[prometheus-node-exporter] Add the ability to define a proxyUrl via values (#1091)

* Add the ability to define a proxyUrl via values

Signed-off-by: Boris Petersen <boris.petersen@idealo.de>

* Add descriptive comment

Signed-off-by: Boris Petersen <boris.petersen@idealo.de>

charts/prometheus-node-exporter/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v1
 appVersion: 1.1.2
 description: A Helm chart for prometheus node-exporter
 name: prometheus-node-exporter
-version: 1.18.1
+version: 1.18.2
 home: https://github.com/prometheus/node_exporter/
 sources:
 - https://github.com/prometheus/node_exporter/

charts/prometheus-node-exporter/templates/monitor.yaml

@@ -22,6 +22,9 @@ spec:
       {{- if $.Values.prometheus.monitor.tlsConfig }}
       tlsConfig: {{ toYaml $.Values.prometheus.monitor.tlsConfig | nindent 8 }}
       {{- end }}
+      {{- if .Values.prometheus.monitor.proxyUrl }}
+      proxyUrl: {{ .Values.prometheus.monitor.proxyUrl}}
+      {{- end }}
       {{- if .Values.prometheus.monitor.scrapeTimeout }}
       scrapeTimeout: {{ .Values.prometheus.monitor.scrapeTimeout }}
       {{- end }}

charts/prometheus-node-exporter/values.yaml

@@ -24,6 +24,10 @@ prometheus:
     bearerTokenFile:
     tlsConfig: {}
 
+    ## proxyUrl: URL of a proxy that should be used for scraping.
+    ##
+    proxyUrl: ""
+
     relabelings: []
     scrapeTimeout: 10s