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https://dev.mysql.com/doc/refman/9.7/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 ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-event-reports.html
In this section, we discuss the types of event logs provided by NDB Cluster, and the types of events that are logged. NDB Cluster provides two types of event log: The cluster log, which includes events generated by all cluster nodes. The cluster ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-limitations-multiple-nodes.html
The following are issues relating to the use of multiple MySQL servers as NDB Cluster SQL nodes, and are specific to the NDBCLUSTER storage engine: Stored programs not distributed. Stored procedures, stored functions, triggers, and scheduled events ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-mgm-definition.html
The [ndb_mgmd] section is used to configure the behavior of the management server. If multiple management servers are employed, you can specify parameters common to all of them in an [ndb_mgmd default] section. [mgm] and [mgm default] are older ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo-arbitrator-validity-summary.html
The arbitrator_validity_summary table provides a composite view of the arbitrator with regard to the cluster's data nodes. If it has more than 1 row for longer than a few moments, then either not all nodes are connected to the arbitrator, or all ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-ndbinfo.html
ndbinfo is a database containing information specific to NDB Cluster. This database contains a number of tables, each providing a different sort of data about NDB Cluster node status, resource usage, and operations. You can find more detailed ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-overview-requirements.html
One of the strengths of NDB Cluster is that it can be run on commodity hardware and has no unusual requirements in this regard, other than for large amounts of RAM, due to the fact that all live data storage is done in memory. (It is possible to ...
https://dev.mysql.com/doc/refman/9.7/en/mysql-cluster-programs-ndb-error-reporter.html
ndb_error_reporter creates an archive from data node and management node log files that can be used to help diagnose bugs or other problems with a cluster. It is highly recommended that you make use of this utility when filing reports of bugs in ...
https://dev.mysql.com/doc/refman/9.7/en/mysqld-safe.html
mysqld_safe is the recommended way to start a mysqld server on Unix. mysqld_safe adds some safety features such as restarting the server when an error occurs and logging runtime information to an error log. A description of error logging is given ...
https://dev.mysql.com/doc/refman/9.7/en/performance-schema-setup-metrics-table.html
The setup_metrics table lists the available metrics: mysql> select * from performance_schema.setup_metrics\G *************************** 34. row *************************** NAME: undo_tablespaces_active METER: mysql.inno METRIC_TYPE: ASYNC GAUGE ...