[kube-prometheus-stack] add support for scrapeFailureLogFile (#5306)

* [kube-prometheus-stack] add support for scrapeFailureLogFile

Signed-off-by: Amos Shapira <amos.shapira@gmail.com>

* [kube-prometheus-stack] update version to catch up with parallel bump

Signed-off-by: Amos Shapira <amos.shapira@gmail.com>

* [kube-prometheus-stack] bump to version 69.2.3 to catch up with parallel bump

Signed-off-by: Amos Shapira <amos.shapira@gmail.com>

---------

Signed-off-by: Amos Shapira <amos.shapira@gmail.com>

Author: amosshapira

charts/kube-prometheus-stack/Chart.yaml

@@ -31,7 +31,7 @@ name: kube-prometheus-stack
 sources:
   - https://github.com/prometheus-community/helm-charts
   - https://github.com/prometheus-operator/kube-prometheus
-version: 69.2.2
+version: 69.2.3
 appVersion: v0.80.0
 kubeVersion: ">=1.19.0-0"
 home: https://github.com/prometheus-operator/kube-prometheus

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

@@ -118,6 +118,9 @@ spec:
   scrapeClasses:
     {{- tpl (toYaml . | nindent 4) $ }}
 {{- end }}
+{{- if .Values.prometheus.prometheusSpec.scrapeFailureLogFile }}
+  scrapeFailureLogFile: {{ .Values.prometheus.prometheusSpec.scrapeFailureLogFile }}
+{{- end }}
 {{- if .Values.prometheus.prometheusSpec.scrapeInterval }}
   scrapeInterval: {{ .Values.prometheus.prometheusSpec.scrapeInterval }}
 {{- end }}

charts/kube-prometheus-stack/values.yaml

@@ -3747,6 +3747,13 @@ prometheus:
     ## ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api-reference/api.md#monitoring.coreos.com/v1.Prometheus
     additionalArgs: []
 
+    ## File to which scrape failures are logged.
+    ## Reloading the configuration will reopen the file.
+    ## Defaults to empty (disabled)
+    ## ref: https://github.com/prometheus-operator/prometheus-operator/blob/main/Documentation/api-reference/api.md#monitoring.coreos.com/v1.Prometheus
+    ##
+    scrapeFailureLogFile: ""
+
     ## Interval between consecutive scrapes.
     ## Defaults to 30s.
     ## ref: https://github.com/prometheus-operator/prometheus-operator/blob/release-0.44/pkg/prometheus/promcfg.go#L180-L183