add fluxcd prometheus scrapping

services/fluxcd-system/README.md

@@ -23,3 +23,10 @@ helm upgrade flux-operator oci://ghcr.io/controlplaneio-fluxcd/charts/flux-opera
   --create-namespace
   kubectl apply -f ./deploy/fluxsystem.yaml
 ```
+
+**Allow prometheus scrapping:**
+
+```bash
+kubectl apply -f deploy/monitoring
+kubectl label ns flux-system prometheus-monitoring=enabled
+```

services/fluxcd-system/deploy/monitoring.yaml

@@ -0,0 +1,25 @@
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: flux-system
+  namespace: flux-system
+  labels:
+    app.kubernetes.io/part-of: flux
+    app.kubernetes.io/component: monitoring
+spec:
+  namespaceSelector:
+    matchNames:
+      - flux-system
+  selector:
+    matchExpressions:
+      - key: app
+        operator: In
+        values:
+          - helm-controller
+          - source-controller
+          - kustomize-controller
+          - notification-controller
+          - image-automation-controller
+          - image-reflector-controller
+  podMetricsEndpoints:
+    - port: http-prom

services/monitoring/deploy/prometheus/prometheus-agent.yaml

@@ -9,8 +9,13 @@ spec:
       prometheus-monitoring: enabled
 
   podMonitorSelector:
-    matchLabels:
-      release: prometheus
+    matchExpressions:
+      - key: release
+        operator: In
+        values: ["prometheus"]
+      - key: prometheus.io/scrape
+        operator: In
+        values: ["true"]
 
   serviceMonitorNamespaceSelector:
     matchLabels: