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https://dev.mysql.com/doc/refman/8.0/en/group-replication-connection-security.html
From MySQL 8.0.27, Group Replication can secure group communication connections between members by one of the following methods: Using its own implementation of the security protocols, including TLS/SSL and the use of an allowlist for incoming ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-columns-extensions-table.html
The COLUMNS_EXTENSIONS table (available as of MySQL 8.0.21) provides information about column attributes defined for primary and secondary storage engines. The COLUMNS_EXTENSIONS table has these columns: TABLE_CATALOG The name of the catalog to ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-table-constraints-extensions-table.html
The TABLE_CONSTRAINTS_EXTENSIONS table (available as of MySQL 8.0.21) provides information about table constraint attributes defined for primary and secondary storage engines. The TABLE_CONSTRAINTS_EXTENSIONS table has these columns: ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tables-extensions-table.html
The TABLES_EXTENSIONS table (available as of MySQL 8.0.21) provides information about table attributes defined for primary and secondary storage engines. The TABLES_EXTENSIONS table has these columns: TABLE_CATALOG The name of the catalog to which ...
https://dev.mysql.com/doc/refman/8.0/en/information-schema-tablespaces-extensions-table.html
The TABLESPACES_EXTENSIONS table (available as of MySQL 8.0.21) provides information about tablespace attributes defined for primary storage engines. The TABLESPACES_EXTENSIONS table has these columns: TABLESPACE_NAME The name of the tablespace.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-table-fragments.html
The table_fragments table provides information about the fragmentation, partitioning, distribution, and (internal) replication of NDB tables.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-config.html
This tool extracts current configuration information for data nodes, SQL nodes, and API nodes from one of a number of sources: an NDB Cluster management node, or its config.ini or my.cnf file. By default, the management node is the source for the ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-print-frag-file.html
It is intended for use in helping to diagnose issues with data node restarts. Each fragment file contains records of the fragments belonging to each NDB table. For more information about cluster fragment files, see NDB Cluster Data Node File System ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-innodb-replicaset-introduction.html
This chapter introduces MySQL InnoDB ReplicaSet, which combines MySQL technologies to enable you to deploy and administer Chapter 19, Replication. This content is a high-level overview of InnoDB ReplicaSet, for full documentation, see MySQL InnoDB ...
https://dev.mysql.com/doc/refman/8.0/en/performance-schema-table-wait-summary-tables.html
The following sections describe the table I/O and lock wait summary tables: table_io_waits_summary_by_index_usage: Table I/O waits per index table_io_waits_summary_by_table: Table I/O waits per table table_lock_waits_summary_by_table: Table lock ...