1062 Error 'Duplicate entry '1438019' for key 'PRIMARY'' on query

mysql主從庫同步錯誤：1062 Error 'Duplicate entry '1438019' for key 'PRIMARY'' on query
mysql主從庫在同步時會發生1062 Last_SQL_Error: Error ‘Duplicate entry ‘的問題：

顯然這個問題是因為插入重復主鍵導致從庫不工作了，錯誤消息如下

mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.10.100
Master_User: slave_user
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000773
Read_Master_Log_Pos: 63325
Relay_Log_File: server122-relay-bin.000002
Relay_Log_Pos: 165661
Relay_Master_Log_File: mysql-bin.000771
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: Error 'Duplicate entry '1438019' for key 'PRIMARY'' on query. Default database: 'otrs'. Query: 'INSERT INTO ticket (tn, title, create_time_unix, queue_id, ticket_lock_id, user_id, group_id, ticket_priority_id, ticket_state_id, ticket_answered, escalation_start_time, timeout, valid_id, create_time, create_by, change_time, change_by) VALUES ('2012061310001851', 'Your order ORD201205A000016 was bounced back', 1339585744, 44, 1, 43, 1, 3, 4, 0, 1339585744, 0, 1, current_timestamp, 43, current_timestamp, 43)'
Skip_Counter: 0
Exec_Master_Log_Pos: 41969067
Relay_Log_Space: 625695
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: Error 'Duplicate entry '1438019' for key 'PRIMARY'' on query. Default database: 'otrs'. Query: 'INSERT INTO ticket (tn, title, create_time_unix, queue_id, ticket_lock_id, user_id, group_id, ticket_priority_id, ticket_state_id, ticket_answered, escalation_start_time, timeout, valid_id, create_time, create_by, change_time, change_by) VALUES ('2012061310001851', 'Your order ORD201205A000016 was bounced back', 1339585744, 44, 1, 43, 1, 3, 4, 0, 1339585744, 0, 1, current_timestamp, 43, current_timestamp, 43)'
1 row in set (0.00 sec)

ERROR:
No query specified

我遇到這個問題的時候,首先查看數據庫中的唯一主鍵id是否設置為自增,如果不是自增,就查看這個主鍵是否有設置唯一值,

這里都沒有問題的話,可以參考下面的解決辦法:

mysql> slave stop;
mysql> set GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
mysql> slave start;

上面的方法可以解決問題，還有一種解決問題的辦法是通過修改mysql的配置文件，讓從庫的同步線程忽略這個錯誤，方法：

修改mysql配置文件 /etc/my.cnf 在 [mysqld]下加一行 slave_skip_errors = 1062 ,保存.重啟mysql. mysql slave可以正常同步了.