ahmetb/kubectx · error

failed to switch context: %w

Error message

failed to switch context: %w

What it means

Umbrella wrapper: either swapContext (target '-') or switchContext (named target) failed, and this message adds no diagnosis beyond 'failed to switch context'. The real cause is in the wrapped error — common cases: unknown context name, unwritable kubeconfig, or unreadable state file.

Source

Thrown at cmd/kubectx/switch.go:43

// SwitchOp indicates intention to switch contexts.
type SwitchOp struct {
	Target string // '-' for back and forth, or NAME
}

func (op SwitchOp) Run(_, stderr io.Writer) error {
	if err := checkIsolatedMode(); err != nil {
		return err
	}
	var newCtx string
	var err error
	if op.Target == "-" {
		newCtx, err = swapContext()
	} else {
		newCtx, err = switchContext(op.Target)
	}
	if err != nil {
		return fmt.Errorf("failed to switch context: %w", err)
	}
	if err = printer.Success(stderr, "Switched to context \"%s\".", printer.SuccessColor.Sprint(newCtx)); err != nil {
		return fmt.Errorf("print error: %w", err)
	}
	return nil
}

// switchContext switches to specified context name.
func switchContext(name string) (string, error) {
	prevCtxFile, err := kubectxPrevCtxFile()
	if err != nil {
		return "", fmt.Errorf("failed to determine state file: %w", err)
	}

	kc := new(kubeconfig.Kubeconfig).WithLoader(kubeconfig.DefaultLoader)
	defer kc.Close()
	if err := kc.Parse(); err != nil {
		return "", fmt.Errorf("kubeconfig error: %w", err)

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Read the wrapped error: 'no context exists with the name' means a typo/unknown context; 'failed to save kubeconfig' means a permission problem
2. Verify the context name with kubectx or kubectl config get-contexts
3. For '-', ensure a previous switch was made (state file must exist)

When it happens

Trigger: Thrown at cmd/kubectx/switch.go:43 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/4d5f38f4d547a54c. Report an issue: GitHub.