Continuously updated, build their understanding of the parameters
[ MySQL ]
[ mysqld ]
log_warnings = 1 # alarm processing; [1] Default; [0] stands for no alarm information; [1] to the error log recording alarm information; [greater than 1] represents all types of alarm information, such as information about network failures and reconnections information is written to the error log. [A] used before 5.6, version 8.0.3 has been removed
log-error_verbosity = 3 # information processing; [8.0.3 Default Default] before the default is after 3,8.0.4 2 Parameters [value] is error message 1]; [2] error information and the alarm information; [3] as an error message, alarm information and the notification information;