ahmetb/kubectx · error

failed to save modified kubeconfig file: %w

Error message

failed to save modified kubeconfig file: %w

What it means

Wrapper error in deleteContext: kc.Save() failed to write the modified kubeconfig back to disk (permission denied, read-only file, disk error). The context was removed in memory but persistence failed, so the on-disk kubeconfig may be unchanged.

Source

Thrown at cmd/kubectx/delete.go:86

			return deleteName, false, errors.New("can't use '.' as the no active context is set")
		}
		wasActiveContext = true
		name = cur
	}

	exists, err := kc.ContextExists(name)
	if err != nil {
		return name, false, fmt.Errorf("failed to check context: %w", err)
	}
	if !exists {
		return name, false, errors.New("context does not exist")
	}

	if err := kc.DeleteContextEntry(name); err != nil {
		return name, false, fmt.Errorf("failed to modify yaml doc: %w", err)
	}
	if err := kc.Save(); err != nil {
		return name, wasActiveContext, fmt.Errorf("failed to save modified kubeconfig file: %w", err)
	}
	return name, wasActiveContext, nil
}

View on GitHub (pinned to 12ad6fb22e)

Solutions

1. Check write permissions on the kubeconfig file
2. Verify the file is not opened read-only or on a full disk
3. Retry the delete after restoring write access

When it happens

Trigger: Thrown at cmd/kubectx/delete.go:86 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/f7866440405fd8ec. Report an issue: GitHub.