitten | 25 |
| 4 | kitten | 25 |
| 6 | kitten | 25 |
| 7 | kitten | 25 |
| 8 | kitten | 25 |
| 9 | kitten | 25 |
| 13 | kitten | 25 |
| 14 | kitten | 25 |
| 15 | kitten | 25 |
| 16 | kitten | 25 |
| 17 | kitten | 25 |
| 18 | kitten | 25 |
| 19 | kitten | 25 |
| 20 | kitten | 25 |
感谢各位的阅读！关于“MySQL中MyFlash如何安装使用”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，让大家可以学到更多知识，如果觉得文章不错，可以把它分享出去让更多的人看到吧！
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