kubeadm: add Priority to admission control

cmd/kubeadm/app/phases/controlplane/manifests.go

@@ -40,7 +40,8 @@ import (
 const (
 	DefaultCloudConfigPath = "/etc/kubernetes/cloud-config"
 
-	defaultv17AdmissionControl = "Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota"
+	defaultV18AdmissionControl = "Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,ResourceQuota"
+	defaultV19AdmissionControl = "Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,Priority,ResourceQuota"
 )
 
 // CreateInitStaticPodManifestFiles will write all static pod manifest files needed to bring up the control plane.
@@ -140,7 +141,7 @@ func getAPIServerCommand(cfg *kubeadmapi.MasterConfiguration, k8sVersion *versio
 	defaultArguments := map[string]string{
 		"advertise-address":               cfg.API.AdvertiseAddress,
 		"insecure-port":                   "0",
-		"admission-control":               defaultv17AdmissionControl,
+		"admission-control":               defaultV19AdmissionControl,
 		"service-cluster-ip-range":        cfg.Networking.ServiceSubnet,
 		"service-account-key-file":        filepath.Join(cfg.CertificatesDir, kubeadmconstants.ServiceAccountPublicKeyName),
 		"client-ca-file":                  filepath.Join(cfg.CertificatesDir, kubeadmconstants.CACertName),
@@ -165,6 +166,10 @@ func getAPIServerCommand(cfg *kubeadmapi.MasterConfiguration, k8sVersion *versio
 
 	command := []string{"kube-apiserver"}
 
+	if k8sVersion.Minor() == 8 {
+		defaultArguments["admission-control"] = defaultV18AdmissionControl
+	}
+
 	command = append(command, kubeadmutil.BuildArgumentListFromMap(defaultArguments, cfg.APIServerExtraArgs)...)
 	command = append(command, getAuthzParameters(cfg.AuthorizationModes)...)
 

cmd/kubeadm/app/phases/controlplane/manifests_test.go

@@ -351,6 +351,43 @@ func TestGetAPIServerCommand(t *testing.T) {
 				"--etcd-keyfile=faz",
 			},
 		},
+		{
+			cfg: &kubeadmapi.MasterConfiguration{
+				API:               kubeadmapi.API{BindPort: 123, AdvertiseAddress: "2001:db8::1"},
+				Networking:        kubeadmapi.Networking{ServiceSubnet: "bar"},
+				Etcd:              kubeadmapi.Etcd{CertFile: "fiz", KeyFile: "faz"},
+				CertificatesDir:   testCertsDir,
+				KubernetesVersion: "v1.9.0-beta.0",
+			},
+			expected: []string{
+				"kube-apiserver",
+				"--insecure-port=0",
+				"--admission-control=Initializers,NamespaceLifecycle,LimitRanger,ServiceAccount,PersistentVolumeLabel,DefaultStorageClass,DefaultTolerationSeconds,NodeRestriction,Priority,ResourceQuota",
+				"--service-cluster-ip-range=bar",
+				"--service-account-key-file=" + testCertsDir + "/sa.pub",
+				"--client-ca-file=" + testCertsDir + "/ca.crt",
+				"--tls-cert-file=" + testCertsDir + "/apiserver.crt",
+				"--tls-private-key-file=" + testCertsDir + "/apiserver.key",
+				"--kubelet-client-certificate=" + testCertsDir + "/apiserver-kubelet-client.crt",
+				"--kubelet-client-key=" + testCertsDir + "/apiserver-kubelet-client.key",
+				fmt.Sprintf("--secure-port=%d", 123),
+				"--allow-privileged=true",
+				"--kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname",
+				"--enable-bootstrap-token-auth=true",
+				"--proxy-client-cert-file=/var/lib/certs/front-proxy-client.crt",
+				"--proxy-client-key-file=/var/lib/certs/front-proxy-client.key",
+				"--requestheader-username-headers=X-Remote-User",
+				"--requestheader-group-headers=X-Remote-Group",
+				"--requestheader-extra-headers-prefix=X-Remote-Extra-",
+				"--requestheader-client-ca-file=" + testCertsDir + "/front-proxy-ca.crt",
+				"--requestheader-allowed-names=front-proxy-client",
+				"--authorization-mode=Node,RBAC",
+				"--advertise-address=2001:db8::1",
+				"--etcd-servers=http://127.0.0.1:2379",
+				"--etcd-certfile=fiz",
+				"--etcd-keyfile=faz",
+			},
+		},
 	}
 
 	for _, rt := range tests {