29.12.21.1 The setup_loggers Table

The setup_loggers table lists the registered loggers and their logging level:

mysql>  select * from performance_schema.setup_loggers;
+------------------------+-------+-------------------------+
| NAME                   | LEVEL | DESCRIPTION             |
+------------------------+-------+-------------------------+
| logger/sql/error_log   | info  | MySQL error logger      |
| logger/sql/slow_log    | info  | MySQL slow query logger |
| logger/sql/general_log | info  | MySQL general logger    |
+------------------------+-------+-------------------------+

• NAME: The name of the logger.

  This can be one of the following:

  • logger/sql/error_log

  • logger/sql/general_log

    The General log does not have a log level. All logs are instrumented using INFO. It is also independent of the existing configuration. For example, if log_output or general_log is disabled, general OpenTelemetry logging continues.

  • logger/sql/slow_log

    The Slow Query log does not have a log level. All logs are instrumented using WARN. It is also independent of the existing configuration. For example, if log_output or slow_query_log is disabled, Slow Query OpenTelemetry logging continues. Similarly, on replicas, if log_slow_replica_statements is disabled, Slow query OpenTelemetry logging continues on the replica.

• LEVEL: The log level. This can be set to one of the following values:

  • none

  • error

  • warn

  • info

  • debug

• DESCRIPTION: A text description of the logger.