标签：logbin mysql8 恢复 31 sql 误删 teachers mysql 全备
[root@mysql8-31 mysql]# mysqldump --help
[root@mysql8-31 mysql]# mysqldump -uroot -A --source-data=2 > /backup/all.sql #默认就是1，主从
CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000008', MASTER_LOG_POS=156; #从这个点之后找数据
mysql> select * from teachers;
+-----+---------------+-----+--------+
| TID | Name | Age | Gender |
+-----+---------------+-----+--------+
| 1 | Song Jiang | 45 | M |
| 2 | Zhang Sanfeng | 94 | M |
| 3 | Miejue Shitai | 77 | F |
| 4 | Lin Chaoying | 93 | F |
+-----+---------------+-----+--------+
4 rows in set (0.00 sec)
mysql> insert teachers (name,age)values('a','22');
Query OK, 1 row affected (0.01 sec)
mysql> insert teachers (name,age)values('b','23');
Query OK, 1 row affected (0.00 sec)
#误删除
mysql> drop table teachers;
再新增数据
mysql> insert students (name,age)values('c','22');
Query OK, 1 row affected (0.00 sec)
mysql> insert students (name,age)values('d','22');
Query OK, 1 row affected (0.01 sec)
mysql> select * from students;
| 28 | c | 22 | F | NULL | NULL |
| 29 | d | 22 | F | NULL | NULL |
+-------+---------------+-----+--------+---------+-----------+
29 rows in set (0.01 sec)
暂停访问
[root@mysql8-31 backup]# head all.sql -n30
-- CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000008', MASTER_LOG_POS=156;
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000008 | 1568 | | | |
+------------------+----------+--------------+------------------+-------------------+
生成全备之后二进制文件
[root@mysql8-31 logbin]# mysqlbinlog --start-position=156 /data/mysql/logbin/mysql-bin.000008 > /backup/logbin.sql
[root@mysql8-31 backup]# grep -in drop logbin.sql
90:DROP TABLE `teachers` /* generated by server */
vim logbin.sql +90
[root@mysql8-31 backup]# sed -n '/^DROP TABLE `teachers`'/p logbin.sql
DROP TABLE `teachers` /* generated by server */
[root@mysql8-31 backup]# sed -i '/^DROP TABLE `teachers`/d' logbin.sql
还原验证
ERROR 1790 (HY000): @@SESSION.GTID_NEXT cannot be changed by a client that owns a GTID. The client owns ANONYMOUS. Ownership is released on COMMIT or ROLLBACK.
# at 827
#220517 22:11:46 server id 8 end_log_pos 966 CRC32 0x750c2e07 Query thread_id=12 exec_time=0 error_code=0 Xid = 1465
use `hellodb`/*!*/;
SET TIMESTAMP=1652796706/*!*/;
DROP **
/*!*/;
全删 90行 drop 命令及往上
ERROR 1790 (HY000) at line 94: @@SESSION.GTID_NEXT cannot be changed by a client that owns a GTID. The client owns ANONYMOUS. Ownership is released on COMMIT or ROLLBACK.
mysql> select @@log_bin;
+-----------+
| @@log_bin |
+-----------+
| 1 |
+-----------+
临时关闭
mysql < all.sql
mysql < logbin.sql
标签：logbin,mysql8,恢复,31,sql,误删,teachers,mysql,全备 来源： https://www.cnblogs.com/gxc888/p/16282774.html
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