mysql binlog恢复数据
常用binlog操作命令：
1、查看所有binlog日志列表
mysql> show master logs;
2、查看当前正在写入的binlog文件
mysql> show master status;
3、刷新log日志，自此刻开始产生一个新编号的binlog日志文件
mysql> flush logs;
注：每当mysqld服务重启时，会自动执行此命令，刷新binlog日志；在mysqldump备份数据时加 -F 选项也会刷新binlog日志；
4、清空所有binlog日志
mysql> reset master;
5、获取binlog文件列表
mysql> show binary logs;
6、查看指定binlog文件的内容
mysql> show binlog events in 'mysql-bin.000006';
根据整个binlog文件恢复
#选择hadoop库
mysql> use hadoop;
#刷新binlog日志，新开一个，现在会在/var/lib/mysql/目录下面生成一个mysql-bin.000002的文件，以下的操作都会记录其中
mysql> flush logs;
Query OK, 0 rows affected (0.02 sec)
mysql> show binary logs;
+------------------+-----------+
| Log_name | File_size |
+------------------+-----------+
| mysql-bin.000001 | 231 |
| mysql-bin.000002 | 106 |
+------------------+-----------+
2 rows in set (0.00 sec)
#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;
Query OK, 0 rows affected (0.01 sec)
#插入几条测试数据
mysql> insert into user(username,password)values(1,1),(2,2),(3,3),(4,4);
Query OK, 4 rows affected (0.00 sec)
Records: 4 Duplicates: 0 Warnings: 0
mysql> select * from user;
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 3 | 3 |
| 4 | 4 | 4 |
+----+----------+----------+
4 rows in set (0.00 sec)
#新开一个binlog日志，现在会在/var/lib/mysql/目录下面生成一个mysql-bin.000003的文件，以下的操作都会记录其中
mysql> flush logs;
Query OK, 0 rows affected (0.02 sec)
#删除表数据
mysql> delete from user;
Query OK, 4 rows affected (0.00 sec)
#删除表
mysql> drop table user;
Query OK, 0 rows affected (0.00 sec)
#验证是否删掉
mysql> select * from user;
ERROR 1146 (42S02): Table 'hadoop.user' doesn't exist
mysql> show binary logs;
+------------------+-----------+
| Log_name | File_size |
+------------------+-----------+
| mysql-bin.000001 | 231 |
| mysql-bin.000002 | 497 |
| mysql-bin.000003 | 267 |
+------------------+-----------+
3 rows in set (0.00 sec)
mysql> \q
Bye
#进入binlog目录
[root@hd3 ~]# cd /var/lib/mysql/
#查看mysql-bin.000002里面的内容
[root@hd3 mysql]# mysqlbinlog --no-defaults mysql-bin.000002 | more
#恢复
[root@hd3 mysql]# mysqlbinlog --no-defaults mysql-bin.000002 | mysql -uroot -p123456
#验证是否恢复成功
[root@hd3 mysql]# mysql -uroot -p
mysql> use hadoop;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> select * from user;
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 3 | 3 |
| 4 | 4 | 4 |
+----+----------+----------+
4 rows in set (0.00 sec)
mysql>
根据binlog的位置恢复
#先插入2条
mysql> insert into user(username,password)values(5,5),(6,6);
Query OK, 2 rows affected (0.00 sec)
Records: 2 Duplicates: 0 Warnings: 0
#删除
mysql> delete from user where id=5 or id=6;
Query OK, 2 rows affected (0.00 sec)
mysql> select * from user;
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 3 | 3 |
| 4 | 4 | 4 |
+----+----------+----------+
4 rows in set (0.00 sec)
mysql> show binlog events;
+------------------+-----+-------------+-----------+-------------+---------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+------------------+-----+-------------+-----------+-------------+---------------------------------------+
| mysql-bin.000001 | 4 | Format_desc | 195 | 106 | Server ver: 5.1.73-log, Binlog ver: 4 |
| mysql-bin.000001 | 106 | Query | 195 | 188 | use `hadoop`; DROP TABLE `user` |
| mysql-bin.000001 | 188 | Rotate | 195 | 231 | mysql-bin.000002;pos=4 |
+------------------+-----+-------------+-----------+-------------+---------------------------------------+
3 rows in set (0.00 sec)
mysql> show binlog events in 'mysql-bin.000003';
+------------------+------+-------------+-----------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------+
| Log_name | Pos | Event_type | Server_id | End_log_pos | Info |
+------------------+------+-------------+-----------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------+
| mysql-bin.000003 | 4 | Format_desc | 195 | 106 | Server ver: 5.1.73-log, Binlog ver: 4 |
| mysql-bin.000003 | 106 | Query | 195 | 187 | use `hadoop`; delete from user |
| mysql-bin.000003 | 187 | Query | 195 | 267 | use `hadoop`; drop table user |
| mysql-bin.000003 | 267 | Query | 195 | 458 | use `hadoop`; create table user(
id int auto_increment primary key,
username char(30),
password char(32)
)engine=myisam default charset=utf8 |
| mysql-bin.000003 | 458 | Intvar | 195 | 486 | INSERT_ID=1 |
| mysql-bin.000003 | 486 | Query | 195 | 615 | use `hadoop`; insert into user(username,password)values(1,1),(2,2),(3,3),(4,4) |
| mysql-bin.000003 | 615 | Query | 195 | 713 | use `hadoop`; ALTER TABLE `user` RENAME `user2` |
| mysql-bin.000003 | 713 | Query | 195 | 904 | use `hadoop`; create table user(
id int auto_increment primary key,
username char(30),
password char(32)
)engine=myisam default charset=utf8 |
| mysql-bin.000003 | 904 | Intvar | 195 | 932 | INSERT_ID=1 |
| mysql-bin.000003 | 932 | Query | 195 | 1061 | use `hadoop`; insert into user(username,password)values(1,1),(2,2),(3,3),(4,4) |
| mysql-bin.000003 | 1061 | Intvar | 195 | 1089 | INSERT_ID=5 |
| mysql-bin.000003 | 1089 | Query | 195 | 1206 | use `hadoop`; insert into user(username,password)values(5,5),(6,6) |
| mysql-bin.000003 | 1206 | Query | 195 | 1306 | use `hadoop`; delete from user where id=5 or id=6 |
+------------------+------+-------------+-----------+-------------+----------------------------------------------------------------------------------------------------------------------------------------------+
13 rows in set (0.00 sec)
#查看mysql-bin.000003日志内容
[root@hd3 ~]# show binlog events in 'mysql-bin.000003';
#根据binlog位置恢复 1089-1206是执行删除语句之前的sql起始和结束位置
[root@hd3 ~]# mysqlbinlog --no-defaults --start-position=1089 --stop-position=1206 '/var/lib/mysql/mysql-bin.000003' | mysql -uroot -p
#进入数据库验证是否恢复过来
mysql> select * from user;
+----+----------+----------+
| id | username | password |
+----+----------+----------+
| 1 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 3 | 3 |
| 4 | 4 | 4 |
| 8 | 6 | 6 |
| 7 | 5 | 5 |
+----+----------+----------+
6 rows in set (0.01 sec)还可以根据时间节点恢复
[root@hd3 ~]# mysqlbinlog --no-defaults --start-datetime="2015-11-01 13:18:54" --stop-datetime="2015-12-01 13:21:53" '/var/lib/mysql/mysql-bin.000003' | mysql -uroot -p如果需要指定数据库操作就加上--database=hadoop