[stable/elasticsearch-exporter] Make sampleLimit adjustable (#23454)

* - Make sampleLimit adjustable in es exporter

Signed-off-by: Mohamed Hazem <mhaz@hellofresh.com>

* - Bump feature instead of patch

Signed-off-by: Mohamed Hazem <mhaz@hellofresh.com>

stable/elasticsearch-exporter/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Elasticsearch stats exporter for Prometheus
 name: elasticsearch-exporter
-version: 3.6.0
+version: 3.7.0
 kubeVersion: ">=1.10.0-0"
 appVersion: 1.1.0
 home: https://github.com/justwatchcom/elasticsearch_exporter

stable/elasticsearch-exporter/README.md

@@ -103,6 +103,7 @@ Parameter | Description | Default
 `serviceMonitor.relabelings` | Relabel configuration for the metrics | `[]`
 `serviceMonitor.targetLabels` | Set of labels to transfer on the Kubernetes Service onto the target. | `[]`
 `serviceMonitor.metricRelabelings` | MetricRelabelConfigs to apply to samples before ingestion. | `[]`
+`serviceMonitor.sampleLimit` | Number of samples that will fail the scrape if exceeded | `0`
 `prometheusRule.enabled` | If true, a PrometheusRule CRD is created for a prometheus operator | `false`
 `prometheusRule.namespace` | If set, the PrometheusRule will be installed in a different namespace  | `""`
 `prometheusRule.labels` | Labels for prometheus operator | `{}`

stable/elasticsearch-exporter/templates/servicemonitor.yaml

@@ -47,4 +47,5 @@ spec:
     - {{ . }}
 {{- end }}
 {{- end }}
+  sampleLimit: {{ .Values.serviceMonitor.sampleLimit }}
 {{- end }}

stable/elasticsearch-exporter/values.yaml

@@ -173,6 +173,7 @@ serviceMonitor:
   relabelings: []
   targetLabels: []
   metricRelabelings: []
+  sampleLimit: 0
 
 prometheusRule:
   ## If true, a PrometheusRule CRD is created for a prometheus operator