Why do all my loggers start auto-disabled?

[Vinay Sajip]

Calling fileConfig() disables any loggers existing at the time of the
call. Make sure you call fileConfig() before instantiating any
loggers; after that you can instantiate as many as you like, and they
will all be enabled. Make sure you don't call fileConfig() again, as
in that call all loggers which are not named in the configuration will
be disabled.

The reason why fileConfig() disables existing loggers is that it was
designed as a one-off configuration (which completely replaces any
existing configuration with that specified in the config file) - not
as an incremental configurator.

Best regards,

Vinay Sajip