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https://dev.mysql.com/doc/refman/8.0/en/group-replication-bootstrap.html
This is why the value of the group_replication_bootstrap_group option was not stored in the instance's option file. If it is saved in the option file, upon restart the server automatically bootstraps a second group with the same name. mysql> CREATE ... The process of starting a group for the first time is called ...
https://dev.mysql.com/doc/refman/8.0/en/key-cache-block-size.html
This permits tuning of the performance of I/O operations for index files. When reading the big leaf nodes, the server pulls in a lot of unnecessary data, effectively preventing reading other leaf nodes. To control the size of blocks in the .MYI ...
https://dev.mysql.com/doc/refman/8.0/en/macos-installation-prefpane.html
Figure 2.22 MySQL Preference Pane: Instances Figure 2.23 MySQL Preference Pane: Initialize Database The Configuration page shows MySQL Server options including the path to the MySQL configuration file. Figure 2.20 MySQL Preference Pane: Location The ... The MySQL Installation Package includes a MySQL preference pane that enables you to start, stop, and control automated startup during boot of your MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-examples.html
For example, if analysis shows that the issue is not related to file I/O in a particular storage engine, disable the file I/O instruments for that engine. With each iteration, the Performance Schema output, particularly the events_waits_history_long ... The Performance Schema is a tool to help a DBA do performance tuning by taking real measurements instead of “wild guesses.” This section demonstrates some ways to use the Performance Schema for this ...
https://dev.mysql.com/doc/refman/8.0/en/replication-configuration.html
This section describes how to configure the different types of replication available in MySQL and includes the setup and configuration required for a replication environment, including step-by-step instructions for creating a new replication ...
https://dev.mysql.com/doc/refman/8.0/en/scheduler-component.html
At startup, the scheduler component registers the performance_schema.component_scheduler_tasks table, which lists the currently scheduled tasks and some runtime data about each one. Developers who wish to incorporate scheduler-queueing capabilities ... Note The scheduler component is included in MySQL Enterprise Edition, a commercial ...
https://dev.mysql.com/doc/refman/8.0/en/server-configuration.html
In addition, the MySQL sys schema is a set of objects that provides convenient access to data collected by the Performance Schema; see Chapter 30, MySQL sys Schema. To use the option every time the server runs, put it in an option file. The MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/expired-password-handling.html
If the server disconnects the client, it returns an ER_MUST_CHANGE_PASSWORD_LOGIN error: $> mysql -u myuser -p Password: ****** ERROR 1862 (HY000): Your password has expired. For any operation not permitted within the session, the server returns an ... MySQL provides password-expiration capability, which enables database administrators to require that users reset their ...Passwords ...Note Although it is possible to ...
https://dev.mysql.com/doc/refman/8.0/en/create-table-secondary-indexes.html
If a secondary index is not defined on a virtual column, there are additional costs for reads, as virtual column values must be computed each time the column's row is examined. The data length of logged values is limited by the index key limit of ...
https://dev.mysql.com/doc/refman/8.0/en/cleartext-pluggable-authentication.html
Table 8.19 Plugin and Library Names for Cleartext Authentication Plugin or File Plugin or File Name Server-side plugin None, see discussion Client-side plugin mysql_clear_password Library file None (plugin is built in) Many client-side ... A ...Note ...