How to disable startup log?

[slashmili]

Hi, I'm trying to find a way to disable the log that prints out on the producer start up

11:52:26.237 [notice]     :supervisor: {:local, :brod_sup}
    :started: [
  pid: #PID<0.369.0>,
  id: :my_producer,
  mfargs: {:brod_client, :start_link,
   [
     [localhost: 9092],
     :my_producer,
     [endpoints: [localhost: 9092], auto_start_producers: true]
   ]},
  restart_type: {:permanent, 10},
  shutdown: 5000,
  child_type: :worker
]

Do you know where does it happen? Went through all codes but couldn't find which module is emitting that.

The reason I don't disable notice log is because I still want to get info logs.

This startup log was not an issue so far. However since I moved to OTP 25 and using :public_key.cacerts_get() as in

             ssl_options: [
                verify: :verify_peer,
                cacerts: :public_key.cacerts_get(),
                customize_hostname_check: [
                  match_fun: :public_key.pkix_verify_hostname_match_fun(:https)
                ]
              ]

I see 160 lines of logs in my logs

Update:

Seems like it's from supervisor3.

As supervisor3 is mainly used by brod, would you mind if we change supervisor3?

To either not log the progress or log it with debug severity

[zmstone]

Hi @slashmili
I'm OK changing the logs to debug level (and maybe call logger module directly).
PR is welcome.

[zmstone]

BTW, have you tried this logger filter: https://www.erlang.org/doc/man/logger_filters.html#progress-2

[JamieMaclean]

+1 on this solution. We have a similar issue where we have to pass password in our ssl options, which means we are logging our password in plain text. Downgrading to debug would solve this for us. I created the PR linked above in the supervisor3 repo.