feat(node-exporter): permit to customize clusterIP

It permits to disable clusterIP which is not required to fetch metrics. On cluster with very huge node number always moving, it create a loadbalancer on each node using much memory and CPU due to watches from the service proxy
prometheus-community · Jun 7, 2024 · 698cb04 · 698cb04
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commit 698cb04
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diff --git a/charts/prometheus-node-exporter/templates/service.yaml b/charts/prometheus-node-exporter/templates/service.yaml
@@ -19,6 +19,9 @@ spec:
   externalTrafficPolicy: {{ .Values.service.externalTrafficPolicy }}
 {{- end }}
   type: {{ .Values.service.type }}
+{{- if eq .Values.service.type "ClusterIP" }}
+  clusterIP: "{{ .Values.service.clusterIP }}"
+{{- end }}
   ports:
     - port: {{ .Values.service.port }}
       {{- if ( and (eq .Values.service.type "NodePort" ) (not (empty .Values.service.nodePort)) ) }}

diff --git a/charts/prometheus-node-exporter/values.yaml b/charts/prometheus-node-exporter/values.yaml
@@ -87,6 +87,7 @@ kubeRBACProxy:
 service:
   enabled: true
   type: ClusterIP
+  clusterIP: ""
   port: 9100
   targetPort: 9100
   nodePort: