Retire Kubernetes v1.10 support, update OldestKubernetesVersion to v1.11

pkg/minikube/bootstrapper/kubeadm/kubeadm.go

@@ -264,15 +264,6 @@ func (k *Bootstrapper) StartCluster(k8s config.KubernetesConfig) error {
 		return errors.Wrapf(err, "cmd failed: %s\n%s\n", cmd, out)
 	}
 
-	if version.LT(semver.MustParse("1.10.0-alpha.0")) {
-		// TODO(r2d4): get rid of global here
-		master = k8s.NodeName
-
-		if err := retry.Expo(unmarkMaster, time.Millisecond*500, time.Second*113); err != nil {
-			return errors.Wrap(err, "timed out waiting to unmark master")
-		}
-	}
-
 	glog.Infof("Configuring cluster permissions ...")
 
 	if err := retry.Expo(elevateKubeSystemPrivileges, time.Millisecond*500, 60*time.Second); err != nil {
@@ -695,10 +686,7 @@ func generateConfig(k8s config.KubernetesConfig, r cruntime.Manager) ([]byte, er
 		opts.ServiceCIDR = k8s.ServiceCIDR
 	}
 
-	if version.GTE(semver.MustParse("1.10.0-alpha.0")) {
-		opts.NoTaintMaster = true
-	}
-
+	opts.NoTaintMaster = true
 	b := bytes.Buffer{}
 	configTmpl := configTmplV1Alpha1
 	if version.GTE(semver.MustParse("1.12.0")) {

pkg/minikube/bootstrapper/kubeadm/kubeadm_test.go

@@ -48,7 +48,7 @@ Wants=docker.socket
 
 [Service]
 ExecStart=
-ExecStart=/var/lib/minikube/binaries/v1.10.13/kubelet --allow-privileged=true --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cadvisor-port=0 --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=docker --fail-swap-on=false --hostname-override=minikube --kubeconfig=/etc/kubernetes/kubelet.conf --pod-manifest-path=/etc/kubernetes/manifests
+ExecStart=/var/lib/minikube/binaries/v1.11.10/kubelet --allow-privileged=true --authorization-mode=Webhook --bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf --cadvisor-port=0 --cgroup-driver=cgroupfs --client-ca-file=/var/lib/minikube/certs/ca.crt --cluster-dns=10.96.0.10 --cluster-domain=cluster.local --container-runtime=docker --fail-swap-on=false --hostname-override=minikube --kubeconfig=/etc/kubernetes/kubelet.conf --pod-manifest-path=/etc/kubernetes/manifests
 
 [Install]
 `,
@@ -186,7 +186,7 @@ func getExtraOptsPodCidr() []config.ExtraOption {
 
 func recentReleases() ([]string, error) {
 	// test the 6 most recent releases
-	versions := []string{"v1.16", "v1.15", "v1.14", "v1.13", "v1.12", "v1.11", "v1.10"}
+	versions := []string{"v1.16", "v1.15", "v1.14", "v1.13", "v1.12", "v1.11"}
 	foundNewest := false
 	foundDefault := false
 

pkg/minikube/bootstrapper/kubeadm/util.go

@@ -17,76 +17,22 @@ limitations under the License.
 package kubeadm
 
 import (
-	"encoding/json"
 	"net"
 	"time"
 
 	"github.com/golang/glog"
 	"github.com/pkg/errors"
-	core "k8s.io/api/core/v1"
 	rbac "k8s.io/api/rbac/v1beta1"
-	apierr "k8s.io/apimachinery/pkg/api/errors"
 	meta "k8s.io/apimachinery/pkg/apis/meta/v1"
-	"k8s.io/apimachinery/pkg/types"
-	"k8s.io/apimachinery/pkg/util/strategicpatch"
 	"k8s.io/minikube/pkg/minikube/constants"
 	"k8s.io/minikube/pkg/minikube/service"
 	"k8s.io/minikube/pkg/util/retry"
 )
 
 const (
-	masterTaint = "node-role.kubernetes.io/master"
-	rbacName    = "minikube-rbac"
+	rbacName = "minikube-rbac"
 )
 
-var master = ""
-
-func unmarkMaster() error {
-	k8s := service.K8s
-	client, err := k8s.GetCoreClient()
-	if err != nil {
-		return errors.Wrap(err, "getting core client")
-	}
-	n, err := client.Nodes().Get(master, meta.GetOptions{})
-	if err != nil {
-		return errors.Wrapf(err, "getting node %s", master)
-	}
-
-	oldData, err := json.Marshal(n)
-	if err != nil {
-		return errors.Wrap(err, "json marshalling data before patch")
-	}
-
-	newTaints := []core.Taint{}
-	for _, taint := range n.Spec.Taints {
-		if taint.Key == masterTaint {
-			continue
-		}
-
-		newTaints = append(newTaints, taint)
-	}
-	n.Spec.Taints = newTaints
-
-	newData, err := json.Marshal(n)
-	if err != nil {
-		return errors.Wrapf(err, "json marshalling data after patch")
-	}
-
-	patchBytes, err := strategicpatch.CreateTwoWayMergePatch(oldData, newData, core.Node{})
-	if err != nil {
-		return errors.Wrap(err, "creating strategic patch")
-	}
-
-	if _, err := client.Nodes().Patch(n.Name, types.StrategicMergePatchType, patchBytes); err != nil {
-		if apierr.IsConflict(err) {
-			return errors.Wrap(err, "strategic patch conflict")
-		}
-		return errors.Wrap(err, "applying strategic patch")
-	}
-
-	return nil
-}
-
 // elevateKubeSystemPrivileges gives the kube-system service account
 // cluster admin privileges to work with RBAC.
 func elevateKubeSystemPrivileges() error {

