MySQL 9.3 Reference Manual Including MySQL NDB Cluster 9.3
Error log configuration normally includes one log filter component and one or more log sink components. For error log filtering, MySQL offers a choice of components:
log_filter_internal: This filter
component provides error log filtering based on log event
priority and error code, in combination with the
log_error_verbosity and
log_error_suppression_list
system variables. log_filter_internal is
built in and enabled by default. See
Section 7.4.2.5, “Priority-Based Error Log Filtering (log_filter_internal)”.
log_filter_dragnet: This filter component
provides error log filtering based on user-supplied rules,
in combination with the
dragnet.log_error_filter_rules
system variable. See
Section 7.4.2.6, “Rule-Based Error Log Filtering (log_filter_dragnet)”.