Know how to spot an HA environment.

awx/main/ha.py

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+# Copyright (c) 2014 Ansible, Inc.
+# All Rights Reserved.
+
+from django.conf import settings
+
+from awx.main.models import Instance
+
+
+def is_ha_environment():
+    """Return True if this is an HA environment, and False
+    otherwise.
+    """
+    # If there are two or more instances, then we are in an HA environment.
+    if Instance.objects.count() > 1:
+        return True
+
+    # If the database is not local, then we are in an HA environment.
+    host = settings.DATABASES['default'].get('host', 'localhost')
+    if host and host.lower() not in ('127.0.0.1', 'localhost'):
+        return True
+
+    # We are not in an HA environment.
+    return False