ahmetb/kubectx · error

failed to change context name: %w

Error message

failed to change context name: %w

What it means

ModifyContextName failed to rename the context entry from op.Old to op.New inside the in-memory kubeconfig. Fires when the kyaml rename operation errors (e.g. structural problems in the contexts list or a failed field mutation), after all validation already passed.

Source

Thrown at cmd/kubectx/rename.go:83

		return fmt.Errorf("failed to check context: %w", err)
	}
	if !oldExists {
		return fmt.Errorf("context \"%s\" not found, can't rename it", op.Old)
	}

	newExists, err := kc.ContextExists(op.New)
	if err != nil {
		return fmt.Errorf("failed to check context: %w", err)
	}
	if newExists {
		printer.Warning(stderr, "context \"%s\" exists, overwriting it.", op.New)
		if err := kc.DeleteContextEntry(op.New); err != nil {
			return fmt.Errorf("failed to delete new context to overwrite it: %w", err)
		}
	}

	if err := kc.ModifyContextName(op.Old, op.New); err != nil {
		return fmt.Errorf("failed to change context name: %w", err)
	}
	if op.Old == cur {
		if err := kc.ModifyCurrentContext(op.New); err != nil {
			return fmt.Errorf("failed to set current-context to new name: %w", err)
		}
	}
	if err := kc.Save(); err != nil {
		return fmt.Errorf("failed to save modified kubeconfig: %w", err)
	}
	_ = printer.Success(stderr, "Context %s renamed to %s.",
		printer.SuccessColor.Sprint(op.Old),
		printer.SuccessColor.Sprint(op.New))
	return nil
}

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Check the contexts sequence in the kubeconfig for malformed entries
2. As a workaround, manually edit the context name in ~/.kube/config or use kubectl config to recreate the context under the new name
3. Report the issue with the kubeconfig contents (redacted) if the YAML appears valid

When it happens

Trigger: Thrown at cmd/kubectx/rename.go:83 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/2e984d69841ae9a5. Report an issue: GitHub.