首先查看从的状态
mysql> show slave status G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 10.120.141.228 Master_User: sys_repl Master_Port: 3306 Connect_Retry: 10 Master_Log_File: mysql-bin.000247 Read_Master_Log_Pos: 39320676 Relay_Log_File: mysqld-relay-bin.000064 Relay_Log_Pos: 213210879 Relay_Master_Log_File: mysql-bin.000242 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: 1197 Last_Error: Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker 1 failed executing transaction 'ANONYMOUS' at master log mysql-bin.000242, end_log_pos 347537149. See error log and/or performance_schema.replication_applier_status_by_worker table for more details about this failure or others, if any. Skip_Counter: 0 Exec_Master_Log_Pos: 213210706 Relay_Log_Space: 4892606739 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: 1197 Last_SQL_Error: Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker 1 failed executing transaction 'ANONYMOUS' at master log mysql-bin.000242, end_log_pos 347537149. See error log and/or performance_schema.replication_applier_status_by_worker table for more details about this failure or others, if any. Replicate_Ignore_Server_Ids: Master_Server_Id: 141228 Master_UUID: 3dda54fe-bac1-11e7-920c-0050569f4477 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: 181024 16:18:24 Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: cacca550-aa66-11e8-950f-525400b9c881:1-11, fcfab99d-a492-11e5-be37-0050569f3992:1 Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec)
提示已经很明显了，让查看performance_schema.replication_applier_status_by_worker这个表看详细的问题
mysql> select * from performance_schema.replication_applier_status_by_workerG *************************** 1. row *************************** CHANNEL_NAME: WORKER_ID: 1 THREAD_ID: NULL SERVICE_STATE: OFF LAST_SEEN_TRANSACTION: ANONYMOUS LAST_ERROR_NUMBER: 1197 LAST_ERROR_MESSAGE: Worker 1 failed executing transaction 'ANONYMOUS' at master log mysql-bin.000242, end_log_pos 347537149; Could not execute Delete_rows event on table pipeline.m_orderitem; Multi-statement transaction required more than 'max_binlog_cache_size' bytes of storage; increase this mysqld variable and try again, Error_code: 1197; handler error HA_ERR_RBR_LOGGING_FAILED; the event's master log mysql-bin.000242, end_log_pos 347537149 LAST_ERROR_TIMESTAMP: 2018-10-24 16:18:24
有些比较明显的问题系统会给出一些建议的解决方案，大多是跟着系统说得做就好了。
mysql> show variables like '%max_binlog_cache_size'; +-----------------------+-----------+ | Variable_name | Value | +-----------------------+-----------+ | max_binlog_cache_size | 134217728 | +-----------------------+-----------+ 1 row in set (0.00 sec) mysql> set global max_binlog_cache_size=10737418240; Query OK, 0 rows affected (0.00 sec) mysql> stop slave; Query OK, 0 rows affected (0.02 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: 10.120.141.228 Master_User: sys_repl Master_Port: 3306 Connect_Retry: 10 Master_Log_File: mysql-bin.000247 Read_Master_Log_Pos: 39371887 Relay_Log_File: mysqld-relay-bin.000064 Relay_Log_Pos: 213210879 Relay_Master_Log_File: mysql-bin.000242 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: 213210706 Relay_Log_Space: 4892658324 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: 1993751 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: 141228 Master_UUID: 3dda54fe-bac1-11e7-920c-0050569f4477 Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Reading event from the relay log 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: cacca550-aa66-11e8-950f-525400b9c881:1-11, fcfab99d-a492-11e5-be37-0050569f3992:1 Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec)
这样就OK了