func MakeUserNsManager(kl userNsPodsManager) (*UsernsManager, error) {
	kubeletMappingID, kubeletMappingLen, err := kl.GetKubeletMappings()
	if err != nil {
		return nil, err
	}

	if kubeletMappingID%userNsLength != 0 {
		return nil, fmt.Errorf("kubelet user assigned ID %v is not a multiple of %v", kubeletMappingID, userNsLength)
	}
	if kubeletMappingID < userNsLength {
		// We don't allow to map 0, as security is circumvented.