cleanup

charts/apps/headscale/templates/client.yaml

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+apiVersion: homelab.mortenolsen.pro/v1
+kind: OidcClient
+metadata:
+  name: '{{ .Release.Name }}'
+spec:
+  environment: '{{ .Values.globals.environment }}'
+  redirectUris:
+    - path: /oidc/callback
+      subdomain: '{{ .Values.subdomain }}'
+      matchingMode: strict

charts/apps/headscale/templates/config-map.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: '{{ .Release.Name }}-config-template'
+data:
+  config.yaml.template: |
+    server_url: ${PUBLIC_URL}
+    listen_addr: 0.0.0.0:8080
+    metrics_listen_addr: 0.0.0.0:9090
+    grpc_listen_addr: 0.0.0.0:50443
+
+    private_key_path: /var/lib/headscale/private_key # Path inside the container
+
+    noise:
+      private_key_path: /var/lib/headscale/noise_private_key # Path inside the container
+
+    listen_routes: false 
+    base_domain: "${PUBLIC_URL}" # For client routes and DNS push.
+
+    derp:
+      server:
+        enabled: false
+        region_id: 999
+        region_code: "headscale"
+        region_name: "Headscale Embedded DERP"
+        stun_listen_addr: "0.0.0.0:3478"
+        automatically_add_embedded_derp_region: true
+      urls:
+        - https://controlplane.tailscale.com/derpmap/default
+      auto_update_enabled: true
+      update_frequency: 24h
+
+    oidc:
+      enabled: true
+      only_start_if_oidc_is_available: true
+      issuer: "${OIDC_ISSUER_URL}"
+      client_id: "${OIDC_CLIENT_ID}"
+      client_secret: "${OIDC_CLIENT_SECRET}"
+      scopes: ["openid", "profile", "email"]
+      redirect_url: "${PUBLIC_URL}/oidc/callback"
+      pkce:
+        enabled: true
+        method: S256
+
+
+    # DNS configuration
+    dns:
+      magic_dns: false
+      override_local_dns: true # Push Headscale's DNS settings to clients
+      ttl: 60
+      nameservers:
+        global:
+          - 1.1.1.1 # Cloudflare DNS
+          #- 10.43.0.10 # Replace with your ClusterIP for kube-dns/CoreDNS
+      # Domains to search for (e.g., for Kubernetes services)
+      search_domains:
+        - svc.cluster.local
+        - cluster.local
+
+    auto_create_users: true
+
+    oidc_user_property: preferred_username # Or 'email' or 'sub'
+
+    prefixes:
+      v4: 10.20.20.0/24 # Example: A /24 subnet for your VPN clients
+
+    database:
+      type: sqlite
+      sqlite:
+        path: /var/lib/headscale/db.sqlite

charts/apps/headscale/templates/deployment.yaml

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+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: '{{ .Release.Name }}'
+  labels:
+    app: '{{ .Release.Name }}'
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: '{{ .Release.Name }}'
+  template:
+    metadata:
+      labels:
+        app: '{{ .Release.Name }}'
+    spec:
+      # To expose WireGuard UDP directly, we need a NodePort service.
+      # The Pod needs to be aware of the external port it's being exposed on.
+      # The easiest way to get WireGuard to listen on the correct port and make it
+      # externally accessible is to use `hostNetwork: true` for the UDP component,
+      # or by directly specifying the listen port in Headscale config if the NodePort is stable.
+
+      # OPTION 1: Best for simple homelab on bare metal where host network traffic isn't an issue
+      # hostNetwork: true # This makes the pod listen directly on the node's IPs
+      # dnsPolicy: ClusterFirstWithHostNet # Required if using hostNetwork
+
+      initContainers:
+        - name: generate-config
+          image: alpine/git # A small image with 'envsubst' available or easily installable
+          imagePullPolicy: IfNotPresent
+          command: ['sh', '-c']
+          args:
+            - |
+              # Install envsubst if it's not present (alpine/git may not have it by default)
+              apk update && apk add bash gettext
+
+              # Substitute environment variables into the template
+              # The vars are passed via `env` section below
+              envsubst < /config-template/config.yaml.template > /etc/headscale/config.yaml
+
+              mkdir -p /etc/headscale
+              # Optional: Verify the generated config
+              echo "--- Generated Headscale Configuration ---"
+              cat /etc/headscale/config.yaml
+              echo "---------------------------------------"
+          env:
+            # These are the variables that `envsubst` will look for and replace
+            - name: PUBLIC_URL
+              value: 'https://{{ .Values.subdomain }}.olsen.cloud'
+            - name: OIDC_ISSUER_URL
+              valueFrom:
+                secretKeyRef:
+                  name: '{{ .Release.Name }}-client'
+                  key: configurationIssuer
+            - name: OIDC_CLIENT_ID
+              valueFrom:
+                secretKeyRef:
+                  name: '{{ .Release.Name }}-client'
+                  key: clientId
+            - name: OIDC_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: '{{ .Release.Name }}-client'
+                  key: clientSecret
+            # Add any other variables used in config.yaml.template here
+          volumeMounts:
+            - name: config-template
+              mountPath: /config-template # Mount the ConfigMap as a volume
+              readOnly: true
+            - name: headscale-config
+              mountPath: /etc/headscale # Destination for the generated config
+
+      containers:
+        - name: '{{ .Release.Name }}'
+          image: headscale/headscale:latest # Use the official image
+          command: ['headscale', 'serve']
+          ports:
+            - name: http-api
+              containerPort: 8080
+              protocol: TCP
+            - name: wireguard-udp
+              containerPort: 41641
+              protocol: UDP
+          volumeMounts:
+            - name: headscale-data
+              mountPath: /var/lib/headscale
+            - name: headscale-config
+              mountPath: /etc/headscale
+      volumes:
+        - name: config-template
+          configMap:
+            name: '{{ .Release.Name }}-config-template'
+        - name: headscale-config
+          emptyDir: {}
+        - name: headscale-data
+          persistentVolumeClaim:
+            claimName: '{{ .Release.Name }}-data'

charts/apps/headscale/templates/external-http-service.yaml

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+apiVersion: homelab.mortenolsen.pro/v1
+kind: ExternalHttpService
+metadata:
+  name: '{{ .Release.Name }}'
+spec:
+  environment: '{{ .Values.globals.environment }}'
+  subdomain: '{{ .Values.subdomain }}'
+  destination:
+    host: '{{ .Release.Name }}.{{ .Release.Namespace }}.svc.cluster.local'
+    port:
+      number: 80

charts/apps/headscale/templates/pvc.yaml

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+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: '{{ .Release.Name }}-data'
+spec:
+  accessModes:
+    - 'ReadWriteOnce'
+  resources:
+    requests:
+      storage: '1Gi'
+  storageClassName: '{{ .Values.globals.environment }}'

charts/apps/headscale/templates/service.yaml

@@ -0,0 +1,32 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: '{{ .Release.Name }}'
+  labels:
+    app: '{{ .Release.Name }}'
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      targetPort: 8080
+      protocol: TCP
+      name: http
+  selector:
+    app: '{{ .Release.Name }}'
+
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: '{{ .Release.Name }}-headscale'
+  labels:
+    app: '{{ .Release.Name }}'
+spec:
+  type: LoadBalancer
+  ports:
+    - port: 41641
+      targetPort: 41641
+      protocol: UDP
+      name: wireguard-udp
+  selector:
+    app: '{{ .Release.Name }}'