REFACTOR(headlamp): switch to authelia

- Remove OIDC config from helm-values
- Remove ExternalSecret (not needed)
- Add Authelia middleware to ingress
- Headlamp uses ServiceAccount for K8s API access

headlamp/external-secret.yaml

@@ -1,27 +0,0 @@
-apiVersion: external-secrets.io/v1
-kind: ExternalSecret
-metadata:
-  name: headlamp-oidc
-  namespace: headlamp
-spec:
-  refreshInterval: 1h
-  secretStoreRef:
-    kind: ClusterSecretStore
-    name: vault-backend
-  target:
-    name: headlamp-oidc
-    creationPolicy: Owner
-    template:
-      engineVersion: v2
-      data:
-        OIDC_CLIENT_ID: headlamp
-        OIDC_CLIENT_SECRET: "{{ .clientSecret }}"
-        OIDC_ISSUER_URL: https://auth0213.kro.kr
-        OIDC_SCOPES: "openid profile email groups"
-        OIDC_VALIDATOR_CLIENT_ID: headlamp
-        OIDC_VALIDATOR_ISSUER_URL: https://auth0213.kro.kr
-  data:
-    - secretKey: clientSecret
-      remoteRef:
-        key: cluster-infrastructure/authelia
-        property: HEADLAMP_CLIENT_SECRET

headlamp/helm-values.yaml

@@ -33,9 +33,3 @@ ingress:
 # Config
 config:
   baseURL: ""
-  oidc:
-    secret:
-      create: false
-    externalSecret:
-      enabled: true
-      name: headlamp-oidc

headlamp/ingress.yaml

@@ -5,6 +5,7 @@ metadata:
   namespace: headlamp
   annotations:
     cert-manager.io/cluster-issuer: "letsencrypt-prod"
+    traefik.ingress.kubernetes.io/router.middlewares: authelia-authelia-auth@kubernetescrd
 spec:
   ingressClassName: traefik
   tls:

headlamp/kustomization.yaml

@@ -2,4 +2,3 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
 - ingress.yaml
-- external-secret.yaml