rook-ceph: create servicemonitor chart template

system-apps/rook-ceph/operator/templates/servicemonitor.yaml

@@ -0,0 +1,20 @@
+{{- if and .Values.monitoring.enabled -}}
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: rook-ceph-exporter
+  namespace: {{ .Release.Namespace }}
+spec:
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      app: rook-ceph-exporter
+      rook_cluster: {{ .Values.monitoring.cluster_name | default "rook-ceph" }}
+  endpoints:
+    - port: ceph-exporter-http-metrics
+      path: /metrics
+      interval: 10s
+{{- end }}