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• log_error_services 

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The components to enable for error logging. The variable may contain a list with 0, 1, or many elements. In the latter case, elements may be delimited by semicolon or (as of MySQL 8.0.12) comma, optionally followed by space. A given setting cannot use both semicolon and comma separators. Component order is significant because the server executes components in the order listed. Any loadable (not built in) component named in the log_error_services  value must first be installed with INSTALL COMPONENT . For more information, see Section 5.4.2.1, “Error Log Configuration” . 

• log_error_suppression_list 

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The log_error_suppression_list  system variable applies to events intended for the error log and specifies which events to suppress when they occur with a priority of WARNING  or INFORMATION . For example, if a particular type of warning is considered undesirable “noise”  in the error log because it occurs frequently but is not of interest, it can be suppressed. 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_suppression_list has no effect. 

The log_error_suppression_list  value may be the empty string for no suppression, or a list of one or more comma-separated values indicating the error codes to suppress. Error codes may be specified in symbolic or numeric form. A numeric code may be specified with or without the MY-  prefix. Leading zeros in the numeric part are not significant. Examples of permitted code formats: 

ER_SERVER_SHUTDOWN_COMPLETE MY-000031 000031 MY-31 

