{"record":{"id":"1b5e837f7854585b","repo":"kubernetes/kubernetes","slug":"failed-to-walk-through-kubelet-dropin-directory-q","errorCode":null,"errorMessage":"failed to walk through kubelet dropin directory %q: %w","messagePattern":"failed to walk through kubelet dropin directory %q: %w","errorType":"console","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"cmd/kubelet/app/server.go","lineNumber":383,"sourceCode":"\t\tdropinConfigJSON, gvk, err := loadDropinConfigFileIntoJSON(path)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"failed to load kubelet dropin file, path: %s, error: %w\", path, err)\n\t\t}\n\t\tif gvk == nil || gvk.Empty() {\n\t\t\treturn fmt.Errorf(\"failed to load kubelet dropin file, path: %s, no apiVersion/kind\", path)\n\t\t}\n\t\t// TODO: expand this once more than a single kubelet config version exists\n\t\tif *gvk != kubeletconfigv1beta1.SchemeGroupVersion.WithKind(\"KubeletConfiguration\") {\n\t\t\treturn fmt.Errorf(\"failed to load kubelet dropin file, path: %s, unknown apiVersion/kind: %v\", path, gvk.String())\n\t\t}\n\t\tmergedConfigJSON, err := jsonpatch.MergePatch(baseKubeletConfigJSON, dropinConfigJSON)\n\t\tif err != nil {\n\t\t\treturn fmt.Errorf(\"failed to merge drop-in and current config: %w\", err)\n\t\t}\n\t\tbaseKubeletConfigJSON = mergedConfigJSON\n\t\treturn nil\n\t}); err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to walk through kubelet dropin directory %q: %w\", kubeletDropInConfigDir, err)\n\t}\n\n\t// reset versioned config and decode\n\tversionedConfig = &kubeletconfigv1beta1.KubeletConfiguration{}\n\tif err := json.Unmarshal(baseKubeletConfigJSON, versionedConfig); err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to unmarshal merged JSON into kubelet configuration: %w\", err)\n\t}\n\t// apply defaulting after decoding\n\tkubeletconfigv1beta1conversion.SetDefaults_KubeletConfiguration(versionedConfig)\n\n\t// convert back to internal config\n\tif err := kubeletconfigv1beta1conversion.Convert_v1beta1_KubeletConfiguration_To_config_KubeletConfiguration(versionedConfig, kubeletConfig, nil); err != nil {\n\t\treturn nil, fmt.Errorf(\"failed to convert merged config to internal kubelet configuration: %w\", err)\n\t}\n\n\treturn skippedFiles, nil\n}\n","sourceCodeStart":365,"sourceCodeEnd":401,"githubUrl":"https://github.com/kubernetes/kubernetes/blob/b882c60b4023bdf09264c2d5d30a2cadebc240fb/cmd/kubelet/app/server.go#L365-L401","documentation":"Emitted when filepath.WalkDir itself fails traversing --kubelet-drop-in-config-dir (server.go:382-383). This is a filesystem-level failure of the directory walk: the directory does not exist, is not a directory, or cannot be read due to permissions. It is distinct from per-file load errors, which surface as [380].","triggerScenarios":"The path passed via --kubelet-drop-in-config-dir does not exist (ENOENT), is a regular file rather than a directory, or the kubelet process lacks traverse/read permission on it. Produced at the WalkDir error return.","commonSituations":"Kubelet configured with a drop-in directory that was never created; path typo in the systemd unit; the directory lives on a mount that failed to mount at boot; SELinux label denies access.","solutions":["Confirm the directory exists and is a directory: `ls -ld <dir>`.","Create it if missing: `sudo mkdir -p <dir>` (empty directory is valid — no drop-ins applied).","Fix permissions/ownership so the kubelet user can read it, and check SELinux/AppArmor labels with `ls -Z <dir>`.","Verify the path in the kubelet flags / systemd unit matches the on-disk path."],"exampleFix":null,"handlingStrategy":"validation","validationCode":"// Verify the drop-in directory exists and is traversable before starting kubelet.\ninfo, err := os.Stat(dropInDir)\nif err != nil || !info.IsDir() {\n    return fmt.Errorf(\"drop-in dir unusable: %w\", err)\n}","typeGuard":null,"tryCatchPattern":null,"preventionTips":["Create the drop-in directory in your node bootstrap (even if empty) so WalkDir always succeeds.","Mount/configure it on a persistent local filesystem; validate with `ls -ldZ`."],"tags":["kubelet","config","drop-in","filesystem","permissions","startup"],"analyzedSha":"b882c60b4023bdf09264c2d5d30a2cadebc240fb","analyzedAt":"2026-08-07T04:07:48.144Z","schemaVersion":2},"datasetVersion":"2026-08-07T07:17:06.508Z"}