ashb commented on a change in pull request #7923: Get Airflow Variables from
Environment Variables
URL: https://github.com/apache/airflow/pull/7923#discussion_r399639963
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File path: docs/concepts.rst
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@@ -687,6 +687,34 @@ or if you need to deserialize a json object from the
variable :
echo {{ var.json.<variable_name> }}
+Storing Variables in Environment Variables
+------------------------------------------
+
+Airflow Variables can also be created and managed using Environment Variables.
The environment variable
+naming convention is ``AIRFLOW_VAR_<variable_name>``, all uppercase.
+So if your variable key is ``FOO`` then the variable name should be
``AIRFLOW_VAR_FOO``.
+
+For example,
+
+.. code:: bash
+
+ export AIRFLOW_VAR_FOO=BAR
+
+ # To use JSON, store them as JSON strings
+ export AIRFLOW_VAR_FOO_JSON='{"hello":"world"}'
Review comment:
This makes it look like the _JSON suffix on the name is important, but it's
not.
Let's change this example name
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