ahmetb/kubectx · error

no contexts found in the kubeconfig file

Error message

no contexts found in the kubeconfig file

What it means

Guard error in InteractiveSwitchOp.Run: kc.ContextNames() returned an empty list, meaning the kubeconfig parsed fine but defines zero contexts. The interactive fzf picker has nothing to display, so it aborts instead of launching fzf with an empty menu.

Source

Thrown at cmd/kubectx/fzf.go:56

		return err
	}
	// parse kubeconfig just to see if it can be loaded
	kc := new(kubeconfig.Kubeconfig).WithLoader(kubeconfig.DefaultLoader)
	defer kc.Close()
	if err := kc.Parse(); err != nil {
		if cmdutil.IsNotFoundErr(err) {
			printer.Warning(stderr, "kubeconfig file not found")
			return nil
		}
		return fmt.Errorf("kubeconfig error: %w", err)
	}

	ctxNames, err := kc.ContextNames()
	if err != nil {
		return fmt.Errorf("failed to get context names: %w", err)
	}
	if len(ctxNames) == 0 {
		return errors.New("no contexts found in the kubeconfig file")
	}

	var in bytes.Buffer
	if err := formatContextList(kc, &in); err != nil {
		return err
	}

	cmd := exec.Command("fzf", "--ansi", "--no-preview")
	var out bytes.Buffer
	cmd.Stdin = &in
	cmd.Stderr = stderr
	cmd.Stdout = &out

	cmd.Env = append(os.Environ(),
		fmt.Sprintf("%s=1", env.EnvForceColor))
	if err := cmd.Run(); err != nil {
		var exitErr *exec.ExitError
		if !errors.As(err, &exitErr) {

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Add clusters/contexts to the kubeconfig (e.g. copy from cluster admin or `kubectl config set-context`)
2. Check KUBECONFIG points at the right file(s)

When it happens

Trigger: Thrown at cmd/kubectx/fzf.go:56 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of ahmetb/kubectx@12ad6fb22e (2026-09-02). Data as JSON: /api/errors/f5e996051e8873db. Report an issue: GitHub.