[kube-state-metrics] Allow configuration of DNS for deployments (#5528)

Signed-off-by: James Bach <[email protected]>

Author: jalev

Diff for: charts/kube-state-metrics/Chart.yaml

@@ -7,7 +7,7 @@ keywords:
   - prometheus
   - kubernetes
 type: application
-version: 5.31.1
+version: 5.31.2
 # renovate: github-releases=kubernetes/kube-state-metrics
 appVersion: 2.15.0
 home: https://github.com/kubernetes/kube-state-metrics/

Diff for: charts/kube-state-metrics/templates/deployment.yaml

@@ -52,6 +52,10 @@ spec:
       initContainers:
       {{- toYaml . | nindent 6 }}
       {{- end }}
+      {{- if .Values.dnsConfig }}
+      dnsConfig: {{ toYaml .Values.dnsConfig | nindent 8 }}
+      {{- end }}
+      dnsPolicy: {{ .Values.dnsPolicy }}
       containers:
       {{- $servicePort := ternary 9090 (.Values.service.port | default 8080) .Values.kubeRBACProxy.enabled}}
       {{- $telemetryPort := ternary 9091 (.Values.selfMonitor.telemetryPort | default 8081) .Values.kubeRBACProxy.enabled}}

Diff for: charts/kube-state-metrics/values.yaml

@@ -519,6 +519,14 @@ initContainers: []
   # - name: crd-sidecar
   #   image: kiwigrid/k8s-sidecar:latest
 
+## dnsPolicy allows to change the default DNS configuration for the pod
+## Ref: https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy
+dnsPolicy: ClusterFirst
+
+## dnsConfig allows setting up specific DNS configuration for the pod
+## Ref: https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-dns-config
+dnsConfig: {}
+
 ## Settings for startup, liveness and readiness probes
 ## Ref: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
 ##