一、主从同步报错
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.12.128
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 471
Relay_Log_File: node02-relay-bin.000005
Relay_Log_Pos: 411
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 1032
Last_Error: Could not execute Delete_rows event on table test.test; Can't find record in 'test', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000003, end_log_pos 440
Skip_Counter: 0
Exec_Master_Log_Pos: 196
Relay_Log_Space: 936
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: 0
Last_IO_Error:
Last_SQL_Errno: 1032
Last_SQL_Error: Could not execute Delete_rows event on table test.test; Can't find record in 'test', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000003, end_log_pos 440
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 201aff26-1857-11eb-adaf-00505625b4dc
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp: 201104 19:05:32
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 201aff26-1857-11eb-adaf-00505625b4dc:10-11
Executed_Gtid_Set: 201aff26-1857-11eb-adaf-00505625b4dc:1-10,
9c6c32db-187e-11eb-846e-005056229b2b:1-141
Auto_Position: 1
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 (0.01 sec)
原因：主库要删除的数据在从库对应的表上找不到。
解决步骤：
--- 通过 Last_SQL_Errno 报错编号查询具体的报错事务
mysql> select * from performance_schema.replication_applier_status_by_worker where LAST_ERROR_NUMBER=1032\G;
*************************** 1. row ***************************
CHANNEL_NAME:
WORKER_ID: 0
THREAD_ID: NULL
SERVICE_STATE: OFF
LAST_ERROR_NUMBER: 1032
LAST_ERROR_MESSAGE: Could not execute Delete_rows event on table test.test; Can't find record in 'test', Error_code: 1032; handler error HA_ERR_KEY_NOT_FOUND; the event's master log mysql-bin.000003, end_log_pos 440
LAST_ERROR_TIMESTAMP: 2020-11-04 19:05:32.900750
LAST_APPLIED_TRANSACTION:
LAST_APPLIED_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_APPLIED_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_APPLIED_TRANSACTION_START_APPLY_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_APPLIED_TRANSACTION_END_APPLY_TIMESTAMP: 0000-00-00 00:00:00.000000
APPLYING_TRANSACTION: 201aff26-1857-11eb-adaf-00505625b4dc:11
APPLYING_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 2020-11-04 19:05:33.232725
APPLYING_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 2020-11-04 19:05:33.232725
APPLYING_TRANSACTION_START_APPLY_TIMESTAMP: 2020-11-04 19:05:32.898866
LAST_APPLIED_TRANSACTION_RETRIES_COUNT: 0
LAST_APPLIED_TRANSACTION_LAST_TRANSIENT_ERROR_NUMBER: 0
LAST_APPLIED_TRANSACTION_LAST_TRANSIENT_ERROR_MESSAGE:
LAST_APPLIED_TRANSACTION_LAST_TRANSIENT_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
APPLYING_TRANSACTION_RETRIES_COUNT: 0
APPLYING_TRANSACTION_LAST_TRANSIENT_ERROR_NUMBER: 0
APPLYING_TRANSACTION_LAST_TRANSIENT_ERROR_MESSAGE:
APPLYING_TRANSACTION_LAST_TRANSIENT_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
1 row in set (0.01 sec)
ERROR:
No query specified
--- 停止主从复制
mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)
--- 跳过查找到报错的事务（ APPLYING_TRANSACTION的值）
mysql> set @@session.gtid_next='201aff26-1857-11eb-adaf-00505625b4dc:11';
Query OK, 0 rows affected (0.00 sec)
--- 提交一个空的事务，因为设置gtid_next后，gtid的生命周期开始了，必须通过显性的提交一个事务来结束；
mysql> begin;
Query OK, 0 rows affected (0.00 sec)
mysql> commit;
Query OK, 0 rows affected (0.00 sec)
--- 改回自动模式；
mysql> set @@session.gtid_next=automatic;
Query OK, 0 rows affected (0.00 sec)
--- 重启主从复制
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.12.128
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 471
Relay_Log_File: node02-relay-bin.000006
Relay_Log_Pos: 458
Relay_Master_Log_File: mysql-bin.000003
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: 471
Relay_Log_Space: 1198
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: 201aff26-1857-11eb-adaf-00505625b4dc
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: 201aff26-1857-11eb-adaf-00505625b4dc:10-11
Executed_Gtid_Set: 201aff26-1857-11eb-adaf-00505625b4dc:1-11,
9c6c32db-187e-11eb-846e-005056229b2b:1-141
Auto_Position: 1
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 (0.01 sec)
二、主从同步报错
