Remove obsolete default backend settings

charts/ingress-nginx/README.md

@@ -56,7 +56,6 @@ Parameter | Description | Default
 `controller.config` | nginx [ConfigMap](https://github.com/kubernetes/ingress-nginx/blob/master/docs/user-guide/nginx-configuration/configmap.md) entries | none
 `controller.configAnnotations` | annotations to be added to controller custom configuration configmap | `{}`
 `controller.hostNetwork` | If the nginx deployment / daemonset should run on the host's network namespace. Do not set this when `controller.service.externalIPs` is set and `kube-proxy` is used as there will be a port-conflict for port `80` | false
-`controller.defaultBackendService` | default 404 backend service; needed only if `defaultBackend.enabled = false` and version < 0.21.0| `""`
 `controller.dnsPolicy` | If using `hostNetwork=true`, change to `ClusterFirstWithHostNet`. See [pod's dns policy](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy) for details | `ClusterFirst`
 `controller.dnsConfig` | custom pod dnsConfig. See [pod's dns config](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-config) for details | `{}`
 `controller.reportNodeInternalIp` | If using `hostNetwork=true`, setting `reportNodeInternalIp=true`, will pass the flag `report-node-internal-ip-address` to ingress-nginx. This sets the status of all Ingress objects to the internal IP address of all nodes running the NGINX Ingress controller.

charts/ingress-nginx/values.yaml

@@ -54,11 +54,6 @@ controller:
       http: 80
       https: 443
 
-  ## Required only if defaultBackend.enabled = false
-  ## Must be <namespace>/<service_name>
-  ##
-  defaultBackendService: ""
-
   ## Election ID to use for status update
   ##
   electionID: ingress-controller-leader
@@ -452,8 +447,6 @@ revisionHistoryLimit: 10
 ## Default 404 backend
 ##
 defaultBackend:
-
-  ## If false, controller.defaultBackendService must be provided
   ##
   enabled: false