1. Fix create volume of CertificatesDir.

2. Replace "manifests" to kubeadmconstants.ManifestsDirName

cmd/kubeadm/app/cmd/reset.go

@@ -118,7 +118,7 @@ func (r *Reset) Run(out io.Writer) error {
 
 	// Only clear etcd data when the etcd manifest is found. In case it is not found, we must assume that the user
 	// provided external etcd endpoints. In that case, it is his own responsibility to reset etcd
-	etcdManifestPath := filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, "manifests/etcd.yaml")
+	etcdManifestPath := filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.ManifestsSubDirName, "etcd.yaml")
 	if _, err := os.Stat(etcdManifestPath); err == nil {
 		dirsToClean = append(dirsToClean, "/var/lib/etcd")
 	} else {
@@ -166,7 +166,7 @@ func cleanDir(filePath string) error {
 // resetConfigDir is used to cleanup the files kubeadm writes in /etc/kubernetes/.
 func resetConfigDir(configPathDir, pkiPathDir string) {
 	dirsToClean := []string{
-		filepath.Join(configPathDir, "manifests"),
+		filepath.Join(configPathDir, kubeadmconstants.ManifestsSubDirName),
 		pkiPathDir,
 	}
 	fmt.Printf("[reset] Deleting contents of config directories: %v\n", dirsToClean)

cmd/kubeadm/app/constants/constants.go

@@ -27,6 +27,8 @@ const (
 	// KubernetesDir is the directory kubernetes owns for storing various configuration files
 	KubernetesDir = "/etc/kubernetes"
 
+	ManifestsSubDirName = "manifests"
+
 	CACertAndKeyBaseName = "ca"
 	CACertName           = "ca.crt"
 	CAKeyName            = "ca.key"

cmd/kubeadm/app/master/BUILD

@@ -44,6 +44,7 @@ go_test(
     tags = ["automanaged"],
     deps = [
         "//cmd/kubeadm/app/apis/kubeadm:go_default_library",
+        "//cmd/kubeadm/app/constants:go_default_library",
         "//pkg/util/version:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/intstr:go_default_library",
         "//vendor/k8s.io/apimachinery/pkg/util/yaml:go_default_library",

cmd/kubeadm/app/master/manifests.go

@@ -74,7 +74,7 @@ func WriteStaticPodManifests(cfg *kubeadmapi.MasterConfiguration) error {
 		volumeMounts = append(volumeMounts, pkiVolumeMount())
 	}
 
-	if cfg.CertificatesDir != kubeadmapiext.DefaultCertificatesDir {
+	if !strings.HasPrefix(cfg.CertificatesDir, kubeadmapiext.DefaultCertificatesDir) {
 		volumes = append(volumes, newVolume("certdir", cfg.CertificatesDir))
 		volumeMounts = append(volumeMounts, newVolumeMount("certdir", cfg.CertificatesDir))
 	}
@@ -135,7 +135,7 @@ func WriteStaticPodManifests(cfg *kubeadmapi.MasterConfiguration) error {
 		staticPodSpecs[etcd] = etcdPod
 	}
 
-	manifestsPath := filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, "manifests")
+	manifestsPath := filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.ManifestsSubDirName)
 	if err := os.MkdirAll(manifestsPath, 0700); err != nil {
 		return fmt.Errorf("failed to create directory %q [%v]", manifestsPath, err)
 	}

cmd/kubeadm/app/master/manifests_test.go

@@ -20,6 +20,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"os"
+	"path/filepath"
 	"reflect"
 	"sort"
 	"testing"
@@ -29,6 +30,7 @@ import (
 	api "k8s.io/client-go/pkg/api/v1"
 	"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
 	kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
+	kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
 	"k8s.io/kubernetes/pkg/util/version"
 )
 
@@ -84,7 +86,7 @@ func TestWriteStaticPodManifests(t *testing.T) {
 
 		// Below is dead code.
 		if rt.expectedAPIProbePort != 0 {
-			manifest, err := os.Open(kubeadmapi.GlobalEnvParams.KubernetesDir + "/manifests/kube-apiserver.yaml")
+			manifest, err := os.Open(filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.ManifestsSubDirName, "kube-apiserver.yaml"))
 			if err != nil {
 				t.Errorf("WriteStaticPodManifests: %v", err)
 				continue

cmd/kubeadm/app/master/selfhosted.go

@@ -338,5 +338,5 @@ func getSchedulerDeployment(cfg *kubeadmapi.MasterConfiguration, volumes []v1.Vo
 }
 
 func buildStaticManifestFilepath(name string) string {
-	return filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, "manifests", name+".yaml")
+	return filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.ManifestsSubDirName, name+".yaml")
 }

cmd/kubeadm/app/preflight/checks.go

@@ -497,7 +497,7 @@ func RunInitMasterChecks(cfg *kubeadmapi.MasterConfiguration) error {
 		PortOpenCheck{port: 10251},
 		PortOpenCheck{port: 10252},
 		HTTPProxyCheck{Proto: "https", Host: cfg.API.AdvertiseAddress, Port: int(cfg.API.BindPort)},
-		DirAvailableCheck{Path: filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, "manifests")},
+		DirAvailableCheck{Path: filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.ManifestsSubDirName)},
 		DirAvailableCheck{Path: "/var/lib/kubelet"},
 		FileContentCheck{Path: bridgenf, Content: []byte{'1'}},
 		InPathCheck{executable: "ip", mandatory: true},
@@ -545,7 +545,7 @@ func RunJoinNodeChecks(cfg *kubeadmapi.NodeConfiguration) error {
 		ServiceCheck{Service: "kubelet", CheckIfActive: false},
 		ServiceCheck{Service: "docker", CheckIfActive: true},
 		PortOpenCheck{port: 10250},
-		DirAvailableCheck{Path: filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, "manifests")},
+		DirAvailableCheck{Path: filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.ManifestsSubDirName)},
 		DirAvailableCheck{Path: "/var/lib/kubelet"},
 		FileAvailableCheck{Path: cfg.CACertPath},
 		FileAvailableCheck{Path: filepath.Join(kubeadmapi.GlobalEnvParams.KubernetesDir, kubeadmconstants.KubeletKubeConfigFileName)},