mysql主从同步如何跳过错误
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2022-03-07 12:05:36
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mysql主从同步跳过错误的方法:1、跳过指定数量的事务,代码为【mysql>SET GLOBAL SQL_SLAVE_SKIP..】;2、修改mysql的配置文件,通过【slave_skip_errors】参数来跳所有错误。
本教程操作环境:windows7系统、mysql 5.6.14版,DELL G3电脑,该方法适用于所有品牌电脑。
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mysql主从同步跳过错误的方法:
1、跳过指定数量的事务:
mysql>slave stop; mysql>SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 1 #跳过一个事务 mysql>slave start
2、修改mysql的配置文件,通过slave_skip_errors
参数来跳所有错误或指定类型的错误
vi /etc/my.cnf [mysqld] #slave-skip-errors=1062,1053,1146 #跳过指定error no类型的错误 #slave-skip-errors=all #跳过所有错误
例:下面模拟一个错误场景
环境(一个已经配置好的主从复制环境)
master数据库IP:192.168.247.128
slave数据库IP:192.168.247.130
mysql版本:5.6.14
binlog-do-db = mydb
在master上执行以下语句:
mysql>use mysql; mysql>create table t1 (id int); mysql>use mydb; mysql>insert into mysql.t1 select 1;
在slave上查看复制状态
mysql> show slave status\G *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.247.128 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000017 Read_Master_Log_Pos: 2341 Relay_Log_File: DBtest1-relay-bin.000011 Relay_Log_Pos: 494 Relay_Master_Log_File: mysql-bin.000017 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 'Table 'mysql.t1' doesn't exist' on query. Default database: 'mydb'. Query: 'insert into mysql.t1 select 1' Skip_Counter: 0 Exec_Master_Log_Pos: 1919 Relay_Log_Space: 1254 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: 1146 Last_SQL_Error: Error 'Table 'mysql.t1' doesn't exist' on query. Default database: 'mydb'. Query: 'insert into mysql.t1 select 1' Replicate_Ignore_Server_Ids: Master_Server_Id: 1 Master_UUID: f0f7faf6-51a8-11e3-9759-000c29eed3ea Master_Info_File: /var/lib/mysql/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: 131210 21:37:19 Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 1 row in set (0.00 sec)
由结果可以看到,Read_Master_Log_Pos: 2341,Exec_Master_Log_Pos: 1919
时出错了Last_SQL_Error: Error 'Table 'mysql.t1' doesn't exist' on query
.
因为只对mydb记录了binlog,当在mydb库操作其它数据库的表,但该表在slave上又不存在时就出错了。
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