authentik: serve LDAP via an outpost behind the internal gateway

Adds the LDAP outpost deployment and routes ports 389 and 636 on gateway-internal to it. 636 is a TLS listener in Terminate mode so cert-manager renews the LDAPS certificate automatically, and both listeners forward to the outpost's plaintext 3389. allowedRoutes.kinds is set explicitly on both listeners: a TCP listener permits no route kinds by default and a TLS listener defaults to TLSRoute, so the TCPRoute would not attach otherwise.
2026-09-13 11:24:23 +02:00
parent 7ee7db2346
commit c1287fa343
7 changed files with 165 additions and 0 deletions
@@ -0,0 +1,46 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: authentik-ldap
+  namespace: authentik
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: authentik-ldap
+  template:
+    metadata:
+      labels:
+        app: authentik-ldap
+    spec:
+      containers:
+        - name: ldap
+          image: ghcr.io/goauthentik/ldap:2026.8.0
+          ports:
+            - containerPort: 3389
+              name: ldap
+            - containerPort: 6636
+              name: ldaps
+            - containerPort: 9300
+              name: metrics
+          envFrom:
+            - secretRef:
+                name: authentik-ldap-secrets
+          livenessProbe:
+            httpGet:
+              path: /outpost.goauthentik.io/ping
+              port: 9300
+            initialDelaySeconds: 10
+            periodSeconds: 30
+          readinessProbe:
+            httpGet:
+              path: /outpost.goauthentik.io/ping
+              port: 9300
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          resources:
+            requests:
+              cpu: 50m
+              memory: 128Mi
+            limits:
+              memory: 256Mi
@@ -0,0 +1,24 @@
+apiVersion: secrets.infisical.com/v1alpha1
+kind: InfisicalSecret
+metadata:
+  name: authentik-ldap-secrets
+  namespace: infisical
+spec:
+  hostAPI: https://infisical.jsme.be
+  resyncInterval: 30
+  authentication:
+    kubernetesAuth:
+      identityId: "5458def7-7c63-40d2-95da-41c614d0933a"
+      serviceAccountRef:
+        name: infisical-auth
+        namespace: infisical
+      autoCreateServiceAccountToken: true
+      secretsScope:
+        projectSlug: "kubernetes"
+        envSlug: "prod"
+        secretsPath: "/authentik/authentik-ldap"
+        recursive: false
+  managedSecretReference:
+    secretName: authentik-ldap-secrets
+    secretNamespace: authentik
+    secretType: Opaque
@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: authentik-ldap
+  namespace: authentik
+spec:
+  selector:
+    app: authentik-ldap
+  ports:
+    - name: ldap
+      port: 3389
+      targetPort: 3389
+    - name: metrics
+      port: 9300
+      targetPort: 9300
@@ -0,0 +1,22 @@
+apiVersion: gateway.networking.k8s.io/v1alpha2
+kind: TCPRoute
+metadata:
+  name: authentik-ldap
+  namespace: authentik
+spec:
+  parentRefs:
+    - group: gateway.networking.k8s.io
+      kind: Gateway
+      name: gateway-internal
+      namespace: envoy-gateway
+      sectionName: authentik-ldap
+    - group: gateway.networking.k8s.io
+      kind: Gateway
+      name: gateway-internal
+      namespace: envoy-gateway
+      sectionName: authentik-ldaps
+  rules:
+    # The gateway terminates TLS on 636, so both listeners hit the plaintext port
+    - backendRefs:
+        - name: authentik-ldap
+          port: 3389