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https://dev.mysql.com/doc/refman/9.7/en/replication-multi-source-adding-gtid-master.html
These steps assume you have enabled GTIDs for transactions on the sources using gtid_mode=ON, created a replication user, ensured that the replica is using TABLE based replication applier metadata repositories, and provisioned the replica with data ...Use CHANGE REPLICATION SOURCE TO to configure a replication channel for each source on the replica (see Section 19.2.2, “Replication ...
https://dev.mysql.com/doc/refman/9.7/en/replication-options.html
server_uuid The MySQL server generates a true UUID in addition to the default or user-supplied server ID set in the server_id system variable. If data_dir/auto.cnf is not found, generate a new UUID and save it to this file, creating the file if ...
https://dev.mysql.com/doc/refman/9.7/en/replication-solutions-backups-mysqldump.html
Using mysqldump to create a copy of a database enables you to capture all of the data in the database in a format that enables the information to be imported into another instance of MySQL Server (see Section 6.5.4, “mysqldump — A Database ...
https://dev.mysql.com/doc/refman/9.7/en/replication-solutions-scaleout.html
Most websites fit into this category, where users are browsing the website, reading articles, posts, or viewing products. Start by creating a wrapper library or module that implements the following functions: safe_writer_connect() ... You can use ...
https://dev.mysql.com/doc/refman/9.7/en/reserved-accounts.html
During data directory initialization, MySQL creates user accounts that should be considered reserved: 'root'@'localhost: Used for administrative purposes. One part of the MySQL installation process is data directory initialization (see Section ...
https://dev.mysql.com/doc/refman/9.7/en/security-options.html
The following table shows mysqld options and system variables that affect security. For descriptions of each of these, see Section 7.1.7, “Server Command Options”, and Section 7.1.8, “Server System Variables”.
https://dev.mysql.com/doc/refman/9.7/en/select-optimization.html
Besides SELECT statements, the tuning techniques for queries also apply to constructs such as CREATE TABLE...AS SELECT, INSERT INTO...SELECT, and WHERE clauses in DELETE statements. Scalability means that your application can handle more ...
https://dev.mysql.com/doc/refman/9.7/en/server-plugins.html
MySQL supports an plugin API that enables creation of server plugins. Users are encouraged to migrate to the Connection Control component; see Section 8.4.2, “The Connection Control Component”, for more information. Group Replication enables ...
https://dev.mysql.com/doc/refman/9.7/en/show-replica-status.html
The relay log file name (Relay_Log_File) is set according to the relay_log_recovery setting, either a new file that was created at server start or the first relay log file present. Source_User The user name of the account used to connect to the ...
https://dev.mysql.com/doc/refman/9.7/en/spatial-function-argument-handling.html
To ensure SRID 0 behavior, create geometry values using SRID 0. This provides additional flexibility to users because it is unnecessary to be concerned about the uniqueness of geometry data. Spatial values, or geometries, have the properties ...