[occm] Make hostNetwork configurable in the Helm chart

Author: zwindler

charts/openstack-cloud-controller-manager/templates/daemonset.yaml

@@ -109,8 +109,8 @@ spec:
       {{- if .Values.extraInitContainers }}
       initContainers: {{ toYaml .Values.extraInitContainers | nindent 6 }}
       {{- end }}
-      dnsPolicy: {{ .Values.dnsPolicy }}
-      hostNetwork: true
+      hostNetwork: {{ .Values.hostNetwork }}
+      dnsPolicy: {{ if and .Values.hostNetwork (eq .Values.dnsPolicy "ClusterFirst") }}ClusterFirstWithHostNet{{ else }}{{ .Values.dnsPolicy }}{{ end }}
       {{- if .Values.priorityClassName }}
       priorityClassName: {{ .Values.priorityClassName }}
       {{- end }}

charts/openstack-cloud-controller-manager/values.yaml

@@ -46,6 +46,12 @@ livenessProbe: {}
 # Set readinessProbe in the same way like livenessProbe
 readinessProbe: {}
 
+# Use host network for the controller pods. This is required if the controller
+# needs to access the node network (e.g. for cloud-node or route controllers),
+# but can be disabled if you only need specific controllers like the service
+# (Octavia LB) controller.
+hostNetwork: true
+
 dnsPolicy: ClusterFirst
 
 # Set nodeSelector where the controller should run, i.e. controlplane nodes