mysql主从同步失败，原因是主跟从已经有相同的数据在里面了。

解决方法：在从库的/etc/my.cnf里添加如下代码

[mysqld]

slave-skip-errors = 1032,1062,1007,1050

案例一：

mysql> show slave status\G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 172.20.18.166

Master_User: rep

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: mysql-bin.000003

Read_Master_Log_Pos: 237

Relay_Log_File: abu-relay-bin.000002

Relay_Log_Pos: 253

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: 1007

                   Last_Error: Error 'Can't create database 'abu'; database exists' on query. Default database: 'abu'. Query: 'create database abu'

Skip_Counter: 0

Exec_Master_Log_Pos: 107

Relay_Log_Space: 1859

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: 1007

               Last_SQL_Error: Error 'Can't create database 'abu'; database exists' on query. Default database: 'abu'. Query: 'create database abu'

Replicate_Ignore_Server_Ids:

Master_Server_Id: 1

1 row in set (0.00 sec)

案例二：

mysql> show slave status\G

*************************** 1. row ***************************

Slave_IO_State: Waiting for master to send event

Master_Host: 172.20.18.166

Master_User: rep

Master_Port: 3306

Connect_Retry: 60

Master_Log_File: mysql-bin.000003

Read_Master_Log_Pos: 237

Relay_Log_File: abu-relay-bin.000002

Relay_Log_Pos: 253

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: 1007

Last_Error: Error 'Can't create database 'abu'; database exists' on query. Default database: 'abu'. Query: 'create database abu'

Skip_Counter: 0

Exec_Master_Log_Pos: 107

Relay_Log_Space: 1859

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: 1007

Last_SQL_Error: Error 'Can't create database 'abu'; database exists' on query. Default database: 'abu'. Query: 'create database abu'

Replicate_Ignore_Server_Ids:

Master_Server_Id: 1

1 row in set (0.00 sec)

解决方法：在从库的/etc/my.cnf里添加如下代码

[mysqld]

slave-skip-errors = 1032,1062,1007,1050