processIOReadBytesMD              = NewCounterMD(processIOReadBytes, "Total bytes read by the process from the underlying storage system, /proc/[pid]/io read_bytes")

// such as, ":9000", "localhost:9000", "http://localhost:9000/"
func extractHostPort(hostAddr string) (string, string, error) {
	var addr, scheme string

	if hostAddr == "" {
		return "", "", errors.New("unable to process empty address")
	}

	// Simplify the work of url.Parse() and always send a url with
	if !strings.HasPrefix(hostAddr, "http://") && !strings.HasPrefix(hostAddr, "https://") {
		hostAddr = "//" + hostAddr
	}

	return r < '0' || r > '9'
}

func (p *PodNetnsProcFinder) FindNetnsForPods(pods map[types.UID]*corev1.Pod) (PodToNetns, error) {
	/*
		for each process, find its netns inode,
		if we already seen the inode, skip it
		if we haven't seen the inode, check the process cgroup and see if we
		can extract a pod uid from it.
		if we can, open the netns, and save a map of uid->netns-fd
	*/

	podUIDNetns := make(PodToNetns)

	StatelessHandler struct {
		Handle StatelessHandlerFn
		// OutCapacity is the output capacity on the caller.
		// If <= 0 capacity will be 1.
		OutCapacity int
	}

	// StreamHandlerFn must process a request with an optional initial payload.
	// It must keep consuming from 'in' until it returns.
	// 'in' and 'out' are independent.
	// The handler should never close out.

		Type:      gaugeMetric,
	}
}

func getMinioFDLimitMD() MetricDescription {
	return MetricDescription{
		Namespace: nodeMetricNamespace,
		Subsystem: fileDescriptorSubsystem,
		Name:      limitTotal,
		Help:      "Limit on total number of open file descriptors for the MinIO Server process",
		Type:      gaugeMetric,
	}
}

	if err := s.rescanPod(pod); err != nil {
		log.Errorf("error scanning proc: error was %s", err)
		return nil, err
	}
	// try again. we can still get here if the pod is in the process of being created.
	// in this case the CNI will be invoked soon and provide us with the netns.
	openNetns = s.currentPodSnapshot.Get(string(pod.UID))
	if openNetns == nil {

		"--set-xmark", inpodTproxyMark)

	// Handle healthcheck probes from the host node. In the host netns, before the packet enters the pod, we SNAT
	// the healthcheck packet to a fixed IP if the packet is coming from a node-local process with a socket.
	//
	// We do this so we can exempt this traffic from ztunnel capture/proxy - otherwise both kube-proxy (legit)

	info := madmin.GetOSInfo(context.Background(), globalLocalNodeName)
	return madminOSInfo.NewJSONWith(&info), nil
}

// GetProcInfoHandler - returns this MinIO process information.
func (s *peerRESTServer) GetProcInfoHandler(_ *grid.MSS) (*grid.JSON[madmin.ProcInfo], *grid.RemoteErr) {
	info := madmin.GetProcInfo(context.Background(), globalLocalNodeName)

	values.Set(peerRESTDepID, opts.depID)
	v, err := getMetricsRPC.Call(ctx, client.gridConn(), grid.NewURLValuesWith(values))
	return v.ValueOrZero(), err
}

// GetProcInfo - fetch MinIO process information for a remote node.
func (client *peerRESTClient) GetProcInfo(ctx context.Context) (info madmin.ProcInfo, err error) {
	resp, err := getProcInfoRPC.Call(ctx, client.gridConn(), grid.NewMSS())

	switch atomic.LoadInt32(&c.connected) {
	case closed:
		// client closed, this is usually a manual process
		// so return a local error as client is closed
		return nil, &NetworkError{Err: ErrClientClosed}
	case offline:
		// client offline, return last error captured.
		return nil, &NetworkError{Err: c.LastError()}
	}