[stable/prometheus-operator] Scraping kubelet for /metrics/resource/v1alpha1 (#22586)

[stable/prometheus-operator] Fixing the template

Signed-off-by: Mohsen <mohsen0@users.noreply.github.com>

stable/prometheus-operator/Chart.yaml

@@ -12,7 +12,7 @@ sources:
   - https://github.com/coreos/kube-prometheus
   - https://github.com/coreos/prometheus-operator
   - https://coreos.com/operators/prometheus
-version: 8.15.2
+version: 8.15.3
 appVersion: 0.38.1
 tillerVersion: ">=2.12.0"
 home: https://github.com/coreos/prometheus-operator

stable/prometheus-operator/README.md

@@ -561,6 +561,9 @@ For a full list of configurable values please refer to the [Grafana chart](https
 | `kubelet.serviceMonitor.probes` | Enable scraping `/metrics/probes` from kubelet's service | `true` |
 | `kubelet.serviceMonitor.probesMetricRelabelings` | The `metric_relabel_configs` for scraping kubelet. | `` |
 | `kubelet.serviceMonitor.probesRelabelings` | The `relabel_configs` for scraping kubelet. | `[{"sourceLabels":["__metrics_path__"], "targetLabel":"metrics_path"}]` |
+| `kubelet.serviceMonitor.resource` | Enable scraping `/metrics/resource/v1alpha1` from kubelet's service | `true` |
+| `kubelet.serviceMonitor.resourceMetricRelabelings` | The `metric_relabel_configs` for scraping `/metrics/resource/v1alpha1`. | `` |
+| `kubelet.serviceMonitor.resourceRelabelings` | The `relabel_configs` for scraping cAdvisor. | `[{"sourceLabels":["__metrics_path__"], "targetLabel":"metrics_path"}]` |
 | `kubelet.serviceMonitor.https` | Enable scraping of the kubelet over HTTPS. For more information, see https://github.com/coreos/prometheus-operator/issues/926 | `true` |
 | `kubelet.serviceMonitor.interval` | Scrape interval. If not set, the Prometheus default scrape interval is used | `nil` |
 | `kubelet.serviceMonitor.metricRelabelings` | The `metric_relabel_configs` for scraping kubelet. | `` |

stable/prometheus-operator/templates/exporters/kubelet/servicemonitor.yaml

@@ -69,6 +69,19 @@ spec:
     relabelings:
 {{ toYaml .Values.kubelet.serviceMonitor.probesRelabelings | indent 4 }}
 {{- end }}
+{{- end }}
+{{- if .Values.kubelet.serviceMonitor.resource }}
+  - port: https-metrics
+    scheme: https
+    path: {{ .Values.kubelet.serviceMonitor.resourcePath }}
+{{- if .Values.kubelet.serviceMonitor.resourceMetricRelabelings }}
+    metricRelabelings:
+{{ tpl (toYaml .Values.kubelet.serviceMonitor.resourceMetricRelabelings | indent 4) . }}
+{{- end }}
+{{- if .Values.kubelet.serviceMonitor.resourceRelabelings }}
+    relabelings:
+{{ toYaml .Values.kubelet.serviceMonitor.resourceRelabelings | indent 4 }}
+{{- end }}
 {{- end }}
   {{- else }}
   - port: http-metrics

stable/prometheus-operator/values.yaml

@@ -173,6 +173,8 @@ alertmanager:
   #         *Details:*
   #           {{ range .Labels.SortedPairs }} • *{{ .Name }}:* `{{ .Value }}`
   #           {{ end }}
+  #       {{ end }}
+  #       {{ end }}
 
   ingress:
     enabled: false
@@ -651,6 +653,11 @@ kubelet:
     ##
     probes: true
 
+    ## Enable scraping /metrics/resource from kubelet's service
+    ##
+    resource: true
+    # From kubernetes 1.18, /metrics/resource/v1alpha1 renamed to /metrics/resource
+    resourcePath: "/metrics/resource/v1alpha1"
     ## Metric relabellings to apply to samples before ingestion
     ##
     cAdvisorMetricRelabelings: []
@@ -702,6 +709,16 @@ kubelet:
     #   replacement: $1
     #   action: replace
 
+    resourceRelabelings:
+      - sourceLabels: [__metrics_path__]
+        targetLabel: metrics_path
+    # - sourceLabels: [__meta_kubernetes_pod_node_name]
+    #   separator: ;
+    #   regex: ^(.*)$
+    #   targetLabel: nodename
+    #   replacement: $1
+    #   action: replace
+
     metricRelabelings: []
     # - sourceLabels: [__name__, image]
     #   separator: ;