scp huc_wifi_list#P#p. xx@172.16.32.70:/home/xx

alter table aaa discard tablespace;

alter table aaa import tablespace;

导入时注意文件权限为mysql:mysql

本实验在一台server上启动了2个mysql实例端口分别是3307 3308，目的是将3307的表aaa迁移到3308中去，并打开3308的slave

1.在3308上

mysql> drop table aaa;   干表
Query OK, 0 rows affected (0.01 sec)

mysql> CREATE TABLE `aaa` (
    ->   `id` int(2) DEFAULT NULL
    -> ) ENGINE=InnoDB DEFAULT CHARSET=utf8;   创建和3307上结构一样的空表
Query OK, 0 rows affected (0.00 sec)

在操作系统层面看下数据文件

[root@canal3 leochentest]# ll
total 112
-rw-rw---- 1 mysql mysql  8556 Feb 23 11:50 aaa.frm
-rw-rw---- 1 mysql mysql 98304 Feb 23 11:50 aaa.ibd
-rw-rw---- 1 mysql mysql    61 Feb  8 14:17 db.opt

mysql> alter table aaa discard tablespace;     干掉ibd数据文件
Query OK, 0 rows affected (0.00 sec)


[root@canal3 leochentest]# ll
total 16
-rw-rw---- 1 mysql mysql 8556 Feb 23 11:50 aaa.frm
-rw-rw---- 1 mysql mysql   61 Feb  8 14:17 db.opt

2 在3307上

mysql> use leochentest;
Database changed
mysql>
mysql>
mysql>
mysql> flush tables aaa for export;      锁表，并产生一个tablename.cfg的文件
Query OK, 0 rows affected (0.00 sec)

3. 在3307上将数据aaa.cfg和aaa.ibd文件拷贝到3308的对应目录下

[root@canal3 leochentest]# cp aaa.{cfg,ibd} /data/mysql/3308/data/leochentest

3307上解锁表

mysql> unlock tables;
Query OK, 0 rows affected (0.00 sec)

4.3308上执行导入表空间的文件，并打开slave

mysql> Alter table aaa import tablespace;
Query OK, 0 rows affected (0.01 sec)

mysql> select * from aaa;
+------+
| id   |
+------+
|    1 |
+------+
1 row in set (0.00 sec)

mysql> start slave ;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 10.40.20.44
                  Master_User: repl
                  Master_Port: 3307
                Connect_Retry: 60
              Master_Log_File: canal3-bin.000002
          Read_Master_Log_Pos: 19705
               Relay_Log_File: canal3-relay-bin.000010
                Relay_Log_Pos: 284
        Relay_Master_Log_File: canal3-bin.000002
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB:
          Replicate_Ignore_DB:
           Replicate_Do_Table:
       Replicate_Ignore_Table:
      Replicate_Wild_Do_Table:
  Replicate_Wild_Ignore_Table:
                   Last_Errno: 0
                   Last_Error:
                 Skip_Counter: 0
          Exec_Master_Log_Pos: 19705
              Relay_Log_Space: 622
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos: 0
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error:
               Last_SQL_Errno: 0
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id: 3307
                  Master_UUID: bbbe1742-0a4b-11e8-b0c0-00000a28142c
             Master_Info_File: /data/mysql/3308/data/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
           Master_Retry_Count: 86400
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set:
            Executed_Gtid_Set:
                Auto_Position: 0
1 row in set (0.00 sec)

ERROR:
No query specified

CREATE TABLE `test2` (
  `id` int(11) DEFAULT NULL,
  `name` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci ROW_FORMAT=COMPACT;

CREATE TABLE `test2` (
  `id` int(11) DEFAULT NULL,
  `name` varchar(255) COLLATE utf8mb4_unicode_ci DEFAULT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci ROW_FORMAT=COMPACT;

ALTER TABLE `test2` ROW_FORMAT=COMPACT;

ALTER TABLE `test2` ROW_FORMAT=DYNAMIC;

【转载】