恢复数据的重要命令如下
mysql> flush logs;
默认的日志是mysql-bin.000001,现在刷新了重新开启一个就多了一个mysql-bin.000002
./mysqlbinlog --no-defaults binlog日志名,来查看日志
[root@localhost bin]# ./mysqlbinlog --no-defaults ../var/mysql-bin.000001 | more //查看bin-log日志的内容
[root@localhost bin]# ./mysqlbinlog --no-defaults ../var/mysql-bin.000001 | ./mysql -uroot -p
//恢复mysql-bin.000001日志的内容
如果需要从某个点恢复到某个点,用以下操作
定位: --start-position 开始点
--stop-position 结束点
--start-date 开始时间
--stop-date 结束时间
现在恢复mysql-bin.000002恢复,从134点开始到386结束
[root@localhost bin]# ./mysqlbinlog --no-defaults --start-position 134 --stop-position=386 ../var/mysql-bin.000002 | ./mysql -uroot -p
/** mysqlbinlog日志恢复数据实验 ****/
//查看一下var下面的内容,现在是没有mysql-log.000001类似的binlog日志的
[root@localhost var]# ls
brocms ibdata1 ib_logfile1 localhost.pid mysql-bin.index
brotherblog ib_logfile0 localhost.err mysql test
[root@localhost var]# ../bin/mysql -uroot -p
//登录数据库
mysql> use test;
//使用test数据库
mysql> flush logs;
//刷新binlog日志,新开一个,现在会在var目录下面生成一个mysql-bin.000001的文件,以下的操作都会记录其中
//创建一个表
mysql> create table user(
-> id int auto_increment primary key,
-> username char(30),
-> password char(32))
-> engine=myisam default charset=utf8;
//插入几条测试数据
mysql> insert into user(username,password) values(1,2);
mysql> insert into user(username,password) values(1,2);
mysql> insert into user(username,password) values(1,2);
//新开一个binlog日志,现在会生成一个名为mysql-bin.000002的文件,下面的操作会记录在mysql-bin.000002的文件中
mysql> flush logs;
//查询一下内容
mysql> select * from user;
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | 1 | 2 |
| 2 | 1 | 2 |
| 3 | 1 | 2 |
+----+----------+----------+
mysql> delete from user;
//现在将数据删除
mysql> drop table user;
//将表删除
mysql> select * from user;
//查看表里面的内容
mysql> \q
Bye
[root@localhost var]# ls
brocms ibdata1 ib_logfile1 localhost.pid mysql-bin.000001 mysql-bin.index
brotherblog ib_logfile0 localhost.err mysql mysql-bin.000002 test
[root@localhost var]# ../bin/mysqlbinlog --no-defaults mysql-bin.000001 | more
//查看mysql-bin.000001里面的内容
[root@localhost var]# ../bin/mysqlbinlog --no-defaults mysql-bin.000002 | more
//查看mysql-bin.000002里面的内容
[root@localhost var]# ../bin/mysqlbinlog --no-defaults mysql-bin.000001 | ../bin/mysql -uroot -p
//用mysql-bin.000001来恢复数据
Enter password:
[root@localhost var]# ../bin/mysql -uroot -p
//进数据库查看
mysql> use test;
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| user |
+----------------+
1 row in set (0.00 sec)
mysql> select * from user;
//查看数据,数据回来了
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | 1 | 2 |
| 2 | 1 | 2 |
| 3 | 1 | 2 |
+----+----------+----------+
3 rows in set (0.00 sec)
mysql> \q
Bye
如果需要从某个点恢复到某个点,用以下操作
定位: --start-position 开始点
--stop-position 结束点
--start-date 开始时间
--stop-date 结束时间
现在恢复mysql-bin.000002恢复,从134点开始到386结束
[root@localhost bin]# ./mysqlbinlog --no-defaults --start-position 134 --stop-position=386 ../var/mysql-bin.000002 | ./mysql -uroot -p