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https://dev.mysql.com/doc/refman/8.4/en/replication-multi-source-configuration.html
Replicas in a multi-source replication topology require TABLE repositories for the replica's connection metadata repository and applier metadata repository, which are the default in MySQL 8.4. Create a suitable user account on all the sources that ... A multi-source replication topology requires at least two sources and one replica ...
https://dev.mysql.com/doc/refman/8.4/en/replication-problems.html
If the replica is running, check whether it established a connection to the source. If the receiver thread state says Connecting to master, check the following: Verify the privileges for the replication user on the source. Check that the host name ... If you have followed the instructions but your replication setup is not working, the first thing to do is check the error log for ...
https://dev.mysql.com/doc/refman/8.4/en/replication-snapshot-method.html
In addition, InnoDB Cluster interfaces seamlessly with MySQL Router, which enables your applications to connect to the cluster without writing your own failover process. To import the data, either copy the dump file to the replica, or access the ...
https://dev.mysql.com/doc/refman/8.4/en/request-access.html
After the server accepts a connection, it enters Stage 2 of access control. For each request that you issue through the connection, the server determines what operation you want to perform, then checks whether your privileges are sufficient. The ...
https://dev.mysql.com/doc/refman/8.4/en/reserved-accounts.html
This account is locked so that it cannot be used for client connections. This account is locked so that it cannot be used for client connections. This account is locked so that it cannot be used for client connections. One part of the MySQL ...
https://dev.mysql.com/doc/refman/8.4/en/restart.html
Note After executing a RESTART statement, the client can expect the current connection to be lost. If auto-reconnect is enabled, the connection is reestablished after the server restarts. One use for RESTART is when it is not possible or convenient ...
https://dev.mysql.com/doc/refman/8.4/en/show-variables.html
These are the values used to initialize the corresponding session variables for new connections to MySQL. With a SESSION modifier, the statement displays the system variable values that are in effect for the current connection. SHOW [GLOBAL | ...
https://dev.mysql.com/doc/refman/8.4/en/string-functions-charset.html
For operations that convert to character data, the character set and collation of the strings that result from the operations are defined by the character_set_connection and collation_connection system variables that determine the default connection ... MySQL has many operators and functions that return a ...
https://dev.mysql.com/doc/refman/8.4/en/system-variable-privileges.html
In addition, you must connect to the server using an encrypted connection and supply an SSL certificate with the Subject value specified by the persist_only_admin_x509_subject system variable. For persist-restricted variables, RESET PERSIST does not ...(For information about dynamic variables, see Section 7.1.9.2, “Dynamic System Variables”.) For certain global system variables, SET can be used to persist their value to the mysqld-auto.cnf file in the data directory, to affect server operation for subsequent ...
https://dev.mysql.com/doc/refman/8.4/en/time-zone-support.html
Each client that connects has its own session time zone setting, given by the session time_zone variable. For example: mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql The mysql command shown here assumes that you connect to the ...