[GitHub] [airflow] mik-laj commented on a change in pull request #6660: [AIRFLOW-6065] Add Stackdriver Task Handler

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mik-laj commented on a change in pull request #6660: [AIRFLOW-6065] Add Stackdriver Task Handler
URL: https://github.com/apache/airflow/pull/6660#discussion_r363001658
 
 

 ##########
 File path: docs/howto/write-logs.rst
 ##########
 @@ -36,6 +36,38 @@ can not be found or accessed, local logs will be displayed. Note that logs
 are only sent to remote storage once a task is complete (including failure); In other words, remote logs for
 running tasks are unavailable (but local logs are available).
 
+.. _write-logs-advanced:
+
+Advanced configuration
+''''''''''''''''''''''
+
+Not all configuration options are available from the ``airflow.cfg`` file. Some configuration options require
+that the logging config class be overwritten. This can be done by ``logging_config_class`` option
+in ``airflow.cfg`` file. This option should specify the import path indicating to a configuration compatible with
+:class:`logging.config.dictConfig`. If your file is not importable, then you should set a  :any:``PYTHONPATH`` environment.
+
+Follow the steps below to enable custom logging config class:
+
+#. Start by setting environment variable to known directory e.g. ``~/airflow/``
+
+    .. code-block:: ini
+
+        export PYTHON_PATH=~/airflow/
+
+#. Create a directory to store the config file e.g. ``~/airflow/config``
+#. Create empty files called ``~/airflow/config/log_config.py`` and ``~/airflow/config/__init__.py``.
+#. Copy the contents of ``airflow/config_templates/airflow_local_settings.py`` into the ``log_config.py`` file created in ``Step 3``.
 
 Review comment:
   I updated the description

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