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https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-mgm.html
--usage Command-Line Format --usage Display help text and exit; same as --help. The ndb_mgm management client process is actually not needed to run the cluster. Its value lies in providing a set of commands for checking the cluster's status, ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-redo-log-reader.html
Usage ndb_redo_log_reader file_name [options] file_name is the name of a cluster redo log file. Reads a redo log file, checking it for errors, printing its contents in a human-readable format, or both. ndb_redo_log_reader is intended for use ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndb-sign-keys.html
--usage Command-Line Format --usage Print help text, then exit (alias for --help). Management of TLS keys and certificates in implemented in NDB Cluster as the executable utility program ndb_sign_keys, which can normally be found in the MySQL bin ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndbd.html
--usage Command-Line Format --usage Display help text and exit; same as --help. The ndbd binary provides the single-threaded version of the process that is used to handle all the data in tables employing the NDBCLUSTER storage engine. This data ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-programs-ndbinfo-select-all.html
--usage Command-Line Format --usage Display help text and exit; same as --help. ndbinfo_select_all is unable to read the following tables: arbitrator_validity_detail arbitrator_validity_summary cluster_locks cluster_operations cluster_transactions ... ndbinfo_select_all is a client program that selects all rows and columns from one or more tables in the ndbinfo database Not all ndbinfo tables available in the mysql client can be read by this program (see later in this ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-ps-tables.html
Using the thread ID or OS thread ID for a given thread in the threads or setup_threads table, it is possible to obtain considerable information from Performance Schema about plugin execution and resource usage. NDB provides information in the MySQL ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-sql-statements.html
SHOW ENGINE NDB STATUS, SHOW ENGINE NDBCLUSTER STATUS The output of this statement contains information about the server's connection to the cluster, creation and usage of NDB Cluster objects, and binary logging for NDB Cluster replication. See ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-cluster-tde.html
This is similar to what happens with compressed LCPs and compressed backups, and normally results in increased I/O thread CPU usage; you may wish to adjust ThreadConfig (if in use) with regard to the I/O threads. The following sections provide ...
https://dev.mysql.com/doc/refman/8.4/en/mysql-gr-memory-monitoring-ps-sample-queries.html
This section describes sample queries using the instruments and events for monitoring Group Replication memory usage. You can also define queries which sum various events to provide overviews of specific areas of memory usage. The memory data can ...
https://dev.mysql.com/doc/refman/8.4/en/show-profile.html
For values that depend on the getrusage() system call, NULL is returned on systems such as Windows that do not support the call. Note The SHOW PROFILE and SHOW PROFILES statements are deprecated; expect them to be removed in a future MySQL release.