Operator metrics

config/default/base/kustomization.yaml

@@ -14,10 +14,6 @@ resources:
 # [CERTMANAGER] Uncomment next line to enable cert-manager
 #- ../certmanager
 
-# This patch stop manager from emitting any metrics
-# For more context, refer to story #167092237
-patchesStrategicMerge:
-- manager_disable_metrics_patch.yaml
 images:
 - name: rabbitmqoperator/cluster-operator-dev
   newName: rabbitmqoperator/cluster-operator

config/manager/manager.yaml

@@ -51,4 +51,8 @@ spec:
             valueFrom:
               fieldRef:
                 fieldPath: metadata.namespace
+        ports:
+        - containerPort: 9782
+          name: metrics
+          protocol: TCP
       terminationGracePeriodSeconds: 10

docs/examples/prometheus/README.md

@@ -7,6 +7,11 @@ If you deployed the [Prometheus Operator](https://github.com/prometheus-operator
 kubectl apply -f rabbitmq-podmonitor.yaml
 ```
 
+Make Prometheus scrape the RabbitMQ Cluster Operator by:
+```shell
+kubectl apply -f rabbitmq-cluster-operator-podmonitor.yaml
+```
+
 Alternatively, if you deployed the Prometheus Operator via the [kube-prometheus-stack](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack) Helm chart,
 set the values in [kube-prometheus-stack-values.yaml.example](kube-prometheus-stack-values.yaml.example) when installing / upgrading the Helm chart.
 

docs/examples/prometheus/kube-prometheus-stack-values.yaml.example

@@ -9,3 +9,11 @@ prometheus:
          app.kubernetes.io/component: rabbitmq
      namespaceSelector:
        any: true
+   - name: rabbitmq-cluster-operator
+     podMetricsEndpoints:
+     - port: metrics
+     selector:
+       matchLabels:
+         app.kubernetes.io/component: rabbitmq-cluster-operator
+     namespaceSelector:
+       matchNames: [rabbitmq-system]

docs/examples/prometheus/rabbitmq-cluster-operator-podmonitor.yaml

@@ -0,0 +1,14 @@
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: rabbitmq-cluster-operator
+spec:
+  podMetricsEndpoints:
+  - port: metrics
+  selector:
+    matchLabels:
+      app.kubernetes.io/component: rabbitmq-cluster-operator
+  namespaceSelector:
+    matchNames:
+    - rabbitmq-system