Expose Prometheus Metrics Server with k8s Service

To let us able to scrape metrics from the Operator
e.g. with a ServiceMonitor we need to have a Service
which provides named port

close #61

Signed-off-by: Alex Szakaly <[email protected]>

Author: alex1989hu

Diff for: helm/install/Chart.yaml

@@ -4,5 +4,5 @@ description: Installer for PGO, the open source Postgres Operator from Crunchy D
 
 type: application
 # The version below should match the version on the PostgresCluster CRD
-version: 0.6.0
+version: 0.6.1
 appVersion: 5.2.0

Diff for: helm/install/templates/manager.yaml

@@ -40,6 +40,9 @@ spec:
         - name: CHECK_FOR_UPGRADES
           value: "false"
         {{- end }}
+        ports:
+        - containerPort: 8080
+          name: metrics
         securityContext:
           allowPrivilegeEscalation: false
           capabilities: { drop: [ALL] }

Diff for: helm/install/templates/service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    {{- include "install.labels" . | nindent 4 }}
+    {{- include "install.clusterLabels" . | nindent 4 }}
+  name: {{ .Chart.Name }}
+spec:
+  ports:
+  - name: metrics
+    port: 9090
+    protocol: TCP
+    targetPort: metrics
+  selector:
+    {{- include "install.clusterLabels" . | nindent 4 }}