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https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-config-nodes.html
If HostName has not been set for a data node in the configuration file, localhost is used here. The config_nodes table shows nodes configured in an NDB Cluster config.ini file. For each node, the table displays a row containing the node ID, the ...
https://dev.mysql.com/doc/refman/8.0/en/server-configuration-validation.html
2018-11-05T10:40:02.712178Z 0 [ERROR] [MY-010119] [Server] Aborting Remember that --defaults-file, if specified, must be the first option on the command line. 2018-11-05T10:40:02.712178Z 0 [ERROR] [MY-010119] [Server] Aborting --validate-config can ... As of MySQL 8.0.16, MySQL Server supports a --validate-config option that enables the startup configuration to be checked for problems without running the server in normal operational mode: mysqld --validate-config If no errors are found, the server terminates with an exit code of ...
https://dev.mysql.com/doc/refman/8.0/en/drop-logfile-group.html
The log file group must already exist or an error results. DROP LOGFILE GROUP logfile_group ENGINE [=] engine_name This statement drops the log file group named logfile_group. (For information on creating log file groups, see Section 15.1.16, ...
https://dev.mysql.com/doc/refman/8.0/en/unix-signal-response.html
The server response to SIGUSR1 is a subset of the response to SIGHUP, enabling SIGUSR1 to be used as a more “lightweight” signal that flushes certain logs without the other SIGHUP effects such as flushing the thread and host caches and writing a ... On Unix and Unix-like systems, a process can be the recipient of signals sent to it by the root system account or the system account that owns the ...
https://dev.mysql.com/doc/refman/8.0/en/version-tokens-usage.html
In the token list for a given server, token names represent database names and token values are read or write depending on whether the database must be used in read-only fashion or whether it can take reads and writes. But suppose that the ...Client ... Before using Version Tokens, install it according to the instructions provided at Section 7.6.6.2, “Installing or Uninstalling Version ...
https://dev.mysql.com/doc/refman/8.0/en/replication-options.html
System Variable server_uuid Scope Global Dynamic No SET_VAR Hint Applies No Type String When starting, the MySQL server automatically obtains a UUID as follows: Attempt to read and use the UUID written in the file data_dir/auto.cnf (where data_dir ...For servers that are used in a replication topology, you must specify a unique server ID for each replication server, in the range from 1 to 232 − ...Options and variables ...
https://dev.mysql.com/doc/refman/8.0/en/drop-table.html
Be careful with this statement! For each table, it removes the table definition and all table data. If the table is partitioned, the statement removes the table definition, all its partitions, all data stored in those partitions, and all partition ...DROP TABLE causes an implicit commit, except when used with the TEMPORARY ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-limitations.html
A cloned tablespace file with the same path as the source tablespace file would cause a conflict. The clone plugin is subject to these limitations: An instance cannot be cloned from a different MySQL server series. Before 8.0.37, the point release ...For example, you cannot clone between MySQL 8.0 and MySQL 8.4, but can clone within a series such as MySQL 8.0.37 and MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/json-modification-functions.html
An error occurs if the json_doc argument is not a valid JSON document or any path argument is not a valid path expression or contains a * or ** wildcard. An error occurs if the json_doc argument is not a valid JSON document or any path argument is ... The functions in this section modify JSON values and return the ...Synonym for JSON_MERGE_PRESERVE(); ...
https://dev.mysql.com/doc/refman/8.0/en/replication-rules-channel-based-filters.html
The following command options support channel specific replication filters using this format: --replicate-do-db=channel:database_id --replicate-ignore-db=channel:database_id --replicate-do-table=channel:table_id ...Channel specific replication ...