featureSpec, ok := (*f)[k]
		if !ok {
			return nil, errors.Errorf("unrecognized feature-gate key: %s", k)
		}

		if featureSpec.PreRelease == featuregate.Deprecated {
			klog.Warningf("Setting deprecated feature gate %s=%s. It will be removed in a future release.", k, v)
		}

		boolValue, err := strconv.ParseBool(v)
		if err != nil {

				return nil, err
			}
			continue
		}

		// If the group is neither a kubeadm core type or of a supported component config group, we dump a warning about it being ignored
		if !componentconfigs.Scheme.IsGroupRegistered(gvk.Group) {
			klog.Warningf("[config] WARNING: Ignored YAML document with GroupVersionKind %v\n", gvk)
		}
	}

			v.Err = appendError(v.Err, t.Err)
			v.Warning = appendError(v.Warning, t.Warning)
		default:
			v.Err = appendError(v.Err, t)
		}
	}
	return v
}

// AppendWarningf appends a formatted warning string
// nolint: unparam
func AppendWarningf(v Validation, format string, a ...any) Validation {
	return AppendValidation(v, Warningf(format, a...))
}

			if isValidAuthzMode(requested) {
				mode = append(mode, requested)
			} else {
				klog.Warningf("ignoring unknown kube-apiserver authorization-mode %q", requested)
			}
		}

		// only return the user provided mode if at least one was valid
		if len(mode) > 0 {
			if !compareAuthzModes(defaultMode, mode) {
				klog.Warningf("the default kube-apiserver authorization-mode is %q; using %q",
					strings.Join(defaultMode, ","),

		return
	}

	if r.svcQueue.NumRequeues(key) < maxRetries {
		klog.V(2).InfoS("Error syncing Service, retrying", "service", key, "err", err)
		r.svcQueue.AddRateLimited(key)
		return
	}

	klog.Warningf("Dropping Service %q out of the queue: %v", key, err)
	r.svcQueue.Forget(key)
	runtime.HandleError(err)
}

		if !ok {
			return nil, policyLoadError{path, i, b, fmt.Errorf("unrecognized object: %#v", decodedObj)}
		}
		pl = append(pl, decodedPolicy)
	}

	if unversionedLines > 0 {
		klog.Warningf("Policy file %s contained unversioned rules. See docs/admin/authorization.md#abac-mode for ABAC file format details.", path)
	}

	if err := scanner.Err(); err != nil {
		return nil, policyLoadError{path, -1, nil, err}

	if quit {
		return false
	}
	defer c.queue.Done(key)

	// log slow aggregations
	start := time.Now()
	defer func() {
		elapsed := time.Since(start)
		if elapsed > time.Second {
			klog.Warningf("slow openapi aggregation of %q: %s", key, elapsed)
		}
	}()

	err := c.syncFn(key)
	if err == nil {
		c.queue.Forget(key)
		return true
	}

// and validates that the cert is a CA. Failure to load the key produces a warning.
func validateCACertAndKey(l certKeyLocation) error {
	if err := validateCACert(l); err != nil {
		return err
	}

	_, err := pkiutil.TryLoadKeyFromDisk(l.pkiDir, l.caBaseName)
	if err != nil {
		klog.Warningf("assuming external key for %s: %v", l.uxName, err)
	}
	return nil
}

// detach it from block device.
func (v VolumePathHandler) DetachFileDevice(path string) error {
	loopPath, err := v.GetLoopDevice(path)
	if err != nil {
		if err.Error() == ErrDeviceNotFound {
			klog.Warningf("couldn't find loopback device which takes file descriptor lock. Skip detaching device. device path: %q", path)
		} else {
			return fmt.Errorf("GetLoopDevice failed for path %s: %v", path, err)
		}
	} else {

func getIndexValue(r *http.Request, field string) string {
	opts := metainternalversion.ListOptions{}
	if err := scheme.ParameterCodec.DecodeParameters(r.URL.Query(), metav1.SchemeGroupVersion, &opts); err != nil {
		klog.Warningf("Couldn't parse list options for %v: %v", r.URL.Query(), err)
		return unsetValue
	}
	if opts.FieldSelector == nil {
		return unsetValue
	}
	if value, ok := opts.FieldSelector.RequiresExactMatch(field); ok {