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https://dev.mysql.com/doc/refman/8.0/en/replication-privilege-checks.html
By default, MySQL replication (including Group Replication) does not carry out privilege checks when transactions that were already accepted by another server are applied on a replica or group member. MySQL then checks each transaction against the ...The use of a PRIVILEGE_CHECKS_USER account helps secure a replication channel against the unauthorized or accidental use of privileged or unwanted ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-replication.html
In the following section, we provide answers to questions that are most frequently asked about MySQL Replication. Must the replica be connected to the source all the time? A.14.2. When and how much can MySQL replication improve the performance of ...Must I enable networking on my source and replica to enable replication? ...
https://dev.mysql.com/doc/refman/8.0/en/document-store-interfaces.html
To work with MySQL as a document store, you use dedicated components and a choice of clients that support communicating with the MySQL server to develop document based applications. You can use MySQL Shell to prototype applications, execute queries ...
https://dev.mysql.com/doc/refman/8.0/en/multiple-unix-servers.html
Note The discussion here uses mysqld_safe to launch multiple instances of MySQL. For MySQL installation using an RPM distribution, server startup and shutdown is managed by systemd on several Linux platforms. On these platforms, mysqld_safe is not ...Compiling in different base directories for each installation also results automatically in a separate, compiled-in data directory, log file, and PID file location for each ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo.html
ndbinfo is included with NDB Cluster support in the MySQL Server; no special compilation or configuration steps are required; the tables are created by the MySQL Server when it connects to the cluster. row *************************** Engine: MEMORY ... ndbinfo is a database containing information specific to NDB ...
https://dev.mysql.com/doc/refman/8.0/en/security-against-attack.html
When you connect to a MySQL server, you should use a password. You can also use MySQL's internal SSL support to make the connection even more secure. Alternatively, use SSH to get an encrypted TCP/IP connection between a MySQL server and a MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-online-add-node-example.html
You can verify that all existing data nodes were restarted using the updated configuration by checking the ndbinfo.nodes table in the mysql client. Shut down and restart each MySQL server acting as an SQL node in the cluster using mysqladmin ... In ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-redo-log.html
InnoDB tries to maintain 32 redo log files in total, with each file equal in size to 1/32 * innodb_redo_log_capacity; however, file sizes may differ for a time after modifying the innodb_redo_log_capacity setting. Stop the MySQL server and make sure ... The redo log is a disk-based data structure used during crash recovery to correct data written by incomplete ...
https://dev.mysql.com/doc/refman/8.0/en/audit-log.html
From MySQL 8.0.30, you can add statistics for the time and size of each query to detect outliers. Note MySQL Enterprise Audit is an extension included in MySQL Enterprise Edition, a commercial product. MySQL Enterprise Edition includes MySQL ...The ...
https://dev.mysql.com/doc/refman/8.0/en/memory-use.html
MySQL allocates buffers and caches to improve performance of database operations. The default configuration is designed to permit a MySQL server to start on a virtual machine that has approximately 512MB of RAM. You can improve MySQL performance by ...The InnoDB buffer pool is a memory area that holds cached InnoDB data for tables, indexes, and other auxiliary ...