您好,登錄后才能下訂單哦!
這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)碛嘘P(guān)replicate-rewrite-db和Replicate_Wild_Do_Table如何實(shí)現(xiàn)表級(jí)別映射復(fù)制,文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述,閱讀完這篇文章希望大家可以有所收獲。
將3306實(shí)例下sakila的兩張表actor同步到5725實(shí)例下的ming數(shù)據(jù)庫中。
初始化數(shù)據(jù)
mysqldump -uroot -poracle -q --single-transaction -n -B sakila --tables actor --master-data=2 > sakila.sql
注意添加-n,不生成創(chuàng)建database的語句。
mysql> create database ming;
Query OK, 1 row affected (0.00 sec)
mysql> use ming
Database changed
mysql> source /root/sakila.sql
修改從庫參數(shù)文件,并重啟從庫
添加:
replicate-rewrite-db = sakila -> ming
CHANGE MASTER TO
MASTER_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這個(gè)參數(shù),只是實(shí)現(xiàn)了數(shù)據(jù)庫級(jí)別的復(fù)制,還不是表級(jí)別。這樣會(huì)很容易復(fù)制其他操作到從庫,導(dǎo)致sql thread報(bào)錯(cuò)。
比如主庫執(zhí)行
mysql> use sakila
mysql> 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: 0
mysql> update tt.test01 set c2=10 where c1=9;
Query OK, 1 row affected (0.12 sec)
Rows matched: 1 Changed: 1 Warnings: 0
有關(guān)actor_bak的動(dòng)作會(huì)被傳遞到從庫。但是從庫沒有tt數(shù)據(jù)庫,那么就會(huì)sql thread進(jìn)程就會(huì)報(bào)錯(cuò)。
Last_SQL_Error: Error 'Unknown database 'tt'' on query. Default database: 'ming'. Query: 'create table tt.t1 like actor_bak'
所以完整的寫法應(yīng)該是;
replicate-rewrite-db = sakila -> ming
replicate-wild-do-table=ming.actor
主庫執(zhí)行
mysql> use sakila
mysql> insert into tt.t1 select * from actor_bak;
Query OK, 200 rows affected (0.00 sec)
Records: 200 Duplicates: 0 Warnings: 0
從庫不會(huì)再報(bào)錯(cuò)。
添加如上參數(shù)后,可以在show slave status中看到。
mysql [localhost] {msandbox} ((none)) > show slave status\G *************************** 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: 0 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: 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) |
在線修改參數(shù)前,需要先暫停SQL thread進(jìn)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 OK, 0 rows affected (0.00 sec)
mysql [localhost] {msandbox} ((none)) > start slave sql_thread;
Query OK, 0 rows affected (0.00 sec)
Remove參數(shù)
CHANGEREPLICATIONFILTER REPLICATE_DO_DB=(),REPLICATE_IGNORE_DB=();
其它寫法:
CHANGE REPLICATION FILTER
REPLICATE_WILD_IGNORE_TABLE = ('db1.new%', 'db2.new%');
如果相同的過濾規(guī)則出現(xiàn)了多次,那么只有最后一個(gè)規(guī)則會(huì)生效:
CHANGE REPLICATION FILTER
REPLICATE_DO_DB = (db1, db2), REPLICATE_DO_DB = (db3, db4);
CHANGE REPLICATION FILTER
REPLICATE_DO_DB = (db3,db4);
CHANGE REPLICATION FILTER
REPLICATE_DO_DB = (d1), REPLICATE_IGNORE_DB = (d2);
上述就是小編為大家分享的replicate-rewrite-db和Replicate_Wild_Do_Table如何實(shí)現(xiàn)表級(jí)別映射復(fù)制了,如果剛好有類似的疑惑,不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí),歡迎關(guān)注億速云行業(yè)資訊頻道。
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場,如果涉及侵權(quán)請(qǐng)聯(lián)系站長郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。