feat(redis-ha): add headless service and dual-stack support for HAProxy (#403)

* feat(redis-ha): add clusterIP, ipFamilyPolicy, and ipFamilies to HAProxy service

Adds three new optional fields to haproxy.service:
- clusterIP: set to "None" for a headless service returning pod IPs directly (#388)
- ipFamilyPolicy: configure IP family policy for dual-stack clusters (#366)
- ipFamilies: list of IP families (e.g. ["IPv4","IPv6"]) for dual-stack support (#366)

All fields default to empty/unset, leaving existing deployments unchanged.

Closes #388
Closes #366

https://claude.ai/code/session_015PLT3F82jivLQrxjfV9Hgg

* Update chart

Signed-off-by: Aaron Layfield <aaron.layfield@gmail.com>

---------

Signed-off-by: Aaron Layfield <aaron.layfield@gmail.com>
Co-authored-by: Claude <noreply@anthropic.com>

Author: DandyDeveloper

charts/redis-ha/Chart.yaml

@@ -5,7 +5,7 @@ keywords:
 - redis
 - keyvalue
 - database
-version: 4.35.10
+version: 4.36.0
 appVersion: 8.2.4
 description: This Helm chart provides a highly available Redis implementation with a master/slave configuration and uses Sentinel sidecars for failover management
 icon: https://img.icons8.com/external-tal-revivo-shadow-tal-revivo/24/external-redis-an-in-memory-data-structure-project-implementing-a-distributed-logo-shadow-tal-revivo.png

charts/redis-ha/templates/redis-haproxy-service.yaml

@@ -19,6 +19,15 @@ metadata:
   {{- end }}
 spec:
   type: {{ default "ClusterIP" .Values.haproxy.service.type }}
+  {{- if .Values.haproxy.service.clusterIP }}
+  clusterIP: {{ .Values.haproxy.service.clusterIP }}
+  {{- end }}
+  {{- if .Values.haproxy.service.ipFamilyPolicy }}
+  ipFamilyPolicy: {{ .Values.haproxy.service.ipFamilyPolicy }}
+  {{- end }}
+  {{- if .Values.haproxy.service.ipFamilies }}
+  ipFamilies: {{ toYaml .Values.haproxy.service.ipFamilies | nindent 2 }}
+  {{- end }}
   {{- if and (eq .Values.haproxy.service.type "LoadBalancer") .Values.haproxy.service.loadBalancerIP }}
   loadBalancerIP: {{ .Values.haproxy.service.loadBalancerIP }}
   {{- end }}

charts/redis-ha/values.yaml

@@ -182,6 +182,8 @@ haproxy:
   service:
     # -- HAProxy service type "ClusterIP", "LoadBalancer" or "NodePort"
     type: ClusterIP
+    # -- HAProxy service clusterIP. Set to "None" to create a headless service.
+    clusterIP: ""
     # -- (int) HAProxy service nodePort value (haproxy.service.type must be NodePort)
     nodePort: ~
     # -- HAProxy service loadbalancer IP
@@ -197,6 +199,10 @@ haproxy:
 
     # -- List of CIDR's allowed to connect to LoadBalancer
     loadBalancerSourceRanges: []
+    # -- HAProxy service IP family policy for dual-stack clusters
+    ipFamilyPolicy: ""
+    # -- HAProxy service IP families (e.g. ["IPv4", "IPv6"] for dual-stack)
+    ipFamilies: []
 
   # -- HAProxy serviceAccountName
   serviceAccountName: redis-sa