Issue: Backend 120, Added LOG_LEVEL to list of backend environment variables. (#17)

* Added LOG_LEVEL to list of backend environment variables.

* Added more info about log levels

Co-authored-by: nlg <[email protected]>
Co-authored-by: Mads Svejstrup <[email protected]>

Author: 3 people

source/installation-guide/installation-guide.rst

@@ -227,6 +227,13 @@ OS2IoT-backend takes several environment variables as configuration, if these ar
 +-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
 | CHIRPSTACK_JWTSECRET          | Secret to generate JWT for Chirpstack                                                                | :code:`verysecret`                                                                      |
 +-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+| LOG_LEVEL                     | Minimum Log Level. Levels ordered from high to low are: 'log', 'error', 'warn', 'debug', 'verbose'   | :code:`debug`                                                                           |
++-------------------------------+------------------------------------------------------------------------------------------------------+-----------------------------------------------------------------------------------------+
+
+Logs levels
+"""""""""""""""
+Specifying a LOG_LEVEL makes sure that only logs with that level or higher are included. Using 'debug' or 'verbose' LOG_LEVEL in a production environment is not recommended.
+
 
 OS2IoT-frontend
 ^^^^^^^^^^^^^^^