MySQL GTID复制错误处理之跳过错误

某Slave报错信息：

mysql> show slave status\G;

mysql> show slave status\G;
*************************** . row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.206.140
                  Master_User: u_repl
                  Master_Port:
                Connect_Retry:
              Master_Log_File: mysql-bin.
          Read_Master_Log_Pos:
               Relay_Log_File: localhost-relay-bin.
                Relay_Log_Pos:
        Relay_Master_Log_File: mysql-bin.
             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:
                   Last_Error: Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker  failed executing transaction '9e2c7c0f-0908-11e7-8230-000c29ab7544:1' at master log mysql-bin., end_log_pos . 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:
          Exec_Master_Log_Pos:
              Relay_Log_Space:
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos:
           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:
                Last_IO_Error:
               Last_SQL_Errno:
               Last_SQL_Error: Coordinator stopped because there were error(s) in the worker(s). The most recent failure being: Worker  failed executing transaction '9e2c7c0f-0908-11e7-8230-000c29ab7544:1' at master log mysql-bin., end_log_pos . 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:
                  Master_UUID: 9e2c7c0f--11e7--000c29ab7544
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay:
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State:
           Master_Retry_Count:
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:  ::
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 9e2c7c0f--11e7--000c29ab7544:-
            Executed_Gtid_Set: 347cbac6--11e7-b957-000c2981a46e:,
c59a2526-08fd-11e7-a5c7-000c296f2953:-
                Auto_Position:
         Replicate_Rewrite_DB:
                 Channel_Name:
           Master_TLS_Version:
 row in set (0.00 sec)

ERROR:
No query specified

GTID的复制对于错误信息的可读性不是很好，但可以通过错误代码（1007）从监控表replication_applier_status_by_worker查看：

mysql> select * from performance_schema.replication_applier_status_by_worker where LAST_ERROR_NUMBER=\G

mysql> select * from performance_schema.replication_applier_status_by_worker where LAST_ERROR_NUMBER=\G
*************************** . row ***************************
         CHANNEL_NAME:
            WORKER_ID:
            THREAD_ID: NULL
        SERVICE_STATE: OFF
LAST_SEEN_TRANSACTION: 9e2c7c0f--11e7--000c29ab7544:
    LAST_ERROR_NUMBER:
   LAST_ERROR_MESSAGE: Worker  failed executing transaction '9e2c7c0f-0908-11e7-8230-000c29ab7544:1' at master log mysql-bin., end_log_pos ; Error 'Can't create database 'mydb'; database exists' on query. Default database: 'mydb'. Query: 'create database mydb'
 LAST_ERROR_TIMESTAMP: -- ::
 row in set (0.00 sec)

使用GTID跳过错误的方法：找到错误的GTID跳过（通过Exec_Master_Log_Pos去binlog里找GTID，或则通过上面监控表replication_applier_status_by_worker找到GTID，也可以通过Executed_Gtid_Set算出GTID），这里使用监控表来找到错误的GTID。找到GTID之后，跳过错误的步骤：

mysql> stop slave; #停止同步
Query OK,  rows affected (0.02 sec)

mysql> set @@session.gtid_next='9e2c7c0f-0908-11e7-8230-000c29ab7544:1';  #跳过错误的GTID
Query OK,  rows affected (0.00 sec)

mysql> begin; #提交一个空事务，因为设置gtid_next后，gtid的生命周期就开始了，必须通过显性的提交一个事务来结束，否则报错：ERROR  (HY000): @@SESSION.GTID_NEXT cannot be changed by a client that owns a
Query OK,  rows affected (0.00 sec)

mysql> commit;
Query OK,  rows affected (0.01 sec)

mysql> set @@session.gtid_next=automatic; #设置回自动模式
Query OK,  rows affected (0.00 sec)

mysql> start slave;
Query OK,  rows affected (0.02 sec)

再次确认slave同步状况

mysql> show slave status\G;

mysql> show slave status\G;
*************************** . row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.206.140
                  Master_User: u_repl
                  Master_Port:
                Connect_Retry:
              Master_Log_File: mysql-bin.
          Read_Master_Log_Pos:
               Relay_Log_File: localhost-relay-bin.
                Relay_Log_Pos:
        Relay_Master_Log_File: mysql-bin.
             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:
                   Last_Error:
                 Skip_Counter:
          Exec_Master_Log_Pos:
              Relay_Log_Space:
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos:
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master:
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno:
                Last_IO_Error:
               Last_SQL_Errno:
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id:
                  Master_UUID: 9e2c7c0f--11e7--000c29ab7544
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay:
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
           Master_Retry_Count:
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 9e2c7c0f--11e7--000c29ab7544:-
            Executed_Gtid_Set: 347cbac6--11e7-b957-000c2981a46e:,
9e2c7c0f--11e7--000c29ab7544:-,
c59a2526-08fd-11e7-a5c7-000c296f2953:-
                Auto_Position:
         Replicate_Rewrite_DB:
                 Channel_Name:
           Master_TLS_Version:
 row in set (0.00 sec)

ERROR:
No query specified

打完收工

本文地址：http://www.cnblogs.com/ajiangg/p/6558714.html