調査
On Replica
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 10.146.0.18
Master_User: rpl_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000091
Read_Master_Log_Pos: 1372
Relay_Log_File: mysql-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000091
On Read
mysql> show master status;
+---------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+---------------+----------+--------------+------------------+-------------------+
| binlog.000039 | 1724 | | | |
+---------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
対応
ログファイルやポジションがリードとレプリカでずれてしまっているので修正する。
On Replica
> stop slave;
Query OK, 0 rows affected (0.02 sec)
> CHANGE MASTER TO MASTER_HOST='10.146.0.18', MASTER_LOG_FILE='binlog.000039', MASTER_LOG_POS=1724;
Query OK, 0 rows affected (0.05 sec)
> start slave;
Query OK, 0 rows affected (0.00 sec)
> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.146.0.18
Master_User: rpl_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: binlog.000039
Read_Master_Log_Pos: 1724
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 321
Relay_Master_Log_File: binlog.000039
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: 1724
Relay_Log_Space: 530
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: 1
Master_UUID: bad88ce0-20c2-11eb-959f-42010a920012
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
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
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
Master_public_key_path:
Get_master_public_key: 0
Network_Namespace:
1 row in set, 1 warning (0.00 sec)
ON Read
リードからもSlaveが認識てきていることを確認。
mysql> show slave hosts;
+-----------+------+------+-----------+--------------------------------------+
| Server_id | Host | Port | Master_id | Slave_UUID |
+-----------+------+------+-----------+--------------------------------------+
| 2 | | 3306 | 1 | 74XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX14 |
+-----------+------+------+-----------+--------------------------------------+
1 row in set, 1 warning (0.00 sec)