Webhook has only namespaced Secret permissions, rather than cluster-w…

…ide. (#4684)

config/200-webhook-role.yaml

@@ -0,0 +1 @@
+core/roles/webhook-role.yaml

config/core/200-webhook-serviceaccount.yaml

@@ -39,6 +39,24 @@ roleRef:
 
 ---
 
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  namespace: knative-eventing
+  name: eventing-webhook
+  labels:
+    eventing.knative.dev/release: devel
+subjects:
+  - kind: ServiceAccount
+    name: eventing-webhook
+    namespace: knative-eventing
+roleRef:
+  kind: Role
+  name: knative-eventing-webhook
+  apiGroup: rbac.authorization.k8s.io
+
+---
+
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding
 metadata:

config/core/roles/webhook-clusterrole.yaml

@@ -33,7 +33,6 @@ rules:
   - apiGroups:
       - ""
     resources:
-      - "secrets"
       - "namespaces"
     verbs:
       - "get"

config/core/roles/webhook-role.yaml

@@ -0,0 +1,34 @@
+# Copyright 2020 The Knative Authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: rbac.authorization.k8s.io/v1
+kind: Role
+metadata:
+  namespace: knative-eventing
+  name: knative-eventing-webhook
+  labels:
+    eventing.knative.dev/release: devel
+rules:
+  # For manipulating certs into secrets.
+  - apiGroups:
+      - ""
+    resources:
+      - "secrets"
+    verbs:
+      - "get"
+      - "create"
+      - "update"
+      - "list"
+      - "watch"
+      - "patch"