Remove ingress-nginx default backend

It's not needed since nginx 0.20.0.

See the following pull-requests for context:
* https://github.com/kubernetes/ingress-nginx/pull/3126
* https://github.com/kubernetes/ingress-nginx/pull/3156

deploy/addons/ingress/ingress-dp.yaml.tmpl

@@ -12,51 +12,6 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-apiVersion: extensions/v1beta1
-kind: Deployment
-metadata:
-  name: default-http-backend
-  namespace: kube-system
-  labels:
-    app.kubernetes.io/name: default-http-backend
-    app.kubernetes.io/part-of: kube-system
-    addonmanager.kubernetes.io/mode: Reconcile
-spec:
-  replicas: 1
-  selector:
-    matchLabels:
-      app.kubernetes.io/name: default-http-backend
-      addonmanager.kubernetes.io/mode: Reconcile
-  template:
-    metadata:
-      labels:
-        app.kubernetes.io/name: default-http-backend
-        addonmanager.kubernetes.io/mode: Reconcile
-    spec:
-      terminationGracePeriodSeconds: 60
-      containers:
-      - name: default-http-backend
-        # Any image is permissible as long as:
-        # 1. It serves a 404 page at /
-        # 2. It serves 200 on a /healthz endpoint        
-        image: {{default "gcr.io/google_containers" .ImageRepository}}/defaultbackend{{.ExoticArch}}:1.4
-        imagePullPolicy: IfNotPresent
-        livenessProbe:
-          httpGet:
-            path: /healthz
-            port: 8080
-            scheme: HTTP
-          initialDelaySeconds: 30
-          timeoutSeconds: 5
-        ports:
-        - containerPort: 8080
-        resources:
-          limits:
-            cpu: 20m
-            memory: 30Mi
-          requests:
-            cpu: 20m
-            memory: 30Mi
 ---
 apiVersion: extensions/v1beta1
 kind: Deployment
@@ -121,7 +76,6 @@ spec:
           hostPort: 18080
         args:
         - /nginx-ingress-controller
-        - --default-backend-service=$(POD_NAMESPACE)/default-http-backend
         - --configmap=$(POD_NAMESPACE)/nginx-load-balancer-conf
         - --tcp-services-configmap=$(POD_NAMESPACE)/tcp-services
         - --udp-services-configmap=$(POD_NAMESPACE)/udp-services

deploy/addons/ingress/ingress-svc.yaml.tmpl

-# Copyright 2016 The Kubernetes Authors All rights reserved.
-#
-# 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: v1
-kind: Service
-metadata:
-  name: default-http-backend
-  namespace: kube-system
-  labels:
-    app.kubernetes.io/name: default-http-backend
-    app.kubernetes.io/part-of: kube-system
-    kubernetes.io/minikube-addons: ingress
-    kubernetes.io/minikube-addons-endpoint: ingress
-    addonmanager.kubernetes.io/mode: Reconcile
-spec:
-  type: NodePort
-  ports:
-  - port: 80
-    targetPort: 8080
-    nodePort: 30001
-  selector:
-    app.kubernetes.io/name: default-http-backend
\ No newline at end of file

pkg/minikube/assets/addons.go

@@ -220,12 +220,6 @@ var Addons = map[string]*Addon{
 			"ingress-dp.yaml",
 			"0640",
 			true),
-		MustBinAsset(
-			"deploy/addons/ingress/ingress-svc.yaml.tmpl",
-			constants.AddonsPath,
-			"ingress-svc.yaml",
-			"0640",
-			false),
 	}, false, "ingress"),
 	"metrics-server": NewAddon([]*BinAsset{
 		MustBinAsset(

test/integration/addons_test.go

@@ -129,10 +129,6 @@ func testIngressController(t *testing.T) {
 		t.Fatalf("waiting for ingress-controller to be up: %v", err)
 	}
 
-	if err := util.WaitForIngressDefaultBackendRunning(t); err != nil {
-		t.Fatalf("waiting for default-http-backend to be up: %v", err)
-	}
-
 	curdir, err := filepath.Abs("")
 	if err != nil {
 		t.Errorf("Error getting the file path for current directory: %s", curdir)

test/integration/util/util.go

@@ -359,28 +359,6 @@ func WaitForIngressControllerRunning(t *testing.T) error {
 	return nil
 }
 
-// WaitForIngressDefaultBackendRunning waits until ingress default backend pod to be running
-func WaitForIngressDefaultBackendRunning(t *testing.T) error {
-	client, err := commonutil.GetClient()
-	if err != nil {
-		return errors.Wrap(err, "getting kubernetes client")
-	}
-
-	if err := commonutil.WaitForDeploymentToStabilize(client, "kube-system", "default-http-backend", time.Minute*10); err != nil {
-		return errors.Wrap(err, "waiting for default-http-backend deployment to stabilize")
-	}
-
-	if err := commonutil.WaitForService(client, "kube-system", "default-http-backend", true, time.Millisecond*500, time.Minute*10); err != nil {
-		return errors.Wrap(err, "waiting for default-http-backend service to be up")
-	}
-
-	if err := commonutil.WaitForServiceEndpointsNum(client, "kube-system", "default-http-backend", 1, time.Second*3, time.Minute*10); err != nil {
-		return errors.Wrap(err, "waiting for one default-http-backend endpoint to be up")
-	}
-
-	return nil
-}
-
 // WaitForGvisorControllerRunning waits for the gvisor controller pod to be running
 func WaitForGvisorControllerRunning(t *testing.T) error {
 	client, err := commonutil.GetClient()