Server System Variables 31 Symbolic values are preferable to numeric values for readability and portability. For information about the permitted error symbols and numbers, see MySQL 8.0 Error Message Reference. The effect of  log_error_suppression_list  combines with that of  log_error_verbosity . For additional information, see Section 5.4.2.5, “Priority-Based Error Log Filtering (log_filter_internal)” . • log_error_verbosity Command-Line Format --log-error-verbosity=# System Variable log_error_verbosity Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Integer Default Value 2 Minimum Value 1 Maximum Value 3 The  log_error_verbosity  system variable specifies the verbosity for handling events intended for the error log. This variable affects filtering performed by the  log_filter_internal  error log filter component, which is enabled by default (see Section 5.5.3, “Error Log Components” ). If log_filter_internal  is disabled,  log_error_verbosity  has no effect. Events intended for the error log have a priority of  ERROR ,  WARNING , or  INFORMATION . log_error_verbosity  controls verbosity based on which priorities to permit for messages written to the log, as shown in the following table. log_error_verbosity Value Permitted Message Priorities 1 ERROR 2 ERROR ,  WARNING 3 ERROR ,  WARNING ,  INFORMATION There is also a priority of  SYSTEM . System messages about non-error situations are printed to the error log regardless of the  log_error_verbosity  value. These messages include startup and shutdown messages, and some significant changes to settings. The effect of  log_error_verbosity  combines with that of  log_error_suppression_list . For additional information, see Section 5.4.2.5, “Priority-Based Error Log Filtering (log_filter_internal)” . • log_output Command-Line Format --log-output=name System Variable log_output Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Set 820