feat(chart): support configuring dnsConfig

Signed-off-by: Stevo Slavic <sslavic@gmail.com>

charts/cluster-autoscaler/Chart.yaml

@@ -11,4 +11,4 @@ name: cluster-autoscaler
 sources:
   - https://github.com/kubernetes/autoscaler/tree/master/cluster-autoscaler
 type: application
-version: 9.48.0
+version: 9.49.0

charts/cluster-autoscaler/README.md

@@ -463,6 +463,7 @@ vpa:
 | containerSecurityContext | object | `{}` | [Security context for container](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/) |
 | customArgs | list | `[]` | Additional custom container arguments. Refer to https://github.com/kubernetes/autoscaler/blob/master/cluster-autoscaler/FAQ.md#what-are-the-parameters-to-ca for the full list of cluster autoscaler parameters and their default values. List of arguments as strings. |
 | deployment.annotations | object | `{}` | Annotations to add to the Deployment object. |
+| dnsConfig | object | `{}` | [Pod's DNS Config](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-dns-config) |
 | dnsPolicy | string | `"ClusterFirst"` | Defaults to `ClusterFirst`. Valid values are: `ClusterFirstWithHostNet`, `ClusterFirst`, `Default` or `None`. If autoscaler does not depend on cluster DNS, recommended to set this to `Default`. |
 | envFromConfigMap | string | `""` | ConfigMap name to use as envFrom. |
 | envFromSecret | string | `""` | Secret name to use as envFrom. |

charts/cluster-autoscaler/templates/deployment.yaml

@@ -40,6 +40,10 @@ spec:
       {{- if .Values.priorityClassName }}
       priorityClassName: "{{ .Values.priorityClassName }}"
       {{- end }}
+      {{- with .Values.dnsConfig }}
+      dnsConfig:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
       {{- if .Values.dnsPolicy }}
       dnsPolicy: "{{ .Values.dnsPolicy }}"
       {{- end }}

charts/cluster-autoscaler/values.yaml

@@ -170,6 +170,18 @@ deployment:
   # deployment.annotations -- Annotations to add to the Deployment object.
   annotations: {}
 
+# dnsConfig -- [Pod's DNS Config](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-dns-config)
+dnsConfig: {}
+  # nameservers:
+  #   - 1.2.3.4
+  # searches:
+  #   - ns1.svc.cluster-domain.example
+  #   - my.dns.search.suffix
+  # options:
+  #   - name: ndots
+  #     value: "2"
+  #   - name: edns0
+
 # dnsPolicy -- Defaults to `ClusterFirst`. Valid values are:
 # `ClusterFirstWithHostNet`, `ClusterFirst`, `Default` or `None`.
 # If autoscaler does not depend on cluster DNS, recommended to set this to `Default`.