chore: Support Hostnetwork

Author: kahirokunn

helm/templates/deployment.yaml

@@ -131,8 +131,13 @@ spec:
       priorityClassName: {{ .Values.deployment.priorityClassName }}
       {{ end -}}
       hostIPC: false
-      hostNetwork: false
       hostPID: false
+      {{ if .Values.hostNetwork }}
+      hostNetwork: true
+      dnsPolicy: ClusterFirstWithHostNet
+      {{ else }}
+      hostNetwork: false
+      {{ end }}
       {{ if .Values.aws.credentials.secretName -}}
       volumes:
         - name: {{ .Values.aws.credentials.secretName }}

helm/values.yaml

@@ -28,6 +28,7 @@ deployment:
   # Which priorityClassName to set?
   # See: https://kubernetes.io/docs/concepts/scheduling-eviction/pod-priority-preemption/#pod-priority
   priorityClassName: ""
+  hostNetwork: false
 
 # If "installScope: cluster" then these labels will be applied to ClusterRole
 role: