Add pihole-debian Helm values and patch script for DNS services

manifests/pihole-debian-patch.sh

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+#!/bin/bash
+# Usage: bash manifests/pihole-debian-patch.sh
+# Patches pihole-debian DNS services with externalIPs after helm upgrade
+set -e
+
+kubectl patch svc pihole-debian-dns-tcp -n pihole \
+  -p '{"spec":{"externalIPs":["192.168.7.183"]}}'
+
+kubectl patch svc pihole-debian-dns-udp -n pihole \
+  -p '{"spec":{"externalIPs":["192.168.7.183"]}}'
+
+echo "pihole-debian DNS services patched with externalIPs"

values/pihole-debian.yaml

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+# Pihole — secondary instance on Debian node
+# Pihole Helm values
+# Chart: mojo2600/pihole
+# Deploy:
+# helm upgrade --install pihole-debian mojo2600/pihole \
+#   --namespace pihole \
+#   -f values/pihole-debian.yaml
+
+replicaCount: 1
+
+nodeSelector:
+  node-role: storage
+
+image:
+  tag: "2024.07.0"
+
+serviceWeb:
+  type: ClusterIP
+
+serviceDns:
+  type: ClusterIP
+  port: 53
+  annotations:
+    kube-vip.io/loadbalancerIPs: 192.168.7.183
+
+probes:
+  liveness:
+    enabled: false
+  readiness:
+    enabled: false
+
+adminPassword: "changeme"
+
+extraEnvVars:
+  PIHOLE_DNS_1: "1.1.1.1"
+  PIHOLE_DNS_2: "8.8.8.8"
+
+dnsmasq:
+  customDnsEntries:
+    - address=/gitea.home.arpa/192.168.7.77
+    - address=/pihole.home.arpa/192.168.7.77
+    - address=/home.arpa/192.168.7.77
+    - address=/dashy.home.arpa/192.168.7.77
+    - address=/jellyfin.home.arpa/192.168.7.77
+    - address=/qbittorrent.home.arpa/192.168.7.77
+    - address=/jdownloader.home.arpa/192.168.7.77
+    - address=/glances.home.arpa/192.168.7.77
+    - address=/glances-debian.home.arpa/192.168.7.77
+    - address=/watch-party.nik4nao.com/192.168.7.77
+
+persistentVolumeClaim:
+  enabled: true
+  storageClass: local-path
+  size: 500Mi