Search code examples
erlangerlang-otperlang-shell

Erlang logger config does not respond to log level setting info

After starting the Erlang shell with erl I create a logger like so

4> Config = #{config => #{file => "./info.log"}, level => info}.
#{config => #{file => "./info.log"},level => info}
5> logger:add_handler(myhandler, logger_std_h, Config).
ok

Then if I try to log a warning message by logger:warn("foo"). it shows up in the log file. But if I try an info message by logger:info("foo"). it does not. Even though the log level has explicitly been set to info in the Config.

Solution

  • erl needs to be started with a kernel parameter to do this.

    Starting it with erl -kernel logger_level info works as expected.