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https://dev.mysql.com/doc/refman/5.7/en/group-replication-frequently-asked-questions.html
Important The assigned value is used directly and is not affected by the skip_name_resolve system variable. What is the maximum number of MySQL servers in a group? A group can consist of maximum 9 servers. Attempting to add another server to a group ...
https://dev.mysql.com/doc/refman/5.7/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/5.7/en/group-replication-limitations.html
For a group in single-primary mode, only the primary accepts writes, so the READ COMMITTED isolation level is not important to Group Replication. Note that the limitations and issues described for multi-primary mode groups can also apply in ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-message-compression.html
This is especially important within the context of large groups of servers under load. For messages sent between online group members, Group Replication enables message compression by default. Whether a specific message is compressed depends on the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-network-partitioning.html
Therefore it is important before forcing a new membership configuration to ensure that the servers to be excluded are indeed shutdown and if they are not, shut them down before proceeding. The group needs to achieve consensus whenever a change that ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-observability.html
This is where the instrumentation of Group Replication and Performance Schema becomes important. There is a lot of automation built into the Group Replication plugin. Nonetheless, you might sometimes need to understand what is happening behind the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-recovering-from-a-point-in-time.html
View and View Changes To explain the concept of view change markers, it is important to understand what a view and a view change are. To synchronize the server joining the group with the donor up to a specific point in time, the server joining the ...
https://dev.mysql.com/doc/refman/5.7/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 These columns are important for monitoring the performance of the members connected in ... Each member in a replication group certifies and applies transactions received by the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-restarting-group.html
Group Replication is designed to ensure that the database service is continuously available, even if some of the servers that form the group are currently unable to participate in it due to planned maintenance or unplanned issues. As long as the ...
https://dev.mysql.com/doc/refman/5.7/en/group-replication-server-states.html
No Important Once an instance enters ERROR state, the super_read_only option is set to ON. There are various states that a server instance can be in. If servers are communicating properly, all report the same states for all servers. However, if ...