基于二進制日志數據恢復

mysql數據恢復演練實例

如何按需截取日志

基于position好的截取

--start-position=

--stop-position=

mysqlbinlog --start-position=219 --stop-position=1272 /data/binlog/mysql-bin.000002 >/tmp/back.sql

恢復

刪除庫 mysql> drop database oldboy1;

mysql> show databases;

恢復時不產生二進制日志

mysql> set sql_log_bin=0; //臨時關閉二進制日志

mysql> source /tmp/bin.sql //恢復

基于時間點的截取

--start-datetime

--stop-datetime

for example: 2004-12-25 11:25:56

案例: 使用binlog日志進行數據恢復

模擬:

1.

[(none)]>create database binlog charset utf8mb4;

2.

[(none)]>use binlog;

[binlog]>create table t1(id int);

3.

[binlog]>insert into t1 values(1);

[binlog]>commit;

[binlog]>insert into t1 values(2);

[binlog]>commit;

[binlog]>insert into t1 values(3);

[binlog]>commit;

4.

[binlog]>drop database binlog;

恢復

1、找到起點和終點

mysql> show master status;

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

| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set

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

| mysql-bin.000002 | 1435 | | |

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

mysql> show binlog events in 'mysql-bin.000002';

命令行：mysqlbinlog --start-position=219 --stop-position=1272 /data/binlog/mysql-bin.000002 >/tmp/back.sql

恢復

mysql> set sql_log_bin=0; //臨時關閉二進制日志

mysql> source /tmp/bin.sql //恢復

# 5. 驗證數據

mysql> use binlog

Database changed

mysql> select * from t1;

+------+

| id |

+------+

| 1 |

| 2 |

| 3 |

+------+

總結

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