Merge pull request #64889 from dims/ensure-directory-is-created-for-kubelet-configuration

Automatic merge from submit-queue. If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Ensure directory is created for kubelet configuration

**What this PR does / why we need it**:

Ensure directory is present before writing the config file.

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #64887

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```

cmd/kubeadm/app/phases/kubelet/config.go

@@ -19,6 +19,7 @@ package kubelet
 import (
 	"fmt"
 	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"k8s.io/api/core/v1"
@@ -161,6 +162,11 @@ func writeConfigBytesToDisk(b []byte, kubeletDir string) error {
 	configFile := filepath.Join(kubeletDir, kubeadmconstants.KubeletConfigurationFileName)
 	fmt.Printf("[kubelet] Writing kubelet configuration to file %q\n", configFile)
 
+	// creates target folder if not already exists
+	if err := os.MkdirAll(kubeletDir, 0700); err != nil {
+		return fmt.Errorf("failed to create directory %q: %v", kubeletDir, err)
+	}
+
 	if err := ioutil.WriteFile(configFile, b, 0644); err != nil {
 		return fmt.Errorf("failed to write kubelet configuration to the file %q: %v", configFile, err)
 	}