feat(helm): add hostNetwork, topologySpreadConstraint and clusterIP su… (#3389)

* add(helm): add hostNetwork, topologySpreadConstraint and clusterIP support

* parameters hostNetwork and clusterIP shouold not be templated if they are not explicitly used

---------

Signed-off-by: Stefan Roman <elegant.frog3113@fastmail.com>
Co-authored-by: Stefan Roman <elegant.frog3113@fastmail.com>

contrib/charts/dragonfly/templates/_pod.tpl

@@ -40,6 +40,13 @@ imagePullSecrets:
 securityContext:
   {{- toYaml . | trim | nindent 2 }}
 {{- end }}
+{{- if and (eq (typeOf .Values.hostNetwork) "bool") .Values.hostNetwork }}
+hostNetwork: true
+{{- end }}
+{{- with .Values.topologySpreadConstraints }}
+topologySpreadConstraints:
+  {{- toYaml . | trim | nindent 2 }}
+{{- end }}
 {{- with .Values.initContainers }}
 initContainers:
   {{- if eq (typeOf .) "string" }}

contrib/charts/dragonfly/templates/service.yaml

@@ -17,6 +17,9 @@ spec:
   {{- if and (eq .Values.service.type "LoadBalancer") (ne .Values.service.loadBalancerIP "") }}
   loadBalancerIP: {{ .Values.service.loadBalancerIP }}
   {{- end }}
+  {{- if and (eq .Values.service.type "ClusterIP") (ne .Values.service.clusterIP "") }}
+  clusterIP: {{ .Values.service.clusterIP }}
+  {{- end }}
   ports:
     - port: {{ .Values.service.port }}
       targetPort: dragonfly

contrib/charts/dragonfly/values.yaml

@@ -47,11 +47,16 @@ securityContext: {}
   # runAsNonRoot: true
   # runAsUser: 1000
 
+# -- Set hostNetwork for pod
+hostNetwork: false
+
 service:
   # -- Service type to provision. Can be NodePort, ClusterIP or LoadBalancer
   type: ClusterIP
   # -- Load balancer static ip to use when service type is set to LoadBalancer
   loadBalancerIP: ""
+  # -- Cluster IP address to assign to the service. Leave empty to auto-allocate
+  clusterIP: ""
   # -- Dragonfly service port
   port: 6379
   # -- Extra annotations for the service
@@ -207,3 +212,6 @@ tolerations: []
 
 # -- Affinity for pod assignment
 affinity: {}
+
+# -- Topology Spread Constraints for pod assignment
+topologySpreadConstraints: []