MySQL主从复制遇到错误的处理办法

摘要：在主从复制的时候经常遇到错误而导致复制中断，这个时候就需要人工干涉，来跳过这个错误，才能使端的复制，得以继续进行跳过错误的方法例如错误发生时的状态使用上面的方法使的端复制恢复正常到此，的主从复制恢复正常。。。

MySQL在主从复制的时候经常遇到错误而导致Slave复制中断，这个时候就需要人工干涉，来跳过这个错误，才能使Slave端的复制，得以继续进行；

跳过错误的方法：

MariaDB [(none)]> STOP SLAVE;
MariaDB [(none)]> SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE "SQL_SLAVE_SKIP_COUNTER";

+------------------------+-------+
| Variable_name          | Value |
+------------------------+-------+
| sql_slave_skip_counter | 1     |
+------------------------+-------+

MariaDB [(none)]> START SLAVE;

例如：
Slave错误发生时的状态:

MariaDB [(none)]> SHOW SLAVE STATUSG
*************************** 1. row ***************************
           Slave_IO_State: Waiting for master to send event
              Master_Host: 192.168.180.100
              Master_User: repluser
              Master_Port: 3306
            Connect_Retry: 60
          Master_Log_File: mysql-bin.000004
      Read_Master_Log_Pos: 658
           Relay_Log_File: relay-bin.000002
            Relay_Log_Pos: 601
    Relay_Master_Log_File: mysql-bin.000001
         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: 1008
               Last_Error: Error "Can"t drop database "test"; database doesn"t exist" on query. Default database: "test". Query: "drop database test"
             Skip_Counter: 0
      Exec_Master_Log_Pos: 313
          Relay_Log_Space: 4079
          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: 1008
           Last_SQL_Error: Error "Can"t drop database "test"; database doesn"t exist" on query. Default database: "test". Query: "drop database test"
  Replicate_Ignore_Server_Ids: 
         Master_Server_Id: 1
           Master_SSL_Crl: 
       Master_SSL_Crlpath: 
               Using_Gtid: No
              Gtid_IO_Pos: 
  Replicate_Do_Domain_Ids: 
  Replicate_Ignore_Domain_Ids: 
            Parallel_Mode: conservative
            

使用上面的方法使MySQL的Slave端复制恢复正常：

MariaDB [(none)]> STOP SLAVE;
MariaDB [(none)]> SET GLOBAL  SQL_SLAVE_SKIP_COUNTER=1;
MariaDB [(none)]> SHOW GLOBAL VARIABLES LIKE "SQL_SLAVE_SKIP_COUNTER";
+------------------------+-------+
| Variable_name          | Value |
+------------------------+-------+
| sql_slave_skip_counter | 1     |
+------------------------+-------+
MariaDB [(none)]> START SLAVE;
MariaDB [(none)]> SHOW SLAVE STATUSG
*************************** 1. row ***************************
           Slave_IO_State: Waiting for master to send event
              Master_Host: 192.168.180.100
              Master_User: repluser
              Master_Port: 3306
            Connect_Retry: 60
          Master_Log_File: mysql-bin.000004
      Read_Master_Log_Pos: 658
           Relay_Log_File: relay-bin.000006
            Relay_Log_Pos: 537
    Relay_Master_Log_File: mysql-bin.000004
         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: 658
          Relay_Log_Space: 1526
          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_SSL_Crl: 
       Master_SSL_Crlpath: 
               Using_Gtid: No
              Gtid_IO_Pos: 
  Replicate_Do_Domain_Ids: 
  Replicate_Ignore_Domain_Ids: 
            Parallel_Mode: conservative
            

到此，MySQL的主从复制恢复正常。。。大功告成