From 66d1ba9d13d4dcb2e6b277b4bccfbcc5398379f9 Mon Sep 17 00:00:00 2001
From: Ruben Hensen <ruben.hensen@protonmail.com>
Date: Sun, 15 Mar 2026 10:50:18 +0100
Subject: [PATCH] Add oidc to Vault

---
 authentik/blueprint-vault-oidc.yaml | 45 +++++++++++++++++
 authentik/external-secret.yaml      | 18 +++++++
 vault/configure-oidc.yaml           | 75 +++++++++++++++++++++++++++++
 3 files changed, 138 insertions(+)
 create mode 100644 authentik/blueprint-vault-oidc.yaml
 create mode 100644 vault/configure-oidc.yaml

diff --git a/authentik/blueprint-vault-oidc.yaml b/authentik/blueprint-vault-oidc.yaml
new file mode 100644
index 0000000..d3ddb03
--- /dev/null
+++ b/authentik/blueprint-vault-oidc.yaml
@@ -0,0 +1,45 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: authentik-blueprint-vault
+data:
+  vault-oidc.yaml: |
+    version: 1
+    metadata:
+      name: Vault OIDC
+    entries:
+      - model: authentik_crypto.certificatekeypair
+        id: vault-signing-key
+        state: present
+        attrs:
+          name: vault-signing-key
+          generate: true
+      - model: authentik_providers_oauth2.oauth2provider
+        id: vault-provider
+        state: present
+        identifiers:
+          name: Vault
+        attrs:
+          name: Vault
+          authorization_flow: !Find [authentik_flows.flow, [slug, default-provider-authorization-implicit-consent]]
+          authentication_flow: !Find [authentik_flows.flow, [slug, default-authentication-flow]]
+          client_type: confidential
+          client_id: vault
+          client_secret: !Env [VAULT_OIDC_CLIENT_SECRET]
+          redirect_uris: |-
+            https://vault.hensen.io/ui/vault/auth/oidc/oidc/callback
+            http://localhost:8250/oidc/callback
+          signing_key: !KeyOf vault-signing-key
+          property_mappings:
+            - !Find [authentik_providers_oauth2.scopemapping, [managed, goauthentik.io/providers/oauth2/scope-openid]]
+            - !Find [authentik_providers_oauth2.scopemapping, [managed, goauthentik.io/providers/oauth2/scope-email]]
+            - !Find [authentik_providers_oauth2.scopemapping, [managed, goauthentik.io/providers/oauth2/scope-profile]]
+      - model: authentik_core.application
+        id: vault-app
+        state: present
+        identifiers:
+          slug: vault
+        attrs:
+          name: Vault
+          provider: !KeyOf vault-provider
+          meta_launch_url: https://vault.hensen.io
diff --git a/authentik/external-secret.yaml b/authentik/external-secret.yaml
index 4534fdd..db6985e 100644
--- a/authentik/external-secret.yaml
+++ b/authentik/external-secret.yaml
@@ -45,3 +45,21 @@ spec:
       remoteRef:
         key: kv/authentik
         property: postgres_password
+---
+apiVersion: external-secrets.io/v1beta1
+kind: ExternalSecret
+metadata:
+  name: vault-oidc-client-secret
+spec:
+  secretStoreRef:
+    name: vault-backend
+    kind: ClusterSecretStore
+  refreshInterval: 15m
+  target:
+    name: vault-oidc-client-secret
+    creationPolicy: Owner
+  data:
+    - secretKey: client_secret
+      remoteRef:
+        key: kv/vault-oidc
+        property: client_secret
diff --git a/vault/configure-oidc.yaml b/vault/configure-oidc.yaml
new file mode 100644
index 0000000..d8345e9
--- /dev/null
+++ b/vault/configure-oidc.yaml
@@ -0,0 +1,75 @@
+apiVersion: external-secrets.io/v1beta1
+kind: ExternalSecret
+metadata:
+  name: vault-oidc-config
+spec:
+  secretStoreRef:
+    name: vault-backend
+    kind: ClusterSecretStore
+  refreshInterval: 15m
+  target:
+    name: vault-oidc-config
+    creationPolicy: Owner
+  data:
+    - secretKey: client_secret
+      remoteRef:
+        key: kv/vault-oidc
+        property: client_secret
+    - secretKey: admin_token
+      remoteRef:
+        key: kv/vault-oidc
+        property: admin_token
+---
+apiVersion: batch/v1
+kind: Job
+metadata:
+  name: vault-configure-oidc
+  annotations:
+    argocd.argoproj.io/hook: PostSync
+    argocd.argoproj.io/hook-delete-policy: BeforeHookCreation
+spec:
+  backoffLimit: 3
+  template:
+    spec:
+      containers:
+        - name: configure
+          image: hashicorp/vault:1.15
+          env:
+            - name: VAULT_ADDR
+              value: "https://vault-active.vault.svc:8200"
+            - name: VAULT_CACERT
+              value: "/vault-tls/vault.ca"
+            - name: VAULT_TOKEN
+              valueFrom:
+                secretKeyRef:
+                  name: vault-oidc-config
+                  key: admin_token
+            - name: OIDC_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: vault-oidc-config
+                  key: client_secret
+          volumeMounts:
+            - name: vault-tls
+              mountPath: /vault-tls
+              readOnly: true
+          command: ["/bin/sh", "-c"]
+          args:
+            - |
+              vault auth enable oidc 2>/dev/null || true
+              vault write auth/oidc/config \
+                oidc_discovery_url="https://authentik.rubenhensen.nl/application/o/vault/" \
+                oidc_client_id="vault" \
+                oidc_client_secret="$OIDC_CLIENT_SECRET" \
+                default_role="default"
+              vault write auth/oidc/role/default \
+                allowed_redirect_uris="https://vault.hensen.io/ui/vault/auth/oidc/oidc/callback" \
+                allowed_redirect_uris="http://localhost:8250/oidc/callback" \
+                user_claim="preferred_username" \
+                groups_claim="groups" \
+                policies="default"
+      volumes:
+        - name: vault-tls
+          secret:
+            secretName: vault-ha-tls
+      restartPolicy: OnFailure