Closes #4160: Link to full database configuration parameters in configuration docs

docs/configuration/required-settings.md

@@ -21,7 +21,7 @@ NetBox requires access to a PostgreSQL database service to store data. This serv
 * `PASSWORD` - PostgreSQL password
 * `HOST` - Name or IP address of the database server (use `localhost` if running locally)
 * `PORT` - TCP port of the PostgreSQL service; leave blank for default port (5432)
-* `CONN_MAX_AGE` - Number in seconds for Netbox to keep database connections open. 150-300 seconds is typically a good starting point ([more info](https://docs.djangoproject.com/en/stable/ref/databases/#persistent-connections)).
+* `CONN_MAX_AGE` - Lifetime of a [persistent database connection](https://docs.djangoproject.com/en/stable/ref/databases/#persistent-connections), in seconds (150-300 is recommended)
 
 Example:
 
@@ -36,6 +36,9 @@ DATABASE = {
 }
 ```
 
+!!! note
+    NetBox supports all PostgreSQL database options supported by the underlying Django framework. For a complete list of available parameters, please see [the Django documentation](https://docs.djangoproject.com/en/stable/ref/settings/#databases).
+
 ---
 
 ## REDIS

netbox/netbox/configuration.example.py

@@ -10,7 +10,8 @@
 # Example: ALLOWED_HOSTS = ['netbox.example.com', 'netbox.internal.local']
 ALLOWED_HOSTS = []
 
-# PostgreSQL database configuration.
+# PostgreSQL database configuration. See the Django documentation for a complete list of available parameters:
+#   https://docs.djangoproject.com/en/stable/ref/settings/#databases
 DATABASE = {
     'NAME': 'netbox',         # Database name
     'USER': '',               # PostgreSQL username