Merge branch v2.3 into master

docs/content/providers/ecs.md

@@ -13,18 +13,15 @@ Attach labels to your ECS containers and let Traefik do the rest!
     
     ```toml tab="File (TOML)"
     [providers.ecs]
-      clusters = ["default"]
     ```
     
     ```yaml tab="File (YAML)"
     providers:
-      ecs:
-        clusters:
-          - default
+      ecs: {}
     ```
     
     ```bash tab="CLI"
-    --providers.ecs.clusters=default
+    --providers.ecs=true
     ```
 
 ## Policy

docs/content/providers/kubernetes-crd.md

@@ -177,26 +177,32 @@ _Optional,Default: empty (process all resources)_
 
 ```toml tab="File (TOML)"
 [providers.kubernetesCRD]
-  labelselector = "A and not B"
+  labelselector = "app=traefik"
   # ...
 ```
 
 ```yaml tab="File (YAML)"
 providers:
   kubernetesCRD:
-    labelselector: "A and not B"
+    labelselector: "app=traefik"
     # ...
 ```
 
 ```bash tab="CLI"
---providers.kubernetescrd.labelselector="A and not B"
+--providers.kubernetescrd.labelselector="app=traefik"
 ```
 
 By default, Traefik processes all resource objects in the configured namespaces.
-A label selector can be defined to filter on specific resource objects only.
+A label selector can be defined to filter on specific resource objects only,
+this will apply only on Traefik [Custom Resources](../routing/providers/kubernetes-crd.md#custom-resource-definition-crd)
+and has no effect on Kubernetes `Secrets`, `Endpoints` and `Services`.
 
 See [label-selectors](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors) for details.
 
+!!! warning
+
+    As the LabelSelector is applied to all Traefik Custom Resources, they all must match the filter. 
+
 ### `ingressClass`
 
 _Optional, Default: empty_

docs/content/providers/kubernetes-ingress.md

@@ -4,7 +4,7 @@ The Kubernetes Ingress Controller.
 {: .subtitle }
 
 The Traefik Kubernetes Ingress provider is a Kubernetes Ingress controller; that is to say,
-it manages access to a cluster services by supporting the [Ingress](https://kubernetes.io/docs/concepts/services-networking/ingress/) specification.
+it manages access to cluster services by supporting the [Ingress](https://kubernetes.io/docs/concepts/services-networking/ingress/) specification.
 
 ## Routing Configuration
 
@@ -212,23 +212,23 @@ _Optional,Default: empty (process all Ingresses)_
 
 ```toml tab="File (TOML)"
 [providers.kubernetesIngress]
-  labelSelector = "A and not B"
+  labelSelector = "app=traefik"
   # ...
 ```
 
 ```yaml tab="File (YAML)"
 providers:
   kubernetesIngress:
-    labelselector: "A and not B"
+    labelselector: "app=traefik"
     # ...
 ```
 
 ```bash tab="CLI"
---providers.kubernetesingress.labelselector="A and not B"
+--providers.kubernetesingress.labelselector="app=traefik"
 ```
 
-By default, Traefik processes all Ingress objects in the configured namespaces.
-A label selector can be defined to filter on specific Ingress objects only.
+By default, Traefik processes all `Ingress` objects in the configured namespaces.
+A label selector can be defined to filter on specific `Ingress` objects only.
 
 See [label-selectors](https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors) for details.