feat(k8s/external): add Home Assistant external routing via Traefik

kubernetes/app/external/homeassistant/ingress.yaml

@@ -0,0 +1,25 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: homeassistant
+  namespace: homeassistant
+  annotations:
+    cert-manager.io/cluster-issuer: letsencrypt
+    traefik.ingress.kubernetes.io/router.middlewares: homeassistant-security-headers@kubernetescrd
+spec:
+  tls:
+    - hosts:
+        - ${HOMEASSISTANT_HOST}
+      secretName: homeassistant-tls
+  rules:
+    - host: ${HOMEASSISTANT_HOST}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: homeassistant
+                port:
+                  number: 8123

kubernetes/app/external/homeassistant/middleware.yaml

@@ -0,0 +1,19 @@
+---
+apiVersion: traefik.io/v1alpha1
+kind: Middleware
+metadata:
+  name: security-headers
+  namespace: homeassistant
+spec:
+  headers:
+    sslRedirect: true
+    stsIncludeSubdomains: true
+    stsPreload: true
+    stsSeconds: 315360000
+    browserXssFilter: true
+    contentTypeNosniff: true
+    forceSTSHeader: true
+    frameDeny: true
+    customFrameOptionsValue: SAMEORIGIN
+    hostsProxyHeaders:
+      - "X-Forwarded-Host"

kubernetes/app/external/homeassistant/namespace.yaml

@@ -0,0 +1,7 @@
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: homeassistant
+  labels:
+    app.kubernetes.io/name: homeassistant

kubernetes/app/external/homeassistant/service.yaml

@@ -0,0 +1,11 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: homeassistant
+  namespace: homeassistant
+spec:
+  type: ExternalName
+  externalName: ${HOMEASSISTANT_INTERNAL_HOST}
+  ports:
+    - port: 8123

kubernetes/app/external/ks.yaml

@@ -0,0 +1,17 @@
+---
+apiVersion: kustomize.toolkit.fluxcd.io/v1
+kind: Kustomization
+metadata:
+  name: external-vars
+  namespace: flux-system
+spec:
+  interval: 10m
+  path: ./kubernetes/app/external/vars
+  prune: true
+  sourceRef:
+    kind: GitRepository
+    name: flux-system
+  decryption:
+    provider: sops
+    secretRef:
+      name: sops-age

kubernetes/app/external/vars/homeassistant.sops.yaml

@@ -0,0 +1,23 @@
+apiVersion: v1
+kind: Secret
+metadata:
+    name: homeassistant-vars
+    namespace: flux-system
+stringData:
+    HOMEASSISTANT_HOST: ENC[AES256_GCM,data:xHMOIu+pt7T/fbnfyD5B/InyCO7ZB1S2203agJ8uxjKIkA==,iv:z9Oh/JQo6cVUbKUcrHUFheXw5KU0U8byLH3OEwv0TyQ=,tag:0ThkPR7vJAxYsm1x0gs/bg==,type:str]
+    HOMEASSISTANT_INTERNAL_HOST: ENC[AES256_GCM,data:qq0NQ7hiEEpP6qyuBjxEwo5NPAifWQ==,iv:UD3rstcgk5nypLuyCbWEjCXb0yArWRWXUkGXuyOWrYk=,tag:QPBWyRtb611kVrsPwXtmwQ==,type:str]
+sops:
+    age:
+        - recipient: age1zffnskvuezntkk703a0pyxsd5m8vx2hm33dr47wdfy8mn4fdw4sqgw0jgc
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSA5M0NPOEF2dTNrdlU2NldK
+            T09oWkErRFFYeENKK21NSjhOdmpUa0d3clMwCk9BRElxc2JEbFFyb0RKZ3oyaXhJ
+            ckErd3pDNFlHV2srUFlaNEwvRUYvaVEKLS0tIHNMeG1WOG9VOFY1Vk1PR3hnQ1Zk
+            U3Q2RGZZeVhVemo5L2ZkMHpsSU4xNzgK6SDl+uBDB4vQLHKVdJ4NndPo4VRSKWyX
+            f4gertz0xd70GN+X13x10KHikmAHhk7WoYgXzGsbhaLIsFJUPN71JA==
+            -----END AGE ENCRYPTED FILE-----
+    lastmodified: "2026-02-22T21:15:14Z"
+    mac: ENC[AES256_GCM,data:oQ5J6G5UIByo1Y0RE6wMJOosvgq1mXQiks3WZVv03HOpMZ7Tp8YWhTMinTSu+arJDnk8aZyUXkElPGYilc46BH/2pMXX/GHoeuFODUb/IjyjJyLLyoFEYGEAoI79gJxbBrChFG2iXoExTagbrAq4RooMnFb6XEStYjFNp/MOmTA=,iv:JmkHL/ALdz+fscZ3ZXoiKi/dm5Mkk2EEXAd0Ldek3DM=,tag:QD61z/DCmXCnQyukk65OJA==,type:str]
+    encrypted_regex: ^(data|stringData|email)$
+    version: 3.11.0

kubernetes/app/ks.yaml

@@ -14,6 +14,7 @@ spec:
   dependsOn:
     - name: infrastructure-configs
     - name: config
+    - name: external-vars
   decryption:
     provider: sops
     secretRef:
@@ -22,3 +23,5 @@ spec:
     substituteFrom:
     - kind: Secret
       name: cluster-vars
+    - kind: Secret
+      name: homeassistant-vars

kubernetes/kustomization.yaml

@@ -5,3 +5,4 @@ resources:
 - config/ks.yaml
 - infrastructure/ks.yaml
 - app/ks.yaml
+- app/external/ks.yaml