terraform: extend kubernetes a little bit

kubernetes-kvm-terraform/kubernetes-deployments/kube-prometheus-values.yaml

@@ -0,0 +1,45 @@
+prometheus:
+  prometheusSpec:
+    retention: 60d
+    storageSpec:
+      volumeClaimTemplate:
+        spec:
+          # storageClassName: <your-storage-class>
+          accessModes: ["ReadWriteOnce"]
+          resources:
+            requests:
+              storage: 20Gi
+    resources:
+      requests:
+        memory: 0.5Gi
+        cpu: 500m
+      limits:
+        memory: 4Gi
+        cpu: 2
+    # Critical for ServiceMonitor discovery across namespaces
+    serviceMonitorSelectorNilUsesHelmValues: false
+    podMonitorSelectorNilUsesHelmValues: false
+    ruleSelectorNilUsesHelmValues: false
+
+alertmanager:
+  alertmanagerSpec:
+    storage:
+      volumeClaimTemplate:
+        spec:
+          # storageClassName: <your-storage-class>
+          accessModes: ["ReadWriteOnce"]
+          resources:
+            requests:
+              storage: 3Gi
+
+grafana:
+  persistence:
+    enabled: true
+    # storageClassName: <your-storage-class>
+    size: 10Gi
+  adminPassword: admin
+
+prometheusOperator:
+  admissionWebhooks:
+    certManager:
+      enabled: false  # Set true if using cert-manager