Update NewestVersion to v1.19.0-rc.4

pkg/minikube/bootstrapper/images/images.go

@@ -66,8 +66,10 @@ func componentImage(name string, v semver.Version, mirror string) string {
 func coreDNS(v semver.Version, mirror string) string {
 	// Should match `CoreDNSVersion` in
 	// https://github.com/kubernetes/kubernetes/blob/master/cmd/kubeadm/app/constants/constants.go
-	cv := "1.6.7"
+	cv := "1.7.0"
 	switch v.Minor {
+	case 18:
+		cv = "1.6.7"
 	case 17:
 		cv = "1.6.5"
 	case 16:
@@ -94,8 +96,10 @@ func etcd(v semver.Version, mirror string) string {
 
 	// Should match `DefaultEtcdVersion` in:
 	// https://github.com/kubernetes/kubernetes/blob/master/cmd/kubeadm/app/constants/constants.go
-	ev := "3.4.3-0"
+	ev := "3.4.9-1"
 	switch v.Minor {
+	case 17, 18:
+		ev = "3.4.3-0"
 	case 16:
 		ev = "3.3.15-0"
 	case 14, 15:

pkg/minikube/constants/constants.go

@@ -29,7 +29,8 @@ const (
 	// DefaultKubernetesVersion is the default Kubernetes version
 	DefaultKubernetesVersion = "v1.18.3"
 	// NewestKubernetesVersion is the newest Kubernetes version to test against
-	NewestKubernetesVersion = "v1.18.4-rc.0"
+	// NOTE: You may need to update coreDNS & etcd versions in pkg/minikube/bootstrapper/images/images.go
+	NewestKubernetesVersion = "v1.19.0-rc.4"
 	// OldestKubernetesVersion is the oldest Kubernetes version to test against
 	OldestKubernetesVersion = "v1.13.0"
 	// DefaultClusterName is the default nane for the k8s cluster

site/content/en/docs/commands/start.md

@@ -68,7 +68,7 @@ minikube start [flags]
       --interactive                       Allow user prompts for more information (default true)
       --iso-url strings                   Locations to fetch the minikube ISO from. (default [https://storage.googleapis.com/minikube/iso/minikube-v1.12.2.iso,https://github.com/kubernetes/minikube/releases/download/v1.12.2/minikube-v1.12.2.iso,https://kubernetes.oss-cn-hangzhou.aliyuncs.com/minikube/iso/minikube-v1.12.2.iso])
       --keep-context                      This will keep the existing kubectl context and will create a minikube context.
-      --kubernetes-version string         The Kubernetes version that the minikube VM will use (ex: v1.2.3, 'stable' for v1.18.3, 'latest' for v1.18.4-rc.0). Defaults to 'stable'.
+      --kubernetes-version string         The Kubernetes version that the minikube VM will use (ex: v1.2.3, 'stable' for v1.18.3, 'latest' for v1.19.0-rc.4). Defaults to 'stable'.
       --kvm-gpu                           Enable experimental NVIDIA GPU support in minikube
       --kvm-hidden                        Hide the hypervisor signature from the guest in minikube (kvm2 driver only)
       --kvm-network string                The KVM network name. (kvm2 driver only) (default "default")