Improve comment about disabling KubeCPUOvercommit and KubeMemOvercommit alerts

helmfiles/values/prometheus.yaml.gotmpl

@@ -51,14 +51,17 @@ prometheusOperator:
 
 defaultRules:
   rules:
-    # Disable default rules to prevent KubeCPUOvercommit and KubeMemOvercommit
-    # always firing
+    # Currently OAS only focusses on a single-node cluster and therfore
+    # one `KubeCPUOvercommit` and one `KubeMemOvercommit` alerts always
+    # fire, because a single-node cluster is not considered a redundant setup.
+    # We disable the whole `kubernetesResources` alert bundle and install
+    # the other alerts which make sense from this bundle in the next step below
+    # (`additionalPrometheusRulesMap`).
+    # See https://open.greenhost.net/openappstack/openappstack/issues/368 for
+    # details.
     kubernetesResources: false
 
 additionalPrometheusRulesMap:
-   # We disable the creating of kubernetesResources rules above because
-   # of the always firing KubeCPUOvercommit and KubeMemOvercommit rules
-   # we need to manually add those which are fine here
   kubernetes-resources:
     groups:
     - name: kubernetes-resources