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https://dev.mysql.com/doc/refman/8.0/en/replication-binlog-encryption-scope.html
Existing binary log files and relay log files that were present on the server when you started encryption are not encrypted. Data in motion in the replication event stream, which is sent to MySQL clients including mysqlbinlog, is decrypted for ...
https://dev.mysql.com/doc/refman/8.0/en/stop-replica.html
When the timeout value is reached, the issuing client returns an error message and stops waiting, but the STOP REPLICA instruction remains in effect. Like START REPLICA, this statement may be used with the IO_THREAD and SQL_THREAD options to name ...
https://dev.mysql.com/doc/refman/8.0/en/sys-schema-prerequisites.html
Enabling all the instruments and consumers just mentioned has a performance impact, so it is preferable to enable only the additional configuration you need. Before using the sys schema, the prerequisites described in this section must be satisfied. Because the sys schema provides an alternative means of accessing the Performance Schema, the Performance Schema must be enabled for the sys schema to ...
https://dev.mysql.com/doc/refman/8.0/en/sys-sys-config.html
Configuration changes made by updating this table persist across client sessions and server restarts. set_time The timestamp of the most recent modification to the row. (For example, the variable corresponding to the diagnostics.include_raw option ... This table contains sys schema configuration options, one row per ...
https://dev.mysql.com/doc/refman/8.0/en/mysqldumpslow.html
The MySQL slow query log contains information about queries that take a long time to execute (see Section 7.4.5, “The Slow Query Log”). mysqldumpslow parses MySQL slow query log files and summarizes their contents. Normally, mysqldumpslow ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-restart-info.html
Each entry in the table corresponds to a node restart status report in real time from a data node with the given node ID. Status numbers 13 and 14 define node failure states; 20 and 21 occur when no information about the restart of a given node is ...Only the most recent report for any given node is ...
https://dev.mysql.com/doc/refman/8.0/en/replication-features-shutdowns.html
Unclean shutdowns might produce problems, especially if the disk cache was not flushed to disk before the problem occurred: For transactions, the replica commits and then updates relay-log.info. Setting sync_relay_log_info to 0 causes no writes to ... It is safe to shut down a replication source server and restart it ...This may be changed with the CHANGE REPLICATION SOURCE TO statement ...
https://dev.mysql.com/doc/refman/8.0/en/adding-character-set.html
The proper procedure depends on whether the character set is simple or complex: If the character set does not need special string collating routines for sorting and does not need multibyte character support, it is simple. For example, greek and swe7 ... This section discusses the procedure for adding a character set to ...
https://dev.mysql.com/doc/refman/8.0/en/binlog-replication-configuration-overview.html
This section describes replication between MySQL servers based on the binary log file position method, where the MySQL instance operating as the source (where the database changes take place) writes updates and changes as “events” to the binary ...Replicas are configured to read the binary log from the source and to execute the events in the binary log on the replica's local ...
https://dev.mysql.com/doc/refman/8.0/en/charset-unicode-utf16.html
The utf16 character set is the ucs2 character set with an extension that enables encoding of supplementary characters: For a BMP character, utf16 and ucs2 have identical storage characteristics: same code values, same encoding, same length. This is ...For a supplementary character, utf16 has a special sequence for representing the character using 32 ...