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https://dev.mysql.com/doc/refman/8.0/en/mysqladmin.html
Slow queries The number of queries that have taken more than long_query_time seconds. --connect-timeout=value Command-Line Format --connect-timeout=value Type Numeric Default Value 43200 The maximum number of seconds before connection timeout. You ...
https://dev.mysql.com/doc/refman/8.0/en/change-master-to.html
MASTER_CONNECT_RETRY = interval Specifies the interval in seconds between the reconnection attempts that the replica makes after the connection to the source times out. If both the default settings are used, the replica waits 60 seconds between ...] ...
https://dev.mysql.com/doc/refman/8.0/en/change-replication-source-to.html
SOURCE_CONNECT_RETRY = interval Specifies the interval in seconds between the reconnection attempts that the replica makes after the connection to the source times out. If both the default settings are used, the replica waits 60 seconds between ...] ...
https://dev.mysql.com/doc/refman/8.0/en/faqs-replication.html
How do I know how late a replica is compared to the source? In other words, how do I know the date of the last statement replicated by the replica? Check the Seconds_Behind_Master column in the output from SHOW REPLICA | SLAVE STATUS. (This is why ... In the following section, we provide answers to questions that are most frequently asked about MySQL ...
https://dev.mysql.com/doc/refman/8.0/en/innodb-buffer-pool.html
Per second averages provided in InnoDB Standard Monitor output are based on the elapsed time since InnoDB Standard Monitor output was last printed. youngs/s The per second average of accesses to old pages in the buffer pool LRU list that have ...
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-ndbinfo-disk-write-speed-aggregate-node.html
The disk_write_speed_aggregate_node table provides aggregated information per node about the speed of disk writes during LCP, backup, and restore operations.
https://dev.mysql.com/doc/refman/8.0/en/mysql-cluster-params-ndbd.html
KeepAliveSendInterval: Time between keep-alive signals on links between data nodes, in milliseconds. MaxDiskWriteSpeed: Maximum number of bytes per second that can be written by LCP and backup when no restarts are ongoing. The listings in this ...
https://dev.mysql.com/doc/refman/8.0/en/built-in-function-reference.html
The following table lists each built-in (native) function and operator and provides a short description of each one. For a table listing functions that are loadable at runtime, see Section 14.2, “Loadable Function Reference”. ->> Return value ...
https://dev.mysql.com/doc/refman/8.0/en/clone-plugin-options-variables.html
clone_ddl_timeout Command-Line Format --clone-ddl-timeout Introduced 8.0.17 System Variable clone_ddl_timeout Scope Global Dynamic Yes SET_VAR Hint Applies No Type Integer Default Value 300 Minimum Value 0 Maximum Value 2592000 Unit seconds The time ... This section describes the system variables that control operation of the clone ...
https://dev.mysql.com/doc/refman/8.0/en/group-replication-responses-failure-expel.html
There is an initial 5-second detection period before a Group Replication group member creates a suspicion of another member (or of itself). group_replication_member_expel_timeout specifies the period of time in seconds, called the expel timeout, ...