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https://dev.mysql.com/doc/refman/8.4/en/group-replication-getting-started.html
MySQL Group Replication is provided as a plugin for the MySQL server; each server in a group requires configuration and installation of the plugin. This section provides a detailed tutorial with the steps required to create a replication group with ...In addition, InnoDB Cluster interfaces seamlessly with MySQL Router, which enables your applications to connect to the cluster without writing your own failover ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-gr-memory-monitoring-ps-instruments-enable.html
For more information, see Section 29.3, “Performance Schema Startup Configuration” and Section 29.4, “Performance Schema Runtime Configuration”.
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-firewall-groups-table.html
The firewall_groups table provides a view into the in-memory data cache for MySQL Enterprise Firewall. It lists names and operational modes of registered firewall group profiles. It is used in conjunction with the mysql.firewall_groups system table ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-tp-thread-group-stats-table.html
The tp_thread_group_stats table has these columns: TP_GROUP_ID The thread group ID. This does not count statements that the thread group was able to begin executing immediately without queuing, which can happen under the conditions described in ...
https://dev.mysql.com/doc/internals/en/class-procedure-end-group.html
Prototype: virtual void end_group(void); This member function is called whenever the end of a group in a GROUP BY is detected, it is called after the call to add() for the last source row in the group but before sending the actual aggregated result ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-fault-tolerance.html
MySQL Group Replication builds on an implementation of the Paxos distributed algorithm to provide distributed coordination between servers. In practice this means that to tolerate one failure the group must have three servers in it. However, if a ...As such, it requires a majority of servers to be active to reach quorum and thus make a ...
https://dev.mysql.com/doc/refman/8.4/en/group-replication-online-upgrade-considerations.html
When upgrading an online group you should consider the following points: Regardless of the way which you upgrade your group, it is important to disable any writes to group members until they are ready to rejoin the group. When a member is stopped, ...
https://dev.mysql.com/doc/refman/8.4/en/performance-schema-replication-group-member-actions-table.html
This table lists the member actions that are included in the member actions configuration for replication group members. You can reset the member actions configuration using the group_replication_reset_member_actions() function. The ...IGNORE means ...
https://dev.mysql.com/doc/mysql-em-plugin/en/myoem-cluster-config-metric-groupreplicationstatus-category.html
Lists the Group Replication Status configuration metrics and provides a brief description of each. Table 9.3 Group Replication Status Configuration Metrics NameDescriptionMember ID Unique identifier for a member.
https://dev.mysql.com/doc/refman/8.4/en/group-replication-probes-and-statistics.html
It then propagates that information to the group periodically to share that data with the other members. The monitoring period must be high enough to allow the other members to decide on the current write requests, but low enough that it has minimal ... The monitoring mechanism works by having each member deploying a set of probes to collect information about its work queues and ...