[stable/fluent-bit] Enabling dnsConfig option in the Chart (#22419)

Signed-off-by: Nick Vladiceanu <vladiceanu.n@gmail.com>

stable/fluent-bit/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: fluent-bit
-version: 2.8.13
+version: 2.8.14
 appVersion: 1.3.7
 description: Fast and Lightweight Log/Data Forwarder for Linux, BSD and OSX
 keywords:

stable/fluent-bit/README.md

@@ -150,6 +150,7 @@ The following table lists the configurable parameters of the Fluent-Bit chart an
 | `podSecurityContext`               | [Security settings for a pod](https://kubernetes.io/docs/concepts/policy/security-context)       | `{}` |
 | `hostNetwork`                      | Use host's network                         | `false`                                           |
 | `dnsPolicy`                        | Specifies the dnsPolicy to use             | `ClusterFirst`                                    |
+| `dnsConfig`                        | Specifies the custom dnsConfig to use      | `NULL`                                            |
 | `priorityClassName`                | Specifies the priorityClassName to use     | `NULL`                                            |
 | `tolerations`                      | Optional daemonset tolerations             | `NULL`                                            |
 | `nodeSelector`                     | Node labels for fluent-bit pod assignment  | `NULL`                                            |

stable/fluent-bit/templates/daemonset.yaml

@@ -44,6 +44,10 @@ spec:
 {{- end }}
       hostNetwork: {{ .Values.hostNetwork }}
       dnsPolicy: {{ .Values.dnsPolicy }}
+{{- if .Values.dnsConfig }}
+      dnsConfig:
+{{ toYaml .Values.dnsConfig | indent 8 }}
+{{- end }}
       serviceAccountName: {{ template "fluent-bit.serviceAccountName" . }}
       containers:
       - name: fluent-bit

stable/fluent-bit/values.yaml

@@ -208,6 +208,19 @@ hostNetwork: false
 # Consider switching to 'ClusterFirstWithHostNet' when 'hostNetwork' is enabled.
 dnsPolicy: ClusterFirst
 
+# Optional field that allows more control on the DNS settings for the pod.
+# Ref: 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
+
 ## Node tolerations for fluent-bit scheduling to nodes with taints
 ## Ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
 ##