disable cluster settings if WireGuard status cache is not enabled; add validation for cluster mode

cluster/cluster_api.py

@@ -101,6 +101,10 @@ def get_worker(request):
         success = False
 
     cluster_settings, created = ClusterSettings.objects.get_or_create(name='cluster_settings')
+    if not settings.WIREGUARD_STATUS_CACHE_ENABLED and cluster_settings.enabled:
+        cluster_settings.enabled = False
+        cluster_settings.save()
+
     if cluster_settings.enabled:
         if worker.error_status == 'cluster_disabled':
             worker.error_status = ''

cluster/forms.py

@@ -1,6 +1,7 @@
 from crispy_forms.helper import FormHelper
 from crispy_forms.layout import Column, HTML, Layout, Row, Submit
 from django import forms
+from django.conf import settings
 from django.core.exceptions import ValidationError
 from django.utils.translation import gettext_lazy as _
 
@@ -130,6 +131,10 @@ class ClusterSettingsForm(forms.ModelForm):
     def clean(self):
         cleaned_data = super().clean()
         primary_enable_wireguard = cleaned_data.get('primary_enable_wireguard')
+        cluster_enabled = cleaned_data.get('enabled')
+
+        if cluster_enabled and not settings.WIREGUARD_STATUS_CACHE_ENABLED:
+            raise ValidationError(_("Cluster mode requires WireGuard status cache to be enabled."))
 
         if not primary_enable_wireguard:
             raise ValidationError(_("Disabling WireGuard on the master server is currently not supported."))