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https://dev.mysql.com/doc/refman/8.0/en/show-replica-status.html
SHOW {REPLICA | SLAVE} STATUS [FOR CHANNEL channel] This statement provides status information on essential parameters of the replica threads. From MySQL 8.0.22, use SHOW REPLICA STATUS in place of SHOW SLAVE STATUS, which is deprecated from that ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log-logging-configuration.html
This section describes how to configure audit logging characteristics, such as the file to which the audit log plugin writes events, the format of written events, whether to enable log file compression and encryption, and space management. For ...
https://dev.mysql.com/doc/refman/8.0/en/error-log-rule-based-filtering.html
The log_filter_dragnet log filter component enables log filtering based on user-defined rules. To enable the log_filter_dragnet filter, first load the filter component, then modify the log_error_services value. The following example enables ...
https://dev.mysql.com/doc/refman/8.0/en/error-lost-connection.html
Usually it indicates network connectivity trouble and you should check the condition of your network if this error occurs frequently. If the error message includes “during query,” this is probably the case you are experiencing. Sometimes the ...
https://dev.mysql.com/doc/refman/8.0/en/events-privileges.html
To enable or disable the execution of scheduled events, it is necessary to set the value of the global event_scheduler system variable. The EVENT privilege governs the creation, modification, and deletion of events. For example, suppose that ...
https://dev.mysql.com/doc/refman/8.0/en/grant-tables.html
The mysql system database includes several grant tables that contain information about user accounts and the privileges held by them. For information about other tables in the system database, see Section 7.3, “The mysql System Schema”. The ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-adding-instances.html
At this point, the group has one member in it, server s1, which has some data in it. It is now time to expand the group by adding the other two servers configured previously. 20.2.1.6.1 Adding a Second Instance In order to add a second instance, ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-frequently-asked-questions.html
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 with 9 members causes the request to join to be refused. This limit has been identified from testing and ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-performance-xcom-cache.html
The group communication engine for Group Replication (XCom, a Paxos variant) includes a cache for messages (and their metadata) exchanged between the group members as a part of the consensus protocol. Among other functions, the message cache is ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-buffer-pool-flushing.html
InnoDB performs certain tasks in the background, including flushing of dirty pages from the buffer pool. Dirty pages are those that have been modified but are not yet written to the data files on disk. In MySQL 8.0, buffer pool flushing is ...