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https://dev.mysql.com/doc/refman/8.0/en/replication-howto.html
This section describes how to set up a MySQL server to use binary log file position based replication. There are a number of different methods for setting up replication, and the exact method to use depends on how you are setting up replication, ...
https://dev.mysql.com/doc/refman/8.0/en/replication-multi-source-configuration.html
A multi-source replication topology requires at least two sources and one replica configured. In these tutorials, we assume that you have two sources source1 and source2, and a replica replicahost. The replica replicates one database from each of ...
https://dev.mysql.com/doc/refman/8.0/en/replication-problems.html
If you have followed the instructions but your replication setup is not working, the first thing to do is check the error log for messages. Many users have lost time by not doing this soon enough after encountering problems. If you cannot tell from ...
https://dev.mysql.com/doc/refman/8.0/en/replication-snapshot-method.html
If the source database contains existing data it is necessary to copy this data to each replica. There are different ways to dump the data from the source database. To select the appropriate method of dumping the database, choose between these ...
https://dev.mysql.com/doc/refman/8.0/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. This ...
https://dev.mysql.com/doc/refman/8.0/en/reserved-accounts.html
One part of the MySQL installation process is data directory initialization (see Section 2.9.1, “Initializing the Data Directory”). During data directory initialization, MySQL creates user accounts that should be considered reserved: ...
https://dev.mysql.com/doc/refman/8.0/en/restart.html
One use for RESTART is when it is not possible or convenient to gain command-line access to the MySQL server on the server host to restart it. For example, SET PERSIST_ONLY can be used at runtime to make configuration changes to system variables ...
https://dev.mysql.com/doc/refman/8.0/en/string-functions-charset.html
MySQL has many operators and functions that return a string. This section answers the question: What is the character set and collation of such a string? For simple functions that take string input and return a string result as output, the output's ...
https://dev.mysql.com/doc/refman/8.0/en/system-variable-privileges.html
(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 ...
https://dev.mysql.com/doc/refman/8.0/en/thread-pool-tuning.html
This section provides guidelines on determining the best configuration for thread pool performance, as measured using a metric such as transactions per second. Of chief importance is the number of thread groups in the thread pool, which can be set ...