备份锁是 MySQL 8.0 的新特性之一,比5.7版本的flush table with read lock要轻量。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 mysql>CREATEUSERclone_user@'%'IDENTIFIEDby'password';mysql>GRANTBACKUP_ADMINON*.*TO'clone_user';#BACKUP_A
mysql8.0.17里 引入了一个clone插件, 可以方便我们快速克隆出一个从库或者MGR的节点: 8.0.17 releasenote地址:https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-17.html MySQL现在提供了一个克隆插件,允许在本地克隆InnoDB数据(不常用)或从远程MySQL服务器实例克隆。本地克隆操作将克隆的数据存储在...
SELECT statement does not create indexes, constraints, primary keys, foreign keys associated with the source table. If you want to clone the source table, we can use the following method. To create a table, use CREATE TABLE destination_table LIKE source_table To copy the data, use INSERT...
In this state we copy all database files and send to the caller. 该状态会拷贝所有的数据库文件,在开始拷贝前,会启动Page Tracking,记录CLONE START LSN这个lsn后被改动的所有InnoDB页的改动。更具体得说,CLONE START LSN的取值就是当前的checkpoint lsn,这是因为这个阶段直接拷贝物理文件,InnoDB只能确保...
clone_status table shows the status of the current or last executed cloning operation only. The table only ever contains one row of data, or is empty. The clone_status table has these columns: ID A unique cloning operation identifier in the current MySQL server instance. PID Process ...
mysql> GRANT BACKUP_ADMIN ON *.* TO 'clone_user'; 1. 2.2 使用具有BACKUP_ADMIN的账号,登录到原实例中,执行: mysql> clone local data directory = '/data/mysql_3307/data';Query OK, 0 rows affected (20.40 sec) 1. 2.3 查看克隆的进度 ...
Follow this procedure to set up replication with existing data: If you used MySQL Server's clone plugin to create a clone from an existing replica (seeCloning for Replication), the data is already transferred. Otherwise, import the data to the replica using one of the following methods. ...
4.Clone Replication Coordinates (WL#9211)解决增量同步问题,增加了包括Binlog等相关信息用于建立与donor节点(数据源节点); 5.Support cloning encrypted database (WL#9682)最后一个worklog解决了数据加密情况下的数据拷贝问题。 克隆功能实现分析 克隆功能具体是怎么实现的,现有的文章都说是跟xtrabackup类似,那到底有...
• Online operations avoid the disk I/O and CPU cycles associated with the table-copy method, which minimizes overall load on the database. Minimizing load helps maintain good performance and high throughput during the DDL operation. • Online operations read less data into the buffer pool th...
当主从复制采用 binlog 的行模式时,如果从库启用 slow_query_log、log_slow_replica_statements 且从库重放 CREATE TABLE、DROP TABLE 时因特殊情况(比如被...