Fix #417 Add serviceMonitor template for the telegraf chart

charts/telegraf/templates/_helpers.tpl

@@ -706,6 +706,17 @@ Create the name of the service account to use
 {{- end -}}
 {{- end -}}
 
+{{/*
+Create the name of the service monitor to use
+*/}}
+{{- define "telegraf.serviceMonitorName" -}}
+{{- if .Values.serviceMonitor.create -}}
+    {{ default (include "telegraf.fullname" .) .Values.serviceMonitor.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceMonitor.name }}
+{{- end -}}
+{{- end -}}
+
 {{/*
 Get health configuration
 */}}

charts/telegraf/templates/servicemonitor.yaml

@@ -0,0 +1,22 @@
+{{- if .Values.serviceMonitor.create }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ template "telegraf.serviceMonitorName" . }}
+  labels:
+    {{- include "telegraf.labels" . | nindent 4 }}
+  {{- if .Values.serviceMonitor.annotations }}
+  annotations:
+    {{- toYaml .Values.serviceMonitor.annotations | nindent 4 }}
+  {{- end }}
+spec:
+  selector:
+    matchLabels:
+    {{- include "telegraf.labels" . | nindent 6 }}
+  namespaceSelector:
+    matchNames:
+    - {{ .Release.Namespace }}
+  endpoints:
+    - port: prometheus-client
+      path: /metrics
+{{- end }}

charts/telegraf/values.yaml

@@ -109,6 +109,15 @@ serviceAccount:
   name:
   # Annotations for the ServiceAccount
   annotations: {}
+
+serviceMonitor:
+  # Specifies whether a ServiceMonitor should be created
+  create: false
+  # The name of the ServiceMonitor to use.
+  # If not set and create is true, a name is generated using the fullname template
+  name:
+  # Annotations for the ServiceMonitor
+  annotations: {}
 ## Exposed telegraf configuration
 ## For full list of possible values see `/docs/all-config-values.yaml` and `/docs/all-config-values.toml`
 ## ref: https://docs.influxdata.com/telegraf/v1.1/administration/configuration/