Closes #17051: Introduce the `ISOLATED_DEPLOYMENT` config parameter (#17067)

* Closes #17051: Introduce ISOLATED_DEPLOYMENT config parameter

* Revert omission of external footer links

docs/configuration/system.md

@@ -87,6 +87,17 @@ addresses (and [`DEBUG`](#debug) is true).
 
 ---
 
+## ISOLATED_DEPLOYMENT
+
+Default: False
+
+Set this configuration parameter to True for NetBox deployments which do not have Internet access. This will disable miscellaneous functionality which depends on access to the Internet.
+
+!!! note
+    If Internet access is available via a proxy, set [`HTTP_PROXIES`](#http_proxies) instead.
+
+---
+
 ## JINJA2_FILTERS
 
 Default: `{}`
@@ -143,7 +154,7 @@ LOGGING = {
 
 ## MEDIA_ROOT
 
-Default: $INSTALL_ROOT/netbox/media/
+Default: `$INSTALL_ROOT/netbox/media/`
 
 The file path to the location where media files (such as image attachments) are stored. By default, this is the `netbox/media/` directory within the base NetBox installation path.
 

netbox/core/plugins.py

@@ -107,6 +107,10 @@ def get_catalog_plugins():
     """
     session = requests.Session()
 
+    # Disable catalog fetching for isolated deployments
+    if settings.ISOLATED_DEPLOYMENT:
+        return {}
+
     def get_pages():
         # TODO: pagination is currently broken in API
         payload = {'page': '1', 'per_page': '50'}

netbox/extras/management/commands/housekeeping.py

@@ -93,7 +93,10 @@ class Command(BaseCommand):
         # Check for new releases (if enabled)
         if options['verbosity']:
             self.stdout.write("[*] Checking for latest release")
-        if settings.RELEASE_CHECK_URL:
+        if settings.ISOLATED_DEPLOYMENT:
+            if options['verbosity']:
+                self.stdout.write(f"\tSkipping: ISOLATED_DEPLOYMENT is enabled")
+        elif settings.RELEASE_CHECK_URL:
             headers = {
                 'Accept': 'application/vnd.github.v3+json',
             }

netbox/netbox/settings.py

@@ -112,6 +112,7 @@ FIELD_CHOICES = getattr(configuration, 'FIELD_CHOICES', {})
 FILE_UPLOAD_MAX_MEMORY_SIZE = getattr(configuration, 'FILE_UPLOAD_MAX_MEMORY_SIZE', 2621440)
 HTTP_PROXIES = getattr(configuration, 'HTTP_PROXIES', None)
 INTERNAL_IPS = getattr(configuration, 'INTERNAL_IPS', ('127.0.0.1', '::1'))
+ISOLATED_DEPLOYMENT = getattr(configuration, 'ISOLATED_DEPLOYMENT', False)
 JINJA2_FILTERS = getattr(configuration, 'JINJA2_FILTERS', {})
 LANGUAGE_CODE = getattr(configuration, 'DEFAULT_LANGUAGE', 'en-us')
 LANGUAGE_COOKIE_PATH = CSRF_COOKIE_PATH
@@ -578,7 +579,7 @@ CENSUS_PARAMS = {
     'python_version': sys.version.split()[0],
     'deployment_id': DEPLOYMENT_ID,
 }
-if CENSUS_REPORTING_ENABLED and not DEBUG and 'test' not in sys.argv:
+if CENSUS_REPORTING_ENABLED and not ISOLATED_DEPLOYMENT and not DEBUG and 'test' not in sys.argv:
     try:
         # Report anonymous census data
         requests.get(f'{CENSUS_URL}?{urlencode(CENSUS_PARAMS)}', timeout=3, proxies=HTTP_PROXIES)