{"record":{"id":"253d54810152affa","repo":"GoogleContainerTools/skaffold","slug":"unable-to-create-log-file-for-render-step-w","errorCode":null,"errorMessage":"unable to create log file for render step: %w","messagePattern":"unable to create log file for render step: %w","errorType":"console","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"pkg/skaffold/render/util/logfile.go","lineNumber":42,"sourceCode":"\t\"github.com/GoogleContainerTools/skaffold/v2/pkg/skaffold/output\"\n)\n\n// TimeFormat is used to name log files generated by render step\nconst TimeFormat = \"2006-01-02_15-04-05\"\n\ntype Muted interface {\n\tMuteRender() bool\n}\n\n// WithLogFile returns a file to write the render output to, and a function to be executed after the render step is complete.\nfunc WithLogFile(filename string, out io.Writer, muted Muted) (io.Writer, func(), error) {\n\tif !muted.MuteRender() {\n\t\treturn out, func() {}, nil\n\t}\n\n\tfile, err := logfile.Create(\"render\", filename)\n\tif err != nil {\n\t\treturn out, func() {}, fmt.Errorf(\"unable to create log file for render step: %w\", err)\n\t}\n\n\toutput.Default.Fprintln(out, \"Starting render...\")\n\toutput.Default.Fprintln(out, \"- writing log to\", file.Name())\n\n\t// After the render finishes, close the log file.\n\treturn file, func() {\n\t\tfile.Close()\n\t}, err\n}\n","sourceCodeStart":24,"sourceCodeEnd":53,"githubUrl":"https://github.com/GoogleContainerTools/skaffold/blob/a1189de023efc32d4b8e11f395acc678aa555011/pkg/skaffold/render/util/logfile.go#L24-L53","documentation":"WithLogFile wraps the render output and creates a log file (render/<timestamp>-<filename>) when render is not muted. If logfile.Create fails (bad permissions, nonexistent log dir, disk full), the render cannot start and this error wraps the cause.","triggerScenarios":"WithLogFile called while MuteRender() is false and logfile.Create('render', filename) fails due to filesystem errors creating the log file.","commonSituations":"Read-only filesystem or sandbox without write access to the log directory; disk quota exhausted; log dir path conflicts (file exists where a dir is needed).","solutions":["Check write permissions and free space for the skaffold log directory","Remove any conflicting file/dir at the log path (e.g. a file named 'render')","Run with --mute-render or set muted render to skip log-file creation","Read the wrapped err for the exact OS-level failure (errno)"],"exampleFix":"// before: run in read-only container fs\n// after\nskaffold render --mute-render\n# or grant write access to the log directory","handlingStrategy":"fallback","validationCode":"logDir := filepath.Join(\".skaffold\", \"logs\")\nif err := os.MkdirAll(logDir, 0o755); err != nil {\n    return fmt.Errorf(\"cannot prepare log dir: %w\", err)\n}\nif fi, err := os.Stat(logDir); err == nil && !fi.IsDir() {\n    return fmt.Errorf(\"%s is a file, not a directory\", logDir)\n}","typeGuard":null,"tryCatchPattern":"closer, err := renderutil.WithLogFile(time.Now().Format(...)+\".log\", out, muted)\nif err != nil {\n    out, closer, err = out, func(){}, nil // proceed without a log file\n}","preventionTips":["Ensure the workspace filesystem is writable where skaffold runs","Use --mute-render in CI when render logs are not needed","Check disk space/quota before long render runs"],"tags":["logging","filesystem","render","skaffold"],"backgroundTag":"log-file-creation-failed","analyzedSha":"a1189de023efc32d4b8e11f395acc678aa555011","analyzedAt":"2026-09-05T12:09:27.064Z","contentChangedAt":"2026-09-05T12:09:27.064Z","schemaVersion":2},"datasetVersion":"2026-09-12T17:17:11.597Z"}