Update the k8s CRD documentation

docs/content/migration/v2.md

@@ -61,38 +61,10 @@ rules:
       - traefik.containo.us
     resources:
       - middlewares
-    verbs:
-      - get
-      - list
-      - watch
-  - apiGroups:
-      - traefik.containo.us
-    resources:
       - ingressroutes
-    verbs:
-      - get
-      - list
-      - watch
-  - apiGroups:
-      - traefik.containo.us
-    resources:
-      - ingressroutetcps
-    verbs:
-      - get
-      - list
-      - watch
-  - apiGroups:
-      - traefik.containo.us
-    resources:
-      - tlsoptions
-    verbs:
-      - get
-      - list
-      - watch
-  - apiGroups:
-      - traefik.containo.us
-    resources:
       - traefikservices
+      - ingressroutetcps
+      - tlsoptions
     verbs:
       - get
       - list
@@ -108,3 +80,95 @@ After having both resources applied, Traefik will work properly.
 `accessControlAllowOrigin` is deprecated.
 This field will be removed in future 2.x releases.
 Please configure your allowed origins in `accessControlAllowOriginList` instead.
+
+### Kubernetes CRD
+
+In v2.2, new Kubernetes CRDs called `TLSStore` and `IngressRouteUDP` were added.
+While updating an installation to v2.2,
+one should apply that CRDs, and update the existing `ClusterRole` definition to allow Traefik to use that CRDs.
+
+To add that CRDs and enhance the permissions, following definitions need to be applied to the cluster.
+
+```yaml tab="TLSStore"
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: tlsstores.traefik.containo.us
+
+spec:
+  group: traefik.containo.us
+  version: v1alpha1
+  names:
+    kind: TLSStore
+    plural: tlsstores
+    singular: tlsstore
+  scope: Namespaced
+
+```
+
+```yaml tab="IngressRouteUDP"
+apiVersion: apiextensions.k8s.io/v1beta1
+kind: CustomResourceDefinition
+metadata:
+  name: ingressrouteudps.traefik.containo.us
+
+spec:
+  group: traefik.containo.us
+  version: v1alpha1
+  names:
+    kind: IngressRouteUDP
+    plural: ingressrouteudps
+    singular: ingressrouteudp
+  scope: Namespaced
+
+```
+
+```yaml tab="ClusterRole"
+kind: ClusterRole
+apiVersion: rbac.authorization.k8s.io/v1beta1
+metadata:
+  name: traefik-ingress-controller
+
+rules:
+  - apiGroups:
+      - ""
+    resources:
+      - services
+      - endpoints
+      - secrets
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - extensions
+    resources:
+      - ingresses
+    verbs:
+      - get
+      - list
+      - watch
+  - apiGroups:
+      - extensions
+    resources:
+      - ingresses/status
+    verbs:
+      - update
+  - apiGroups:
+      - traefik.containo.us
+    resources:
+      - middlewares
+      - ingressroutes
+      - traefikservices
+      - ingressroutetcps
+      - ingressrouteudps
+      - tlsoptions
+      - tlsstores
+    verbs:
+      - get
+      - list
+      - watch
+
+```
+
+After having both resources applied, Traefik will work properly.