ahmetb/kubectx · error

kubeconfig error: %w

Error message

kubeconfig error: %w

What it means

Generic kubeconfig parse guard at the start of the shell session: loading/decoding the kubeconfig files failed. The wrapped error distinguishes load failures (missing/unreadable files from the loader) from decode failures (invalid YAML), and the session aborts before checking the target context.

Source

Thrown at cmd/kubectx/shell_session.go:47

	// If nil, the kubeconfig is used as-is.
	transformKubeconfig func(data []byte) (newData []byte, cleanup func(), err error)
}

func (s *shellSession) run(stderr io.Writer) error {
	if err := checkIsolatedMode(); err != nil {
		return err
	}

	kubectlPath, err := resolveKubectl()
	if err != nil {
		return err
	}

	// Verify context exists and get current context for exit message.
	kc := new(kubeconfig.Kubeconfig).WithLoader(kubeconfig.DefaultLoader)
	defer kc.Close()
	if err := kc.Parse(); err != nil {
		return fmt.Errorf("kubeconfig error: %w", err)
	}
	exists, err := kc.ContextExists(s.target)
	if err != nil {
		return fmt.Errorf("failed to check context: %w", err)
	}
	if !exists {
		return fmt.Errorf("no context exists with the name: %q", s.target)
	}
	previousCtx, err := kc.GetCurrentContext()
	if err != nil {
		return fmt.Errorf("failed to get current context: %w", err)
	}

	// Extract minimal kubeconfig for the target context.
	data, err := extractMinimalKubeconfig(kubectlPath, s.target)
	if err != nil {
		return fmt.Errorf("failed to extract kubeconfig for context: %w", err)
	}

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Verify every path in KUBECONFIG exists and is readable
2. Validate the YAML of each kubeconfig file (e.g. kubectl config view or a YAML linter)
3. Clear or fix the malformed file and retry the --shell command

When it happens

Trigger: Thrown at cmd/kubectx/shell_session.go:47 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/6b8ba38e5bf1ff0b. Report an issue: GitHub.