[stable/goldpinger] add ServiceMonitor (#18142)

Signed-off-by: azman0101 <azman0101@gmail.com>

stable/goldpinger/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: goldpinger
-version: 1.2.0
+version: 1.2.1
 appVersion: 1.5.0
 description: Goldpinger makes calls between its instances for visibility and alerting.
 home: https://github.com/bloomberg/goldpinger

stable/goldpinger/README.md

@@ -67,6 +67,11 @@ The following table lists the configurable parameters of the Goldpinger chart an
 | `resources`                    | CPU/Memory resource requests/limits          | `{}`                   |
 | `podSecurityPolicy.enabled`    | Enable podSecuritypolicy                     | `false`                |
 | `podSecurityPolicy.policyName` | PodSecurityPolicy Name                       | `unrestricted-psp`     |
+| `serviceMonitor.enabled`       | Set this to `true` to create ServiceMonitor for Prometheus operator | `false` | 
+| `serviceMonitor.additionalLabels` | Additional labels that can be used so ServiceMonitor will be discovered by Prometheus | `{}` |
+| `serviceMonitor.honorLabels` | honorLabels chooses the metric's labels on collisions with target labels. | `false`|
+| `serviceMonitor.namespace` | namespace where servicemonitor resource should be created | `the same namespace as goldpinger` |
+| `serviceMonitor.scrapeInterval` | interval between Prometheus scraping | `30s` |
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`. For example,
 

stable/goldpinger/templates/servicemonitor.yaml

@@ -0,0 +1,32 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ template "goldpinger.fullname" . }}
+  {{- if .Values.serviceMonitor.namespace }}
+  namespace: {{ .Values.serviceMonitor.namespace }}
+  {{- end }}
+  labels:
+    app.kubernetes.io/name: {{ include "goldpinger.name" . }}
+    helm.sh/chart: {{ include "goldpinger.chart" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/managed-by: {{ .Release.Service }}
+    {{- range $key, $value := .Values.serviceMonitor.selector }}
+    {{ $key }}: {{ $value | quote }}
+    {{- end }}
+spec:
+  endpoints:
+    - port: http
+      interval: {{ .Values.serviceMonitor.interval }}
+      {{- if .Values.serviceMonitor.honorLabels }}
+      honorLabels: true
+      {{- end }}
+  jobLabel: name
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ template "goldpinger.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}

stable/goldpinger/values.yaml

@@ -76,3 +76,11 @@ affinity: {}
 podSecurityPolicy:
   enabled: false
   policyName: unrestricted-psp
+
+serviceMonitor:
+  enabled: false
+  selector:
+    prometheus: "kube-prometheus"
+  namespace: "monitoring"
+  interval: 30s
+  # honorLabels: true