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https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-multi-source.html
It is possible to use NDB Cluster for bidirectional replication between two clusters, as well as for circular replication between any number of clusters. Each cluster has two SQL nodes, with SQL nodes A and B belonging to Cluster 1, SQL nodes C and ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-replication-preparation.html
Preparing the NDB Cluster for replication consists of the following steps: Check all MySQL servers for version compatibility (see Section 21.7.2, “General Requirements for NDB Cluster Replication”). To provide replication backup capability, you ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-thread-states.html
Committing events to binlog Opening mysql.ndb_apply_status Processing events The thread is processing events for binary logging. Processing events from schema table The thread is doing the work of schema replication. Shutting down Syncing ndb table ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-cluster-what-is-new-7-5.html
Beginning with NDB 7.5.31, all MySQL server and client binaries included in the NDB distribution are compiled with support for Open SSL 3.0 For more information, see the descriptions of the indicated ndb_restore options. Major changes and new ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-commands.html
mysql sends each SQL statement that you issue to the server to be executed. There is also a set of commands that mysql itself interprets. For a list of these commands, type help or \h at the mysql> prompt: mysql> help List of all MySQL commands: ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-install-db.html
Note mysql_install_db is deprecated as of MySQL 5.7.6 because its functionality has been integrated into mysqld, the MySQL server. To initialize a MySQL installation, invoke mysqld with the --initialize or --initialize-insecure option. You should ...
https://dev.mysql.com/doc/refman/5.7/en/mysql-server.html
MySQL distributions on Unix and Unix-like system include a script named mysql.server, which starts the MySQL server using mysqld_safe. It can be used on systems such as Linux and Solaris that use System V-style run directories to start and stop ...
https://dev.mysql.com/doc/refman/5.7/en/non-typed-operators.html
->> Return value from JSON column after evaluating path and unquoting the result; equivalent to JSON_UNQUOTE(JSON_EXTRACT()). 5.7.13 / Division operator := Assign a value = Assign a value (as part of a SET statement, or as part of the SET clause in ...
https://dev.mysql.com/doc/refman/5.7/en/optimizing-innodb-diskio.html
If you follow best practices for database design and tuning techniques for SQL operations, but your database is still slow due to heavy disk I/O activity, consider these disk I/O optimizations. If the Unix top tool or the Windows Task Manager shows ...
https://dev.mysql.com/doc/refman/5.7/en/performance-schema.html
The MySQL Performance Schema is a feature for monitoring MySQL Server execution at a low level. The Performance Schema has these characteristics: The Performance Schema provides a way to inspect internal execution of the server at runtime. It is ...