Mysql 数据库模拟误操作基于binlog恢复

  mysql5.7  

1.导入测试库emlpoyees数据库

  向数据库中导入employees_db文件 

  进入数据库 > source employees.sql; 

2.创建表

  > use emlpoyees; 

  > create table test1 like employees; 

  > alter table test1 drop primary key; 删除主键 

  ##> alter table test1 drop foregin key; ## 删除外键 

插入数据

  > insert into test1 select * from employees limit 10000; 

  3.mysqldump 备份employees 库 

  /usr/local/mysql-5.7/bin/mysqldump -uroot -poracle -S/home/mysql/mysqldb/db_master/mysql.sock --master-data=2 --single-transaction --databases employees --set-gtid-purged=OFF --compact > employees5.dump 

  4.，模拟业务 

  > insert into test1 select * from employees limit 10000; 

  > delete from test1 limit 100; 

  > create table test2 like employees; 

  5.及时发现问题，进行回滚 

  1） 脚本初始化创建新实例 

  编辑initdb.info 

  [mysql@bogon ~]$ vi initdb.info 

  #IP SOFT_DIR INSTANCE_BASE_DIR INSTANCE_NAME_PREFIX INSTANCE_NAME INSTANCE_PORT SERVER_ID ADMIN_USER ADMIN_PASSWD 

  192.168.1.210 /usr/local/mysql-5.7/ /home/mysql/mysqldb db slave 33333 3333301 root oracle 

  [mysql@bogon ~]$ sh init57_v1.3_20180402.sh 

  2)使用mysqldump 恢复（在employees5.dump的路径下） 

  [mysql@bogon ~]$ /usr/local/mysql-5.7/bin/mysql -uroot -poracle -S/home/mysql/mysqldb/db_slave/mysql.sock test < employees5.dump 

  3）查找对应的binlog点，应用binlog 

  i. 找start点 

  [mysql@bogon ~]$ vi employees5.dump 

  -- CHANGE MASTER TO MASTER_LOG_FILE='master-bin.000013', MASTER_LOG_POS=276137; 

  ii.找stop点，（delete的时刻） 

  [mysql@bogon binlog]$ mysqlbinlog -v -v -v master-bin.000013 >1.txt 

  [mysql@bogon binlog]$ vi 1.txt 

  /delete 查找delete点 

  # at 551869 

  #180807 16:01:41 server id 6666601 end_log_pos 551920 CRC32 0x3ee37a2d Rows_query 

  # delete from test1 limit 100 

  # at 551920 

  #180807 16:01:41 server id 6666601 end_log_pos 551984 CRC32 0x7d5e7aff Table_map: `employees`.`test1` mapped to number 156 

  ii. 应用binlog恢复 

  [mysql@bogon binlog]$ mysqlbinlog 
 --start-position=276137 
 --stop-position=551869 --skip-gtids /home/mysql/mysqldb/db_master/binlog/master-bin.000013|mysql -uroot -poracle -S/home/mysql/mysqldb/db_slave/mysql.sock employees 

  [mysql@bogon ~]$ mysqlbinlog --start-position=554871 --skip-gtids /home/mysql/mysqldb/db_master/binlog/master-bin.000013|mysql -uroot -poracle -S/home/mysql/mysqldb/db_slave/mysql.sock employees 

Mysql 数据库模拟误操作基于binlog恢复

猜你喜欢