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https://dev.mysql.com/doc/refman/8.0/en/log-file-maintenance.html
When using MySQL with logging enabled, you may want to back up and remove old log files from time to time and tell MySQL to start logging to new files. As described in Section 7.4, “MySQL Server Logs”, MySQL Server can create several different ...However, you must clean up these files regularly to ensure that the logs do not take up too much disk ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-config-file.html
(If you build NDB Cluster from source on a Unix system, the default location is /usr/local/mysql-cluster.) This can be overridden at runtime by starting the management server with the --configdir option. This file, with which you should be familiar ... Configuring NDB Cluster requires working with two files: my.cnf: Specifies options for all NDB Cluster ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-limitations-transactions.html
NDBCLUSTER stores only part of a column value that uses any of MySQL's BLOB or TEXT data types in the table visible to MySQL; the remainder of the BLOB or TEXT is stored in a separate internal table that is not accessible to MySQL. Because the MySQL ... A number of limitations exist in NDB Cluster with regard to the handling of ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-nodes.html
For each data node that is running in the cluster, a corresponding row in this table provides the node's node ID, status, and uptime. Notes The uptime column shows the time in seconds that this node has been running since it was last started or ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-programs-ndb-error-reporter.html
The archive is named ndb_error_report_YYYYMMDDhhmmss.tar.bz2, where YYYYMMDDhhmmss is a datetime string. ndb_error_reporter also accepts the options listed here: --connection-timeout=timeout Command-Line Format --connection-timeout=# Type Integer ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-communication-protocol.html
From MySQL 8.0.16, Group Replication has the concept of a communication protocol for the group. The Group Replication communication protocol version can be managed explicitly, and set to accommodate the oldest MySQL Server version that you want the ...When a new member joins a replication group, it checks the communication protocol version that is announced by the existing members of the ...
https://dev.mysql.com/doc/refman/8.0/en/debugging-server.html
If mysqld starts to eat up CPU or memory or if it “hangs,” you can use mysqladmin processlist status to find out if someone is executing a query that takes a long time. If you are using some functionality that is very new in MySQL, you can try ...You should also read the OS-specific section in this manual for problems that may be unique to your ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-migration.html
Where can I find information on how to upgrade or downgrade MySQL? A.8.1. Where can I find information on how to upgrade or downgrade MySQL? For detailed upgrade information, see Chapter 3, Upgrading MySQL. This may seem more complicated, but ...Do ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-server-transactions.html
The server_transactions table is subset of the cluster_transactions table, but includes only those transactions in which the current SQL node (MySQL Server) is a participant, while including the relevant connection IDs. (Currently, the MySQL Server ...Together with the block name, this number can be used to look up a given instance in the threadblocks ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ps-tables.html
NDB 8.0 provides information in the MySQL Performance Schema about threads and transaction memory usage; NDB 8.0.29 adds ndbcluster plugin threads, and NDB 8.0.30 adds instrumenting for transaction batch memory. row *************************** ...