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https://dev.mysql.com/doc/refman/8.4/en/group-replication-multi-primary-mode.html
(In a group that is running in single-primary mode, new members default to read-only in any case.) Members take into account the major.minor.release version of the MySQL software (and thus, of the Group Replication plugin) when checking their ... In ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-observability.html
There is a lot of automation built into the Group Replication plugin. Nonetheless, you might sometimes need to understand what is happening behind the scenes. This is where the instrumentation of Group Replication and Performance Schema becomes ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-options.html
The next two sections contain information about MySQL server system and server status variables which are specific to the Group Replication plugin.
https://dev.mysql.com/doc/refman/8.4/en/group-replication-performance-message-fragmentation.html
As with most other Group Replication system variables, you must restart the Group Replication plugin for the change to take effect. When an abnormally large message is sent between Group Replication group members, it can result in some group ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-probes-and-statistics.html
Such probes are scattered throughout the plugin stack and allow one to establish metrics, such as: the certifier queue size; the replication applier queue size; the total number of transactions certified; the total number of remote transactions ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-replication-group-member-stats.html
This information can also help you to decide how to adjust the flow control of the Group Replication plugin, see Section 20.7.2, “Flow Control”. Each member in a replication group certifies and applies transactions received by the group.
https://dev.mysql.com/doc/refman/8.4/en/group-replication-responses-failure-rejoin.html
With auto-rejoin, when the member's expulsion or unreachable majority timeout is reached, it makes an attempt to rejoin (using the current plugin option values), then continues to make further auto-rejoin attempts up to the specified number of tries. The group_replication_autorejoin_tries system variable makes a member that has been expelled or reached its unreachable majority timeout try to rejoin the group ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-server-states.html
OFFLINE The Group Replication plugin is loaded but the member does not belong to any group. The state of a Group Replication group member shows its current role in the group. The Performance Schema table replication_group_members shows the state ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-user-credentials.html
If the replication user for distributed recovery uses the caching SHA-2 authentication plugin, and you are not using SSL for distributed recovery connections, RSA key-pairs are used for password exchange. Group Replication uses a distributed ...
https://dev.mysql.com/doc/refman/8.4/en/identifier-case-sensitivity.html
That is true for names of cursors, conditions, procedures, functions, savepoints, stored routine parameters, stored program local variables, and plugins. In MySQL, databases correspond to directories within the data directory. Each table within a ...