replicate-rewrite-db和Replicate_Wild_Do_Table如何实现表级别映射复制

这期内容当中小编将会给大家带来有关replicate-rewrite-db和Replicate_Wild_Do_Table如何实现表级别映射复制，文章内容丰富且以免费主机域名专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。将3306实例下sakila的两张表actor同步到5725实例下的ming数据库中。初始化数据mysqldump -uroot -poracle -q –single-transaction
-n -B sakila –tables actor –master-data=2 > sakila.sql注意添加-n，不生成创建database的语句。mysql> create database ming;Query OK, 1 row affected (0.00 sec)mysql> use mingDatabase changedmysql> source /root/sakila.sql修改从库参数文件，并重启从库添加：replicate-rewrite-db = sakila -> mingCHANGE MASTER TOMASTER_HOST=’192.168.61.2′,MASTER_USER=’repl’,MASTER_PASSWORD=’oracle’,MASTER_LOG_FILE=’mysql-bin.000013′,MASTER_LOG_POS=154;如果只添加replicate-rewrite-db这个参数，只是实现了数据库级别的复制，还不是表级别。这样会很容易复制其他操作到从库，导致sql thread报错。比如主库执行mysql> use sakilamysql> create table actor_bak like actor;Query OK, 0 rows affected (0.31 sec)mysql> insert into actor_bak select * from actor;Query OK, 200 rows affected (0.17 sec)Records: 200 Duplicates: 0 Warnings: 0mysql> update
tt.test01 set c2=10 where c1=9;Query OK, 1 row affected (0.12 sec)Rows matched: 1 Changed: 1 Warnings: 0有关actor_bak的动作会被传递到从库。但是从库没有tt数据库，那么就会sql thread进程就会报错。Last_SQL_Error: Error ‘Unknown database ‘tt” on query. Default database: ‘ming’. Query: ‘create table tt.t1 like actor_bak’所以完整的写法应该是；replicate-rewrite-db = sakila -> mingreplicate-wild-do-table=ming.actor主库执行mysql> use sakilamysql> insert into tt.t1 select * from actor_bak;Query OK, 200 rows affected (0.00 sec)Records: 200 Duplicates: 0 Warnings: 0从库不会再报错。添加如上参数后，可以在show slave status中看到。mysql [localhost] {msandbox} ((none)) > show slave statusG*************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.61.2 Master_User: repl Master_Port: 3306 Connect_Retry: 60 Master_Log_File: mysql-bin.000013 Read_Master_Log_Pos: 9815 Relay_Log_File: relay-bin.000004 Relay_Log_Pos: 4683 Relay_Master_Log_File: mysql-bin.000013 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table:
Replicate_Wild_Do_Table: ming.actor Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 9815 Relay_Log_Space: 4884 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: 0Master_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: 1051295 Master_UUID: 4c312339-ab38-11e9-86a8-000c29050245 Master_Info_File: /root/sandboxes/msb_5_7_25/data/master.info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates 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: (sakila,ming) Channel_Name: Master_TLS_Version:1 row in set (0.00 sec)在线修改参数前，需要先暂停SQL thread进程：mysql [localhost] {msandbox} ((none)) > stop slave sql_thread;Query OK, 0 rows affected (0.00 sec)mysql [localhost] {msandbox} ((none)) >
change replication filter replicate_rewrite_db=((sakila,ming));Query O免费主机域名K, 0 rows affected (0.00 sec)mysql [localhost] {msandbox} ((none)) > start slave sql_thread;Query OK, 0 rows affected (0.00 sec)Remove参数CHANGEREPLICATIONFILTER
REPLICATE_DO_DB=(),REPLICATE_IGNORE_DB=();其它写法：CHANGE REPLICATION FILTERREPLICATE_WILD_IGNORE_TABLE = (‘db1.new%’, ‘db2.new%’);如果相同的过滤规则出现了多次，那么只有最后一个规则会生效：CHANGE REPLICATION FILTERREPLICATE_DO_DB = (db1, db2), REPLICATE_DO_DB = (db3, db4);CHANGE REPLICATION FILTERREPLICATE_DO_DB = (db3,db4);CHANGE REPLICATION FILTER REPLICATE_DO_DB = (d1), REPLICATE_IGNORE_DB = (d2);上述就是小编为大家分享的replicate-rewrite-db和Replicate_Wild_Do_Table如何实现表级别映射复制了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注云技术行业资讯频道。

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