錯誤一
ERROR] Slave I/O: error connecting to master 'replication@VMS00782:3306' - retry-time: 60 retries: 2, Error_code: 1045
錯誤原因：從庫用來連接主庫的用戶權限或者密碼不對
解決方法：首先在主庫上檢查用來主從復制的用戶權限，如果沒有問題在檢查從庫使用的密碼是否正確。
錯誤二
140331 10:08:18 [ERROR] Error reading master configuration 140331 10:08:18 [ERROR] Failed to initialize the master info structure 140331 10:08:18 [Note] Event Scheduler: Loaded 0 events
錯誤原因：這個可能是從庫的master.info文件有損壞。
解決方法：reset slave
錯誤三
Error 'Duplicate entry '1' for key 1' on query. Default database: 'movivi1'. Query: 'INSERT INTO `v1vid0_user_samename` VALUES(null,1,'123','11','4545','123')'
錯誤原因：可能是從庫的約束比主庫更多寫造成的。
解決方法：
Mysql > stop slave; Mysql > set global sql_slave_skip_counter =1 ; Mysql > start slave;
錯誤四
Slave SQL: Error 'Table 'xxxx' doesn't exist' on query. Default database: 't591'. Query: 'INSERT INTO `xxxx`(type,post_id,browsenum) SELECT type,post_id,browsenum FROM xxxx WHERE hitdate='20090209'', Error_code: 1146
錯誤原因：slave上缺少錯誤中的表。
解決方法：在slave上添加上對應的表，然后start slave。
錯誤五
Error 'Unknown column 'qdir' in 'field list'' on query. Default database: 'club'. Query: 'insert into club.question_del (id, pid, ques_name, givepoint, title, subject, subject_pid, createtime, approve, did, status, intime, order_d, endtime,banzhu_uid,banzhu_uname,del_cause,qdir) select id, pid, ques_name, givepoint, title, subject, subject_pid, createtime, approve, did, status, intime, order_d, endtime,'1521859','admin0523','無意義回復',qdir from club.question where id=7330212' 1 row in set (0.00 sec)
錯誤原因：從庫上對應的表上缺少字段。
解決方法：根據主庫上表結構，在從庫對應表上添加缺少的字段，然后start slave。
錯誤六
mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.60.159 Master_User: backup Master_Port: 3311 Connect_Retry: 60 Master_Log_File: mysql-bin.000012 Read_Master_Log_Pos: 274863854 Relay_Log_File: mysql-relay-bin.000007 Relay_Log_Pos: 2160037 Relay_Master_Log_File: mysql-bin.000012 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: 1146 Last_Error: Error executing row event: 'Table 'panda.t' doesn't exist' Skip_Counter: 0 Exec_Master_Log_Pos: 2159824 Relay_Log_Space: 274866725
錯誤原因：主庫刪除的表在從庫中不存在，導致從庫在遇到刪除不存在表的錯誤時無法繼續同步。
解決方法：利用slave-skip-errors參數，跳過對於的1146錯誤（這個參數是一個只讀的，需要在配置文件中修改，並重啟從庫）
1、在my.cnf的[mysqld]下面添加slave_skip_errors=1146
2、重啟從庫 service mysql restart
3、在從庫上啟動同步
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: 192.168.60.159 Master_User: backup Master_Port: 3311 Connect_Retry: 60 Master_Log_File: mysql-bin.000012 Read_Master_Log_Pos: 274863854 Relay_Log_File: mysql-relay-bin.000007 Relay_Log_Pos: 137439021 Relay_Master_Log_File: mysql-bin.000012 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: 137438808 Relay_Log_Space: 274867275 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: 88484 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: 159 Master_UUID: ded30ff9-62b2-11e6-b0d0-f80f41fa11bf Master_Info_File: /usr/local/mysql-5.7.14-linux-glibc2.5-x86_64/data/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: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: 1 row in set (0.00 sec)
4、去掉my.cnf中的slave_skip_errors=1146
5、重啟從庫
6、啟動從庫復制
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原文：https://blog.csdn.net/gua___gua/article/details/52869614