Refactoring labels and add ServiceMonitor resource

charts/kubernetes-event-exporter/templates/_helpers.tpl

@@ -39,7 +39,12 @@ helm.sh/chart: {{ include "kubernetes-event-exporter.chart" . }}
 {{- if .Chart.AppVersion }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}
+app.kubernetes.io/component: metrics
+app.kubernetes.io/part-of: {{ template "kubernetes-event-exporter.name" . }}
 app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels }}
+{{- end }}
 {{- end }}
 
 {{/*

charts/kubernetes-event-exporter/templates/configmap.yaml

@@ -1,6 +1,8 @@
 apiVersion: v1
 kind: ConfigMap
 metadata:
+  labels:
+    {{- include "kubernetes-event-exporter.labels" . | nindent 4 }}
   name: {{ include "kubernetes-event-exporter.fullname" . }}-cfg
   namespace: {{ template "kubernetes-event-exporter.namespace" . }}
 data:

charts/kubernetes-event-exporter/templates/deployment.yaml

@@ -1,6 +1,8 @@
 apiVersion: apps/v1
 kind: Deployment
 metadata:
+  labels:
+    {{- include "kubernetes-event-exporter.labels" . | nindent 4 }}
   name: {{ include "kubernetes-event-exporter.fullname" . }}
   namespace: {{ include "kubernetes-event-exporter.namespace" . }}
 spec:
@@ -15,7 +17,7 @@ spec:
         {{- toYaml . | nindent 8 }}
       {{- end }}
       labels:
-        {{- include "kubernetes-event-exporter.selectorLabels" . | nindent 8 }}
+        {{- include "kubernetes-event-exporter.labels" . | nindent 8 }}
     spec:
       {{- with .Values.imagePullSecrets }}
       imagePullSecrets:

charts/kubernetes-event-exporter/templates/role.yaml

@@ -3,6 +3,8 @@
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRole
 metadata:
+  labels:
+    {{- include "kubernetes-event-exporter.labels" . | nindent 4 }}
   name: {{ include "kubernetes-event-exporter.fullname" . }}
 rules:
   - apiGroups: ["*"]

charts/kubernetes-event-exporter/templates/rolebinding.yaml

@@ -3,7 +3,9 @@
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:
-    name: {{ include "kubernetes-event-exporter.fullname" . }}
+  labels:
+    {{- include "kubernetes-event-exporter.labels" . | nindent 4 }}
+  name: {{ include "kubernetes-event-exporter.fullname" . }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: ClusterRole

charts/kubernetes-event-exporter/templates/serviceaccount.yaml

@@ -2,6 +2,8 @@
 apiVersion: v1
 kind: ServiceAccount
 metadata:
+  labels:
+    {{- include "kubernetes-event-exporter.labels" . | nindent 4 }}
   name: {{ include "kubernetes-event-exporter.serviceAccountName" . }}
   namespace: {{ include "kubernetes-event-exporter.namespace" . }}
 {{- end }}

charts/kubernetes-event-exporter/templates/servicemonitor.yaml

@@ -0,0 +1,25 @@
+{{- if .Values.serviceMonitor.enabled }}
+---
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    {{- include "kubernetes-event-exporter.labels" . | nindent 4 }}
+    {{- if .Values.serviceMonitor.additionalLabels }}
+    {{ toYaml .Values.serviceMonitor.additionalLabels }}
+    {{- end }}
+  name: {{ include "kubernetes-event-exporter.fullname" . }}
+  namespace: {{ include "kubernetes-event-exporter.namespace" . }}
+spec:
+  jobLabel: {{ template "kubernetes-event-exporter.fullname" . }}
+  endpoints:
+    - port: http
+      interval: {{ .Values.serviceMonitor.interval }}
+      scrapeTimeout: {{ .Values.serviceMonitor.scrapeTimeout }}
+      {{- if .Values.serviceMonitor.honorLabels }}
+      honorLabels: true
+      {{- end }}
+  selector:
+    matchLabels:
+      {{- include "kubernetes-event-exporter.selectorLabels" . | nindent 6 }}
+{{- end }}

charts/kubernetes-event-exporter/values.yaml

@@ -14,6 +14,10 @@ imagePullSecrets: []
 nameOverride: ""
 fullnameOverride: ""
 
+# -- Additional labels to add to all resources
+additionalLabels: {}
+  # app: kubernetes-events-exporter
+
 serviceAccount:
   # Specifies whether a service account should be created
   create: true
@@ -94,3 +98,23 @@ config: |
   receivers:
     - name: "dump"
       stdout: {}
+
+serviceMonitor:
+  # -- Enable this if you're using https://github.com/coreos/prometheus-operator
+  enabled: false
+  # -- Namespace to deploy the ServiceMonitor
+  namespace: ""
+
+  # -- Fallback to the prometheus default unless specified
+  interval: 30s
+
+  # -- Add custom labels to the ServiceMonitor resource
+  additionalLabels: {}
+    # prometheus: kube-prometheus
+
+  honorLabels: false
+
+  # -- Path to scrape metrics
+  path: /metrics
+  # -- Timeout for scrape metrics request
+  scrapeTimeout: 10s