k3s-io/k3s · error

invalid output format %s

Error message

invalid output format %s

What it means

Error "invalid output format %s" thrown in k3s-io/k3s.

Source

Thrown at pkg/cli/cert/cert.go:245

	certInfo, err := collectCertInfo(serverConfig.ControlConfig, cmds.ServicesList.Value())
	if err != nil {
		return err
	}
	outFmt := app.String("output")

	var formatter Formatter
	switch outFmt {
	case "text":
		formatter = &TextFormatter{Writer: os.Stdout}
	case "table":
		formatter = &TableFormatter{Writer: os.Stdout}
	case "json":
		formatter = &JSONFormatter{Writer: os.Stdout}
	case "yaml":
		formatter = &YAMLFormatter{Writer: os.Stdout}
	default:
		return fmt.Errorf("invalid output format %s", outFmt)
	}

	return formatter.Format(certInfo)
}

func Rotate(app *cli.Context) error {
	if err := cmds.InitLogging(); err != nil {
		return err
	}
	return rotate(app, &cmds.ServerConfig)
}

func rotate(app *cli.Context, cfg *cmds.Server) error {
	var serverConfig server.Config

	dataDir, err := commandSetup(app, cfg, &serverConfig)
	if err != nil {
		return err

View on GitHub (pinned to 6ba341e396)

When it happens

Trigger: Thrown at pkg/cli/cert/cert.go:245 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of k3s-io/k3s@6ba341e396 (2026-08-15). Data as JSON: /api/errors/ad08df4118861528. Report an issue: GitHub.