pkg/minikube/bootstrapper/kubeadm/versions.go

@@ -226,15 +226,6 @@ var versionSpecificOpts = []config.VersionedExtraOption{
 
 	// Cgroup args
 	config.NewUnversionedOption(Kubelet, "cgroup-driver", "cgroupfs"),
-	{
-		Option: config.ExtraOption{
-			Component: Apiserver,
-			Key:       "admission-control",
-			Value:     strings.Join(util.DefaultLegacyAdmissionControllers, ","),
-		},
-		LessThanOrEqual:    semver.MustParse("1.10.1000"), // Semver doesn't support wildcards.
-		GreaterThanOrEqual: semver.MustParse("1.9.0-alpha.0"),
-	},
 	{
 		Option: config.ExtraOption{
 			Component: Apiserver,

pkg/minikube/constants/constants.go

@@ -186,7 +186,7 @@ var DefaultKubernetesVersion = "v1.16.0-beta.1"
 var NewestKubernetesVersion = "v1.16.0-beta.1"
 
 // OldestKubernetesVersion is the oldest Kubernetes version to test against
-var OldestKubernetesVersion = "v1.10.13"
+var OldestKubernetesVersion = "v1.11.10"
 
 // ConfigFile is the path of the config file
 var ConfigFile = MakeMiniPath("config", "config.json")
@@ -263,9 +263,6 @@ func GetKubeadmCachedImages(imageRepository string, kubernetesVersionStr string)
 	v1_13 := semver.MustParseRange(">=1.13.0 <1.14.0")
 	v1_12 := semver.MustParseRange(">=1.12.0 <1.13.0")
 	v1_11 := semver.MustParseRange(">=1.11.0 <1.12.0")
-	v1_10 := semver.MustParseRange(">=1.10.0 <1.11.0")
-	v1_9 := semver.MustParseRange(">=1.9.0 <1.10.0")
-	v1_8 := semver.MustParseRange(">=1.8.0 <1.9.0")
 	v1_12plus := semver.MustParseRange(">=1.12.0")
 
 	kubernetesVersion, err := semver.Make(strings.TrimPrefix(kubernetesVersionStr, minikubeVersion.VersionPrefix))
@@ -345,37 +342,6 @@ func GetKubeadmCachedImages(imageRepository string, kubernetesVersionStr string)
 			imageRepository + "etcd" + ArchTag(true) + "3.2.18",
 			imageRepository + "coredns:1.1.3",
 		}...)
-
-	} else if v1_10(kubernetesVersion) {
-		podInfraContainerImage = imageRepository + "pause" + ArchTag(false) + "3.1"
-		images = append(images, []string{
-			podInfraContainerImage,
-			imageRepository + "k8s-dns-kube-dns" + ArchTag(true) + "1.14.8",
-			imageRepository + "k8s-dns-dnsmasq-nanny" + ArchTag(true) + "1.14.8",
-			imageRepository + "k8s-dns-sidecar" + ArchTag(true) + "1.14.8",
-			imageRepository + "etcd" + ArchTag(true) + "3.1.12",
-		}...)
-
-	} else if v1_9(kubernetesVersion) {
-		podInfraContainerImage = imageRepository + "pause" + ArchTag(false) + "3.0"
-		images = append(images, []string{
-			podInfraContainerImage,
-			imageRepository + "k8s-dns-kube-dns" + ArchTag(true) + "1.14.7",
-			imageRepository + "k8s-dns-dnsmasq-nanny" + ArchTag(true) + "1.14.7",
-			imageRepository + "k8s-dns-sidecar" + ArchTag(true) + "1.14.7",
-			imageRepository + "etcd" + ArchTag(true) + "3.1.10",
-		}...)
-
-	} else if v1_8(kubernetesVersion) {
-		podInfraContainerImage = imageRepository + "pause" + ArchTag(false) + "3.0"
-		images = append(images, []string{
-			podInfraContainerImage,
-			imageRepository + "k8s-dns-kube-dns" + ArchTag(true) + "1.14.5",
-			imageRepository + "k8s-dns-dnsmasq-nanny" + ArchTag(true) + "1.14.5",
-			imageRepository + "k8s-dns-sidecar" + ArchTag(true) + "1.14.5",
-			imageRepository + "etcd" + ArchTag(true) + "3.0.17",
-		}...)
-
 	} else {
 		podInfraContainerImage = imageRepository + "pause" + ArchTag(false) + "3.0"
 	}

site/content/en/docs/Reference/Configuration/kubernetes.md

@@ -15,7 +15,7 @@ This flag is repeated, so you can pass it several times with several different v
 
 minikube defaults to the latest stable version of Kubernetes. You may select a different Kubernetes release by using the `--kubernetes-version` flag, for example:
 
-  `minikube start --kubernetes-version=v1.10.13`
+  `minikube start --kubernetes-version=v1.11.10`
 
 minikube follows the [Kubernetes Version and Version Skew Support Policy](https://kubernetes.io/docs/setup/version-skew-policy/), so we guarantee support for the latest build for the last 3 minor Kubernetes releases. When practical, minikube aims for the the last 6 minor releases so that users can emulate legacy environments.
 
@@ -27,7 +27,6 @@ As of September 2019, this means that minikube supports and actively tests again
 * v1.13
 * v1.12
 * v1.11 (best effort)
-* v1.10 (best effort)
 
 For more up to date information, see `OldestKubernetesVersion` and `NewestKubernetesVersion` in [constants.go](https://github.com/kubernetes/minikube/blob/master/pkg/minikube/constants/constants.go)