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https://dev.mysql.com/doc/refman/8.0/en/group-replication-group-membership.html
However, if a member leaves the group involuntarily, for example because it has stopped unexpectedly or the network connection is down, it cannot initiate the reconfiguration. In MySQL Group Replication, a set of servers forms a replication group.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-launching.html
Otherwise, you must install the plugin manually; to do this, connect to the server using the mysql client, and issue the SQL statement shown here: mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so'; Important The mysql.session ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-message-compression.html
The TCP peer-to-peer nature of the interconnections between N participants in the group makes the sender send the same amount of data N times. For messages sent between online group members, Group Replication enables message compression by default.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-multi-primary-mode.html
If a member stops accepting write transactions, for example, in the event of an unexpected server exit, clients connected to it can be redirected, or failed over, to any other member that is in read/write mode. Group Replication does not handle ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-observability.html
For example, you can connect to a single server in the group and obtain both local and global information by issuing select statements on the Group Replication related Performance Schema tables. There is a lot of automation built into the Group ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-plugin-architecture.html
In one direction, from server to the plugin, there are notifications for events such as the server starting, the server recovering, the server being ready to accept connections, and the server being about to commit a transaction. MySQL Group ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-replication-group-member-stats.html
To use this table to monitor a Group Replication member, issue the following statement: mysql> SELECT * FROM performance_schema.replication_group_member_stats\G Beginning with MySQL 8.0.19, you can also use the following statement: mysql> TABLE ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-replication-group-members.html
Shown in the table is each member's server_uuid, as well as the member's host name and port number, which clients use to connect to it. The performance_schema.replication_group_members table is used for monitoring the status of the different server ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-security.html
This section explains how to secure a group, securing the connections between members of a group, or by establishing a security perimeter using an IP address allowlist.
https://dev.mysql.com/doc/refman/8.0/en/group-replication-server-states.html
Other group members can connect to it, as can clients if applicable. This can happen if a member is disconnected involuntarily, for example. The state of a Group Replication group member shows its current role in the group. The Performance Schema ...