agent: accomodate dns policy config

Author: mawandm

charts/agent/Chart.yaml

@@ -2,8 +2,8 @@ apiVersion: v2
 name: cloud-agent
 description: A Helm chart for Ametnes Platform Agent
 type: application
-version: 0.3.16
-appVersion: 0.3.5083
+version: 0.3.17
+appVersion: 0.3.5132
 dependencies:
 - name: memcached
   version: 6.3.4

charts/agent/templates/agent-deploy.yaml

@@ -76,6 +76,13 @@ spec:
       {{- end }}
       securityContext:
         {{- toYaml .podSecurityContext | nindent 8 }}
+      {{- if .dnsPolicy }}
+      dnsPolicy: {{ .dnsPolicy }}
+      {{- end }}
+      {{- if .dnsConfig }}
+      dnsConfig:
+        {{- toYaml .dnsConfig | nindent 8 }}
+      {{- end }}
       initContainers:
         - name: wait-for-memcached
           image: busybox:1.35

charts/agent/values.yaml

@@ -13,7 +13,7 @@ agent:
   image:
     repository: ametnes/cloud-agent
     pullPolicy: IfNotPresent
-    tag: "0.3.5083"
+    tag: "0.3.5132"
 
   # imagePullSecrets:
   #   - name: pull-secret
@@ -22,6 +22,22 @@ agent:
   extraInitContainers: []
   extraVolumes: []
   extraVolumeMounts: []
+  # DNS policy and configuration for the agent pod.
+  # Set dnsPolicy to "None" with custom nameservers when the cluster DNS cannot resolve
+  # external domains (common in private/air-gapped k3s environments).
+  # dnsPolicy: "None"
+  # dnsConfig:
+  #   nameservers:
+  #     - 8.8.8.8
+  #     - 8.8.4.4
+  #   options:
+  #     - name: ndots
+  #       value: "2"
+  #   searches:
+  #     - svc.cluster.local
+  #     - cluster.local
+  dnsPolicy: ""
+  dnsConfig: {}
   tls:
     trust:
       enabled: false