I enabled debug logging and get only information messages in production.log. I touched restart.txt several times and still the logging is not taking effect.

:logging:
  :level: debug
  :production:
    :type: file
    :layout: pattern

# Individual logging types can be toggled on/off here
:loggers:
  :app:
    :enabled: true
  :sql:
    :enabled: true

2018-07-06T09:37:16 [I|app|] Started GET "/node/foreman-test.DOMAIN?format=yml" for 10.20.0.26 at 2018-07-06 09:37:16 -0400
2018-07-06T09:37:16 [I|app|ec21f] Processing by HostsController#externalNodes as YML
2018-07-06T09:37:16 [I|app|ec21f]   Parameters: {"name"=>"foreman-test.DOMAIN"}
2018-07-06T09:37:16 [I|app|ec21f] Current user: foreman_api_admin (administrator)
2018-07-06T09:37:17 [I|app|ec21f]   Rendering text template
2018-07-06T09:37:17 [I|app|ec21f]   Rendered text template (0.0ms)
2018-07-06T09:37:17 [I|app|ec21f] Completed 200 OK in 1467ms (Views: 1.2ms | ActiveRecord: 867.0ms)