Scenes
mysql in standby mode, the master node when the master-hook, after the re-pull, from the slave node was found not normal master-slave synchronization (Slave_IO_Running: No), since the synchronous position is inconsistent, it is necessary to update the offset from the position.
Operation Record
从节点同步状态
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 10.XX.XXX.80
Master_User: prd
Master_Port: 6666
Connect_Retry: 60
Master_Log_File: mysql-bin.000008
Read_Master_Log_Pos: 394862375
Relay_Log_File: mysqld-relay-bin.000009
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000008
Slave_IO_Running: No 主从不同步
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB: information_schema
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: 394862375
Relay_Log_Space: 120
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1236
Last_IO_Error: Got fatal error 1236 from master when reading data from binary log: 'Client requested master to start replication from position > file size; the first event 'mysql-bin.000008' at 394862375, the last event read from './mysql-bin.000008' at 4, the last byte read from './mysql-bin.000008' at 4.' 失败原因：同步的position出现不一致
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 11480
Master_UUID: 752385a1-c7af-11e9-b8f8-0050568d3919
Master_Info_File: /home/XXXX/prd/mysql-5.6.45-linux-glibc2.12-x86_64/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: 200309 10:25:12
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)
MySQL> STOP Slave; # synchronization is not normal, stop synchronization
Query OK, 0 rows affected (0.00 sec)
mysql>
主节点状态
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000011 | 52732 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql> flush logs;
Query OK, 0 rows affected (0.03 sec)
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000014 | 120 | | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysql>
slave节点
mysql> CHANGE MASTER TO MASTER_LOG_FILE='mysql-bin.000014',MASTER_LOG_POS=120; #修改偏移量，与主保持一致
Query OK, 0 rows affected (0.02 sec)
mysql> start slave;
Query OK, 0 rows affected (0.02 sec)
mysql> show slave status \G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 10.XX.XXX.80
Master_User: prd
Master_Port: 6666
Connect_Retry: 60
Master_Log_File: mysql-bin.000014
Read_Master_Log_Pos: 5597
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 5760
Relay_Master_Log_File: mysql-bin.000014
Slave_IO_Running: Yes
Slave_SQL_Running: Yes 正常同步，问题解决
Replicate_Do_DB:
Replicate_Ignore_DB: information_schema
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: 5597
Relay_Log_Space: 5934
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: 11480
Master_UUID: 752385a1-c7af-11e9-b8f8-0050568d3919
Master_Info_File: /home/XXXX/prd/mysql-5.6.45-linux-glibc2.12-x86_64/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)
mysql>
