[kube-prometheus-stack] Add support for relabelings and metricRelabelings

charts/kube-prometheus-stack/Chart.yaml

@@ -21,7 +21,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 49.1.0
+version: 49.2.0
 appVersion: v0.67.1
 kubeVersion: ">=1.16.0-0"
 home: https://github.com/prometheus-operator/kube-prometheus

charts/kube-prometheus-stack/templates/prometheus/servicemonitors.yaml

@@ -36,4 +36,12 @@ items:
 {{ toYaml .podTargetLabels | indent 8 }}
     {{- end }}
 {{- end }}
+    {{- if .metricRelabelings }}
+      metricRelabelings:
+{{ toYaml .metricRelabelings | indent 8 }}
+    {{- end }}
+    {{- if .relabelings }}
+      relabelings:
+{{ toYaml .relabelings | indent 8 }}
+    {{- end }}
 {{- end }}

charts/kube-prometheus-stack/values.yaml

@@ -3585,6 +3585,25 @@ prometheus:
           ##
           # serverName: ""
 
+    ## MetricRelabelConfigs to apply to samples after scraping, but before ingestion.
+    ## ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#relabelconfig
+    ##
+    # metricRelabelings: []
+    # - action: keep
+    #   regex: 'kube_(daemonset|deployment|pod|namespace|node|statefulset).+'
+    #   sourceLabels: [__name__]
+
+    ## RelabelConfigs to apply to samples before scraping
+    ## ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api.md#relabelconfig
+    ##
+    # relabelings: []
+    # - sourceLabels: [__meta_kubernetes_pod_node_name]
+    #   separator: ;
+    #   regex: ^(.*)$
+    #   targetLabel: nodename
+    #   replacement: $1
+    #   action: replace
+
   additionalPodMonitors: []
   ## Name of the PodMonitor to create
   ##