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.12.128
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 746
Relay_Log_File: node02-relay-bin.000006
Relay_Log_Pos: 458
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: No
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 1062
Last_Error: Could not execute Write_rows event on table test.test; Duplicate entry '5' for key 'test.PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000003, end_log_pos 715
Skip_Counter: 0
Exec_Master_Log_Pos: 471
Relay_Log_Space: 1473
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: 0
Last_IO_Error:
Last_SQL_Errno: 1062
Last_SQL_Error: Could not execute Write_rows event on table test.test; Duplicate entry '5' for key 'test.PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000003, end_log_pos 715
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 201aff26-1857-11eb-adaf-00505625b4dc
Master_Info_File: mysql.slave_master_info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State:
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp: 201104 19:21:46
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 201aff26-1857-11eb-adaf-00505625b4dc:10-12
Executed_Gtid_Set: 201aff26-1857-11eb-adaf-00505625b4dc:1-11,
9c6c32db-187e-11eb-846e-005056229b2b:1-142
Auto_Position: 1
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 (0.01 sec)
原因：主库在有唯一主键的表中插入的数据，在从库中已经存在，从库中出现主键冲突。
解决方法：
mysql> stop slave;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> select * from performance_schema.replication_applier_status_by_worker where LAST_ERROR_NUMBER=1062\G;
*************************** 1. row ***************************
CHANNEL_NAME:
WORKER_ID: 0
THREAD_ID: NULL
SERVICE_STATE: OFF
LAST_ERROR_NUMBER: 1062
LAST_ERROR_MESSAGE: Could not execute Write_rows event on table test.test; Duplicate entry '5' for key 'test.PRIMARY', Error_code: 1062; handler error HA_ERR_FOUND_DUPP_KEY; the event's master log mysql-bin.000003, end_log_pos 715
LAST_ERROR_TIMESTAMP: 2020-11-04 19:21:46.399334
LAST_APPLIED_TRANSACTION:
LAST_APPLIED_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_APPLIED_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_APPLIED_TRANSACTION_START_APPLY_TIMESTAMP: 0000-00-00 00:00:00.000000
LAST_APPLIED_TRANSACTION_END_APPLY_TIMESTAMP: 0000-00-00 00:00:00.000000
APPLYING_TRANSACTION: 201aff26-1857-11eb-adaf-00505625b4dc:12
APPLYING_TRANSACTION_ORIGINAL_COMMIT_TIMESTAMP: 2020-11-04 19:21:46.733146
APPLYING_TRANSACTION_IMMEDIATE_COMMIT_TIMESTAMP: 2020-11-04 19:21:46.733146
APPLYING_TRANSACTION_START_APPLY_TIMESTAMP: 2020-11-04 19:21:46.398725
LAST_APPLIED_TRANSACTION_RETRIES_COUNT: 0
LAST_APPLIED_TRANSACTION_LAST_TRANSIENT_ERROR_NUMBER: 0
LAST_APPLIED_TRANSACTION_LAST_TRANSIENT_ERROR_MESSAGE:
LAST_APPLIED_TRANSACTION_LAST_TRANSIENT_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
APPLYING_TRANSACTION_RETRIES_COUNT: 0
APPLYING_TRANSACTION_LAST_TRANSIENT_ERROR_NUMBER: 0
APPLYING_TRANSACTION_LAST_TRANSIENT_ERROR_MESSAGE:
APPLYING_TRANSACTION_LAST_TRANSIENT_ERROR_TIMESTAMP: 0000-00-00 00:00:00.000000
1 row in set (0.01 sec)
ERROR:
No query specified
mysql> set @@session.gtid_next='201aff26-1857-11eb-adaf-00505625b4dc:12';
Query OK, 0 rows affected (0.00 sec)
mysql> begin;
Query OK, 0 rows affected (0.00 sec)
mysql> commit;
Query OK, 0 rows affected (0.00 sec)
mysql> set @@session.gtid_next=automatic;
Query OK, 0 rows affected (0.00 sec)
mysql> start slave;
Query OK, 0 rows affected, 1 warning (0.01 sec)
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.12.128
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 746
Relay_Log_File: node02-relay-bin.000007
Relay_Log_Pos: 458
Relay_Master_Log_File: mysql-bin.000003
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: 746
Relay_Log_Space: 1245
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: 201aff26-1857-11eb-adaf-00505625b4dc
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: 201aff26-1857-11eb-adaf-00505625b4dc:10-12
Executed_Gtid_Set: 201aff26-1857-11eb-adaf-00505625b4dc:1-12,
9c6c32db-187e-11eb-846e-005056229b2b:1-142
Auto_Position: 1
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 (0.01 sec)
